Qgis Create Layer From Attribute Table

QGIS has a tool called Join Attributes that allows you to append the attributes from one table to the attributes in another table. In raster datasets, each row of an attribute table corresponds to a certain zone of cells having the same value. Open the Attribute table and start editing. Today, I am going to show you how to calculate length in QGIS. First you will need some data to map. The new cameras4 layer will appear in the QGIS Layers window. 1BestCsharp blog 5,903,861 views. Each row belongs to one polygon in the data. To see information about the polygons, such as who owns them and which province they are located in, open the data's attribute table. Add the attribute ‘bev2011′. 16 a new mode was added to the attribute table dialog for searching and filtering features. The only work around I was able to come up with within QGIS 3. shp data layer. Right click on the US Counties in the Layers Panel and select Open Attribute Table. So for roads, the layer we loaded in our basic map we will view its attributes. QGIS: https://qgis. The results from the plugin are outputted as an html page which can be easily shared in a folder or placed on the web for people to view. Open QGIS (minimum version 3. Sets the constraint expression for the specified field index. You will have updates to your Excel table, in the same way as if you had done them with Excel. In QGIS you can already do save selection as to save a layer from your selection, and now offers functionality that allows you to create a new file or memory layer from whatever is in your clipboard. Make the layer editable and click on the Field calculator. Implements a processing algorithm to calculate the pole of inaccessibility for a surface, which is the most distant. Click on the + button at the bottom to create a new table join. Viewing Data Attributes¶ In QGIS you can easily view data attributes by either selecting the feature within the layer of interest or opening the full table. Strengths / weaknesses: QGIS is simple, free, open-source software; Open the georeferenced image (Layer > Add Raster Layer) or WMS layer (Layer > Add WMS Layer) in QGIS. Create a new field in the attribute table and use the Field Calculator to create an expression We also want to restrict to areas that have been zoned for residential use. The CSV will now be imported as a table to QGIS. Essentially the plugin allows you to turn a numerical attribute as a "height" for your data. Operations in attribute tables are executed in: the Field Calculation Bar, located immediately below the toolbar of the attribute table or with the. Typically, one record in the attribute table corresponds to one feature in the GIS layer. In the Menu, select View ‣ Identify Features. You can import the xml file QGISstyles. This page shows you how to change an attribute data type in QGIS via Table Refactor Field Tool. This type of query resembles a more traditional relational database query and in fact uses SQL statements. QGIS 3 incorporates the buttons to create Shapefiles and Geopackages in the “Data Source Manager” bar. Raster data have to be imported into GRASS to be able to edit and export them into other formats. You will see a new set of fields, including the HD01_VD01 field containing population estimates. Once QGIS is launched, go to the Layer menu -> Add Layer-> Add Vector Layer. Add GB_SAC_20130918_Dissolved. Is there an easy way to add coordinates to an attribute table within a vector shape file using qgis? Thanks. QgsVectorLayer () Examples. Click on Layers ‣ Add Delimited Text Layer. data creation. To select our areas of interest, we will select the municipalities from the attribute table. Java Project Tutorial - Make Login and Register Form Step by Step Using NetBeans And MySQL Database - Duration: 3:43:32. All other selections should look like the following. GIS Exercises Lab 9: Buffering and Overlay 3 Part 1: Buffering in QGIS Create a new QGIS project and add the roads. How to get label dialog box. The location of a ~[⇑], such as a bore hole, can be described by a single x,y coordinate. csv file) users bring into QGIS can be accessed using the Open Attribute table function. Create a connection from QGIS to your PostGIS server and navigate to and expand the my_world schema in the Browser panel. I opened attributes table --> edit. Behind the scene¶ The idea QGIS-GRASS modules implementation is to use maximum informations from GMO and only simplify the interface. Viewing Data Attributes¶ In QGIS you can easily view data attributes by either selecting the feature within the layer of interest or opening the full table. The CSV will now be imported as a table to QGIS. How to export the Attribute Table as Excel file in Qgis Short video tutorial. However, in order for the data to be useful, you actually need to say something about the feature you create in this new Shapefile layer because this what you will use in Spotfire to match it with your data. To open the attribute table, you can either right-click at the layer and select “Open attribute table”, or click the open attribute table button in the toolbar (Figure 6). Add a new vector layer and create a project. A short overview of QGIS, pgAdmin and PosgtreSQL/PostGIS framework. In this example we will use it to display the “Western Cape”. Note: In this example I use ArcGIS Pro Desktop 2. 16 it is now easy to create a new GeoPackage as it has been integrated into the Layer toolbar and Layer -> Create Layermenu. Insert each of the shapefiles you would like to analyze. setAuxiliaryLayer. Now that we have our vlayer object we can do something with it - like opening its attribute table using the iface. Steps to Merge Vector Layers on QGIS 3. http://changelog. One difference between QGIS and ArcGIS is the layer related operations. Add a column to the attribute table of the center, to distinguish rows (e. Special highlights are support for rule based labelling, rule based styling of attribute tables, and advanced geometry checker, support for digitising curve based geometries, better authentication management and much, much more! QGIS 2. Open the Attribute Table of the newly created layar. In raster datasets, each row of an attribute table corresponds to a certain zone of cells having the same value. Select the tl_2013_06_tract layer. If you are using ANY OTHER encoding, create TWO tables: one for the LAT LONG import, and one to join the other character set attributes to the resulting points layer (see JOINS for details on how to accomplish the second JOIN process). So for roads, the layer we loaded in our basic map we will view its attributes. The goal of this workshop is to not only introduce you to Quantum GIS (QGIS), but to show you how it can integrate with other members of the open source GIS stack. Change log for the next release of QGIS 2. It allows selection of a folder which it will scan for jpg files which have been geotagged and creates a PointZ layer with the result, with attributes for photo path, altitude, direction and timestamp. Joins can be based on common attributes or common location (spatial join). You can do this simply by duplicating your. If you are aware of shapefiles and the corresponding file types in an explorer you may simple drag the shp-file to the layer table and that’s it. On the following example, I have a contour layer which has some attributes columns. This tutorial shows how to view the attributes of a GIS vector layer and do basic queries on them in QGIS. The results from the plugin are outputted as an html page which can be easily shared in a folder or placed on the web for people to view. Returns QGIS Server Properties of the vector layer. Create four points snapped to each of the polygon nodes that are circled in red in the second image below. csv file) users bring into QGIS can be accessed using the Open Attribute table function. Discover (and save!) your own Pins on Pinterest. csv file and click Open. In the Create a Layer from a Delimited Text File dialog, click on Browse and specify the path to the text file you downloaded. Press the right-click mouse button to tell QGIS to “split now”. To open the attribute table, you can either right-click the layer and select Open attribute table, or click. Users can change the viewing order of the layers, open the layer properties, and open the attribute table in this area. Once added it appears as an attribute table which I can go into the layer properties and select the correct CRS but it still doesn't appear correctly. Click on the + button at the bottom to create a new table join. csv”, which was previously viewed and treated on a spreadsheet software like EXCEL) as a delimited text layer, comma-separated value table: ‘. Enter data in the New table name field and check the box for Extract field names from first line. Hello! I've been searching google for a solution to my problem but I have yet to find any satisfactory answers. Then use these settings : - Set Maximum rows corresponding to your layer (Here at least 30) - Check Show only features intersecting atlas feature - Uncheck Show grid - Use google roboto fonts - Set fonts like this : - Appearance settings like this. Mapping GPS points with QGIS and adding attribute data 2. When opened, the. QGIS supports both raster and vector layers; vector data is stored as either point, line, or polygon features. We will open QGIS and create some lines we would like to show on our webmap:. - New message log window - Benchmark program - Row cache for attribute table - Legend independent drawing order - UUID generation widget for attribute table - Added support of editable views in SpatiaLite databases - Expression based widget in field calculator - Creation of event layers in analysis lib using linear referencing - Group selected. However, in order for the data to be useful, you actually need to say something about the feature you create in this new Shapefile layer because this what you will use in Spotfire to match it with your data. Go to Vector -> OpenStreetMap -> Export Topology to SpatiaLite… In the first field, select the database you created in the previous step. You can do selection by two ways. It will activate when you check box the select from the loaded layers. If you are using ANY OTHER encoding, create TWO tables: one for the LAT LONG import, and one to join the other character set attributes to the resulting points layer (see JOINS for details on how to accomplish the second JOIN process). Features in the table can be searched, selected, moved or even edited. So I have taken the task of preparing a step-by-step slideshow illustrating how to create a polygon layer inclusive of setting the map projection and updating its attribute table. Add GB_SAC_20130918_Dissolved. In a GIS, attribute tables are often joined or related to spatial data layers, and the attribute values they contain can be used to find, query, and symbolize features or raster cells. layer labeling in QGIS 3. Once QGIS is launched, go to the Layer menu -> Add Layer-> Add Vector Layer. Enter data in the New table name field and check the box for Extract field names from first line. Save your edits. Are you newbie QGIS 3. This is not a geometrical data; therefore, it is not shown in map area. Table joins have been on our wish list for quite a while. The CSV will now be imported as a table to QGIS. To understand what attributes are available to us to create an expression, let's open up the Attribute table and take a look at what's inside. In layer styling, this how to create geometry generators of your own. ) Open the attribute table of the roads layer and then Click on the field calculator. 5 (Map Source for the Garmin GPS) 2. So, First of all, accept my apology in advance if my question sounds stupid. csv file) users bring into QGIS can be accessed using the Open Attribute table function. Within each layer, there should be a corresponding attribute table, right click and select open attribute table. However, it is easy enough to create a color map from this file, which you can use in QGIS. On the following example, I have a contour layer which has some attributes columns. In this tutorial I will cover how to create an open action and a python action. By default, a new layer has only one attribute, the ID field. Selection of Features in QGIS 3. Once your layers have been downloaded in QGIS, you will notice on the bottom right that the data is projected in web mercator, or WGS 84 or EPSG:4326 (4326 is the EPSG identifier of WGS84 and WGS84 is the name for the standard coordinate frame for the Earth). all the A roads and motorways within Greater London). Click Create. Operations in attribute tables are executed in: the Field Calculation Bar, located immediately below the toolbar of the attribute table or with the. Click on the + button at the bottom to create a new table join. Right click on the data layer in the Layers Panel and select Open Attribute Table. It is possible to very quickly render any choropleth map you make in QGIS in 3D using the Qgis2threejs plugin. For example, we can merge two polyline layers, but we cannot merge point layer with polyline layer. In this Python QGIS tutorial we will explore more about how to work with vector layer like getting fields name, layer extent, getting feature, and many more. QGIS: Getting Started October 16, 2015 November 16, 2015 Elvira In this tutorial, we will learn some basics of using QGIS, including getting familiar with the QGIS interface, adding vector layers and manipulating attributes. Creating a Subset Shapefile from an Existing Shapefile This tip sheet covers how to create a smaller subset data set from a larger data set in ArcGIS. -Create bookmarks-Thematize and labeling-Drawing tools and editing tables-Final products. Load the data table downloaded from GBIF ("Madagascar_tan_database_2. Also, it is recommended only combine the tables or layers with the same CRS. Select Layer > New > New Shapefile Layer to create the new empty layer for your vector feature. Essentially the plugin allows you to turn a numerical attribute as a “height” for your data. 1 Topics Here are the topics we will cover: 1. Working with non spatial attribute tables¶. To open the attribute table for a vector layer, activate the layer by clicking on it in the Layers Panel. Optionally, each layer can (but does not have to) be linked to an attribute table. You can open the table in the same way as other tables in the spatial layers loaded in QGis. To do this, click on the desired row numbers consecutively, either holding down your "Ctrl" key for PCs or your apple key for Macs. You can investigate the other elements of the Layer Properties at your leisure. I have an attribute table with two empty fields in QGIS. setCoordinateSystem. Sets the attribute table configuration object. Once your layers have been downloaded in QGIS, you will notice on the bottom right that the data is projected in web mercator, or WGS 84 or EPSG:4326 (4326 is the EPSG identifier of WGS84 and WGS84 is the name for the standard coordinate frame for the Earth). Basically, I want to add a new field or column to the attribute table that contains length information of each features/lines in a layer. If you open the attribute table (right click data layer nyzd), youll notice that ZONEDIST gives information on zoning that is too specific for our purposes. Once we have completed the join, we can reopen the shapefile's attribute table. Sampling raster values at point locations in QGIS On February 15, 2010 July 1, 2014 By pvanb In Data handling , GIS , GIS software , QGIS Recently I received an excel file with the coordinates of 144 vegetation sample plots, with the request to get the altitude values for the plots. Manage Layers Bar - where users add shapefiles, raster layers, etc. So almost all algorithms from this provider will work “out of the box” without any additional configuration. Once added it appears as an attribute table which I can go into the layer properties and select the correct CRS but it still doesn't appear correctly. Select the tl_2013_06_tract layer. View common le-based data 3. Remember, every row is a single feature in the layer, and if you put the attribute table and the map side-by-side, you'll see that every time you select a row, a specific area of the map will be highlighted. The WHS for this. We need both network and node table. Standalone tables can be added via clicking on the Layer | Add Layer | Add Vector Layer menu. Joining attribute tables to other database tables allows you to use a spatial dataset in order to reference a dataset without any geometry, using a common key between the data tables. Insert each of the shapefiles you would like to analyze. Quantum GIS User Guide Quantum GIS (QGIS) is an improvements to the definition of attribute tables for newly created layers. The attribute table will now show the combined data for both layers:- QGIS attribute table This data can now be used to create a thematic map that colours each constituency according to party that won the seat in 2010. Video: “QGIS – Layer Properties – Rename fields of shapefile attribute table” Authoring 3D Layers and Creating Web Scenes in Arc. Import Coordinates Attributes from Excel/Spreadsheet/CSV To Google Earth. Returns QGIS Server Properties of the vector layer. Bug report #15599: In spatial views, QGIS shows only 100 rows in attribute-table, when view has more than 100 objects Bug report #15600 : Selecting features feature in spatial views and virtual layers leads to wrong results. Go to menu Layer → Add Delimited Text Layer or click the toolbar icon Add Delimited Text Layer to open the Create a Layer from a Delimited Text File dialog, and then select the file localities. 1? Previous answers on this topic do not help -perhaps because they relate to older versions of QGIS. QGIS Browser - where you can view the folders for your data. GPX) 6in QGIS : Vector GPS GPS Tools Load GPX file Select the file and the type of data to load (points, Tracks …) 3. Optionally the scan can be recursive and you can create an optional table of photos which could not be read or which were missing geotags. 1? Previous answers on this topic do not help -perhaps because they relate to older versions of QGIS. In the Create a Layer from a Delimited Text File dialog, click on Browse and specify the path to the text file you downloaded. We will need to know which column of the database tables includes the forest category information, so the first step is to open and inspect the attribute table. Choose File > Import > Table from CSV File from the menu. In order to have a label in google earth for the Points you need to fill the column name (of your attribute table in qgis) you want into the NameField in the save as menue from the layer within qgis. csv file and click Open. To add a WFS layer you need to go through a similar process as you do to add a WMS layer, that is, you must first add the WFS service by clicking on the tool on the Manage Layers Toolbar, then connect to the service, then select the layer you want to add. In the map composer go to the atlas tab and set your layer as atlas coverage layer. Click that. Also, any table (i. However, it is easy enough to create a color map from this file, which you can use in QGIS. This tutorial was created using QGIS 2. 0-Valmiera released on. Right click on the data layer in the Layers Panel and select Open Attribute Table. Basically, I want to add a new field or column to the attribute table that contains length information of each features/lines in a layer. Open attribute table in a dock window (QGIS restart required) Copy geometry in WKT representation from attribute table. Bring up the attribute table for our original layer (tl_2018_us_county), scroll to the right, and notice that all of the data from the CSV file has been added to our original attribute table. Open the Attribute table and start editing. Behind the scene¶ The idea QGIS-GRASS modules implementation is to use maximum informations from GMO and only simplify the interface. To add attributes to all selected features in a layer, click the layer name, click in the Value column, type the attribute value, then press Enter. Layer Properties- Attributes Form (Width) Cannot load GPX file automatically after creating it QGIS 3. That is confusing for non-spatial data. Click on the + button at the bottom to create a new table join. The Basics Tools: Add, Create and Edit Vector Layers. Hub layer name attribute: BUS_STOP_N. For example, you may have Point locations that you wish to update with a geographic location, based on the boundary each point falls within. •Actions: User defined layer actions, such as showing an image when a feature is clicked on. 1? Previous answers on this topic do not help -perhaps because they relate to older versions of QGIS. shp by right-clicking the shapefile within the Layers Panel and then selecting Open Attribute Table from the menu. x versions you can create a Shapefile layer by combining the Ctrl+Shift+N keys, in QGIS 3 version the same sequence allows you to create a Geopackage. Also sometimes, if I do just save as a new layer it will save every well (all ~12000) as the new layer. zip file containing the state polygon, car theft point file, and QGIS Layer Style File is can be downloaded here: car-files. QGIS is a great GIS application which supports a wide range of file types. The nearest neighbour distance is included in the attribute table of the output layer. The joined fields are displayed as a new view rather than actually added to the layer. To access the attribute table, select the hub. In order to have a label in google earth for the Points you need to fill the column name (of your attribute table in qgis) you want into the NameField in the save as menue from the layer within qgis. Work with attributes and actions 5. QGIS is a great GIS application which supports a wide range of file types. From attribute table to QGIS style file – step 1. View common le-based data 3. These plugins can also be installed directly from the QGIS Plugin Manager within the QGIS application. shp layer and Open Attribute Table. Currently QGIS imports CSV as UTF-8 Encoding. In your new QGIS Composer, select the New Map Item tool. We are interested in the population of each feature, so pop_max is the field we are looking for. •Joins: Add or remove table joins •Diagrams: Create charts or diagrams based on the the layer’s attributes. QGIS offers the following: Digitizing tools for OGR supported formats and GRASS vector layer; Create and edit shapefiles and GRASS vector. Today I thought I should write tutorial on adding X and Y coordinates from the excel file. Bring up the attribute table for our original layer (tl_2018_us_county), scroll to the right, and notice that all of the data from the CSV file has been added to our original attribute table. Joins can be based on common attributes or common location (spatial join). Right now, we have three layers, one showing the boundaries, one showing the provincial centers and provincial. Create, edit, manage and export data¶ You can create, edit, manage and export vector maps in several formats. Choose File-> Print -> then in the printer choice pick Adobe PDf or Distiller, depending on the version you have. I'm trying to create a global map grouping countries by some criteria, in QGIS, I download one template with all countries, and I'm trying to update this dataset. Select Layer By Attribute Example 2 (Stand-alone Script) The following stand-alone script shows how to use the SelectLayerByAttributes function in a workflow to extract features to a new feature class based on location and an attribute query. We are interested in the population of each feature, so pop_max is the field we are looking for. The tables can be used for field lookups or just generally browsed and edited using the table view. Then just use one of the conversion functions to create a new column that will hold the attribute value in numeric form. hide() on form open) and get QGIS to bind to that, then when you form exits you can change the value in the text box to the selected value in the combo box in order to let QGIS handle the saving of the attribute value\ back to the layer. The Excel table then appears in the list of layers. Select the geometry type 3. Table joins have been on our wish list for quite a while. A second issue I had when creating new bikeways data was when a bikeway didn’t exist and I couldn’t reclassify it. The additional attributes and their values are taken from a second vector layer, where features are joined by finding the closest features from each layer. The next step is to create the legend style file (qml file), linking the above created symbols to the mapping units. How do I create a new layer using a selection from an attribute table in QGIS 2. Sampling raster values at point locations in QGIS On February 15, 2010 July 1, 2014 By pvanb In Data handling , GIS , GIS software , QGIS Recently I received an excel file with the coordinates of 144 vegetation sample plots, with the request to get the altitude values for the plots. First, to see the data associated with the shapefile, you can right click on the layer and choose “Open Attribute Table. Raster data have to be imported into GRASS to be able to edit and export them into other formats. showAttributeTable function: iface. The GRASS plugin provides access to GRASS GIS (see GRASS-PROJECT Literature and Web References) databases and functionalities. Select the tl_2013_06_tract layer. Operations in attribute tables are executed in: the Field Calculation Bar, located immediately below the toolbar of the attribute table or with the. You can also right-click a layer and click Zoom to Layer zoom into the extent of only that layer. Creating new geometries from existing data into routes using QGIS Published: 27/10/2019 I have a number of roadlinks in which I have created routes from i. The cost attribute in my network table is called traveltime. Additionally you can create it very easily in the open source GIS QGIS aka Quantum GIS. > two are probably more complex, but there are some good Python libraries. Also, sets the attributes of the new layer based on the field name rather then the order in which it appears. This type of query resembles a more traditional relational database query and in fact uses SQL statements. Setup the coordinate system transformation for the layer. In QGIS, all layer related operations must be conducted after the target layer has been selected, such as feature identification, feature selection, and attribute table operations. Modification can be made in the attribute table: right click on the layer in the layer panel Open the Attribute Table. We can think about QGIS in terms of a geodatabase. You can also switch to edit mode, edit the table and save it. Enter data in the New table name field and check the box for Extract field names from first line. 1? Previous answers on this topic do not help -perhaps because they relate to older versions of QGIS. No worries when we are here, attributes is a data which store information about spatial data. Joining Two Existing Tables (Video: Join Tables) Start QGIS, and add the theme demographics. Setup the coordinate system transformation for the layer. Discover (and save!) your own Pins on Pinterest. setConstraintExpression. Right click your layer in the Table of Contents, TOC; Select “Properties” Select the “General Tab”. csv", which was previously viewed and treated on a spreadsheet software like EXCEL) as a delimited text layer, comma-separated value table: '. So for roads, the layer we loaded in our basic map we will view its attributes. In raster datasets, each row of an attribute table corresponds to a certain zone of cells having the same value. ) Calculate the length as above and click ok. setAuxiliaryLayer. QGIS Interface. There are two types of tables you can work with in QGIS, attribute tables, and standalone tables. In QGIS, all layer related operations must be conducted after the target layer has been selected, such as feature identification, feature selection, and attribute table operations. So, First of all, accept my apology in advance if my question sounds stupid. After all, it is much nicer to add a join than to go through the process of creating a new shapefile with joined attribute table using "Join by Attributes". Reprojecting the layer. In this example, I am going to calculate the length of every feature in a contour layer. Once QGIS is launched, go to the Layer menu -> Add Layer-> Add Vector Layer. Read Free For 30 Days. It only works with the older XLS-format, not with the newer XLSX format. QGIS Browser - where you can view the folders for your data. The simple search allows you to search for individual text or numbers that appear in the attributes table of the layer. Lastly, we will define layers that can be used in QGIS, customized according to our needs. This QGIS shows you how to do this with the Manage Layers toolbar. Instead, I would like to show how you can link photos to attributes within a layer and also leverage the photo EXIF data to create field-of-view (FOV) cones within QGIS 3. This is useful if you need to manage your storage space and also if you need to edit files that are otherwise read only. Once QGIS is launched, go to the Layer menu -> Add Layer-> Add Vector Layer. Joining attribute tables to other database tables allows you to use a spatial data set to reference a dataset without any geometry, using a common key between the data tables. Typically, one record in the attribute table corresponds to one feature in the GIS layer. We need both network and node table. Open up the attribute table (right click on layer name), enter editing mode and open up the field calculator. layer is in. The first step is to provide a path and name for the Shapefile. QGIS supports both raster and vector layers; vector data is stored as either point, line, or polygon features. Right-click on it and select Properties. 2- Load the spatial layer. In the right-pane, check the box "Atlas Generation" Step 4 Choose your coverage layer. Now we are ready to perform our query on these attributes. However, in order for the data to be useful, you actually need to say something about the feature you create in this new Shapefile layer because this what you will use in Spotfire to match it with your data. Also, any table (i. If you like to read about adding X and Y coordinates on the ArcGIS then I have written 5 ArcGIS Tips helps you to perform you daily job. Table Joins - A New Feature in QGIS 1. SUM — Adds the total value for the specified field. To create a new Shapefile layer, choose Create Layer ‣ New Shapefile Layer… from the Layer menu or select it from the Data Source Manager toolbar. If you are using ANY OTHER encoding, create TWO tables: one for the LAT LONG import, and one to join the other character set attributes to the resulting points layer (see JOINS for details on how to accomplish the second JOIN process). The same in Layer properties->Attributes, classification etc. Choose File-> Print -> then in the printer choice pick Adobe PDf or Distiller, depending on the version you have. In the attribute table the row headers are present, but the column headers are missing, thus the records are empty. When you start QGIS, the default units are degrees, and this means that QGIS will interpret any coordinate in your layer as specified in degrees. A second issue I had when creating new bikeways data was when a bikeway didn’t exist and I couldn’t reclassify it. Currently QGIS imports CSV as UTF-8 Encoding. We need to update the Z attribute of all four points. Create dataset/database/Attribute table for the Map I've already created one map with multiple vector layers How to join tabular data to a layer using the attribute table QGIS: Creating. 1 Topics Here are the topics we will cover: 1. View common le-based data 3. Modification can be made in the attribute table: right click on the layer in the layer panel Open the Attribute Table. Now, this is possible with QGis by using the "virtual layers". Now we are ready to perform our query on these attributes. 1? Previous answers on this topic do not help -perhaps because they relate to older versions of QGIS. Press the right-click mouse button to tell QGIS to “split now”. Chose the rasters to process and also chose a place to save the resulting layer. I already have an existing shapefile with 2 foot contour intervals, I'm trying to get 50 foot contours and, if I can make it work, 10 foot contours with different symbology than the 50 foot contours. Click Create. Layers - the area where your shapefiles, tables, etc are viewed. Then, from the main Layer menu, choose Open Attribute Table. In QGIS you can already do save selection as to save a layer from your selection, and now offers functionality that allows you to create a new file or memory layer from whatever is in your clipboard. A window will then prompt you to pick the format of the file being saved, choose ‘ESRI Shapefile’. Alternatively, create these attributes using image maps in Houdini (see Houdini: Creating Attributes with Image Maps from QGIS-Houdini Workflow 2). From attribute table to QGIS style file – step 2 On July 2, 2012 October 30, 2014 By pvanb In GIS , QGIS , R computing environment This post is a follow up on an earlier post where I described how to use a column with RGB values in an (attribute) table to create mapping symbols for QGIS. It only works with the older XLS-format, not with the newer XLSX format. This is useful if you need to manage your storage space and also if you need to edit files that are otherwise read only. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: