on December 28, 2022
Creating vector file using QGIS
Geographic Information SystemsHow do I vectorize an image in QGIS? Click on Raster ‣ Conversion ‣ Polygonize (Raster to Vector). The tool dialog will appear. Change the field name (describing the values of the raster) to suitable . Save the shapefile under exercise_data/residential_development as all_terrain. How do I create a vector polygon in QGIS? Quote from video:
on December 28, 2022
‘NoneType’ object has no attribute
Geographic Information SystemsHow do I fix NoneType has no attribute? The Python “AttributeError: ‘NoneType’ object has no attribute ‘get’” occurs when we try to call the get() method on a None value, e.g. assignment from function that doesn’t return anything. To solve the error, make sure to only call get() on dict objects. Here is an example
on December 28, 2022
Importing raster files in GeoPackage
Geographic Information SystemsHow do I add raster to GeoPackage? To save a raster, right-click on the raster layer and go to Export | Save As….Merge your series of rasters before saving them to a GeoPackage. Change the Output mode to Rendered image. Change the Format to GeoPackage and then set a File Name and Location for the
on December 28, 2022
How to display Google Maps as basemap in a Silverlight application?
Geographic Information SystemsHow do I integrate Google Maps into an app? Let’s see how to create a new project and integrate Google Maps. Install the Google Play Services SDK. Add Google Play services to Android Studio. Create a new Google Maps project. Get a Google Maps API key. Check your code. The XML layout file. The maps
on December 28, 2022
Display Map Tips in QGIS
Geographic Information SystemsHow do I show map tips in QGIS? You need to click on the map tips button or goto View->Map Tips in the menus. How do I enable map tip? MapTips will only work in data view. Right-click the layer for which you want to display MapTips in the table of contents and click Properties.
on December 28, 2022
Analyze Datasets (Data Management) – what is the output?
Geographic Information SystemsHow do you analyze a data set? 6 Steps to Analyze a Dataset Clean Up Your Data. Identify the Right Questions. Break Down the Data Into Segments. Visualize the Data. Use the Data to Answer Your Questions. Supplement with Qualitative Data. How do you analyze large amounts of data? For large datasets, analyze continuous
on December 28, 2022
ArcMap 10.3 Mosaic to New Raster produce a single color output
Geographic Information SystemsHow do I convert Mosaic to New raster? Open the Mosaic To New Raster tool by navigating to ArcToolbox > Data Management Tools > Raster > Raster Dataset. Insert the raster files. Select the output location. Specify a name and extension for the output. Specify the pixel type. Specify the number of bands. What
on December 28, 2022
Removing polygon sliver other than by using graphic-to-feature
Geographic Information SystemsHow do I remove a sliver polygon in ArcGIS? You can inspect the selected polygons to see if they are slivers, then either use the Editor > Merge command or the Eliminate geoprocessing tool (requires an ArcGIS for Desktop Advanced license) to merge the slivers with neighboring polygons. How do you cut a polygon out
on December 27, 2022
How to visualise generic geometry column from SpatiaLite database in QGIS
Geographic Information SystemsHow do I add a geometry column in Postgis? To add a column to an existing table, use the ALTER TABLE DDL, e.g.: ALTER TABLE my_table ADD COLUMN the_geom_mercator geometry(Geometry,3857); How do I view data in Qgis? It’s available as: a Data Source Manager tab, enabled pressing the Open Data Source Manager button ( Ctrl+L
on December 27, 2022
Setting transparency of feature class in ModelBuilder in ArcMap?
Geographic Information SystemsHow do I make a feature transparent in ArcMap? Click Customize > Toolbars > Effects on the main menu. The Effects toolbar appears. Click the layer drop-down arrow and select the layer that you want to appear transparent. and drag the slider bar to adjust the transparency. How do you change the transparency color in