Find answers to your questions about Geographic Information Systems or help others by answering their Geographic Information Systems questions.
I have an Oracle Enterprise geodatabase with many feature classes. I would like a SQL query to find all the polygon feature classes with only one record in its table....
Asked on 11/06/2020 by Mich
1 answerI am pretty new to geo data. I have a spark data frame and would like to spatially join it with a shapefile using PySpark. I know how to read...
Asked on 11/06/2020 by Tracy Yang
0 answerThe code is as follows@Input( 'coreMap' ) coreMap :CoreMapComponent vectorLayer : VectorLayer; modifyLayer : Modify; draw: Draw; vectorSource: VectorSource; style: Style; snap: Snap;...
Asked on 11/06/2020 by Munerz
1 answerI am going to generate isochrones using Iso-Area algorithm of QNEAT3 plugin. I have a CSV file including start point coordinates. I read this file as a layer in QGIS....
Asked on 11/05/2020 by Elham
0 answerI am working with MODIS EVI 250m file in NetCDF format and trying to get the stack of EVI layers.So, I do:# check nc-file for variables namesnc =...
Asked on 11/05/2020 by DI S
1 answerI am trying to convert a MapInfo tab file with ogr2ogr I did this:ogr2ogr -f "ESRI Shapefile" testing.shp TEST.tabAnd get this error;ERROR 3: Failed to parse field definition...
Asked on 11/05/2020
2 answerI am new in QGIS. Here is my problem : I have two layers of points. In these two layers, my points have different degrees or size : For...
Asked on 11/05/2020 by nicolax9777
1 answerI have a dataset in QGIS that I originally created in ArcMap. It has two fields for dates, let's call them 'date_from' and 'date_to'. Both of these fields contain only...
Asked on 11/04/2020 by Matt Houston
1 answerI have a polyline represented by LineString class. I need to add additional points in between its points at a distance, say d. So if P1 and P2 are first...
Asked on 11/04/2020
0 answerIf QgsVectorFileWriter constructor is directly used, the output is flushed when the reference is deleted. I'm trying to switch to QgsVectorFileWriter.create() because QGIS warns that the former is being...
Asked on 11/04/2020 by user159687
2 answerGet help from others!
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