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Geographic Information Systems : Recent Questions and Answers (Page 517)

Find answers to your questions about Geographic Information Systems or help others by answering their Geographic Information Systems questions.

Weighted Voronoi polygons in R

I want to build weighted Voronoi diagram in R, as in How to draw weighted voronoi polygons (thiessen) from points in QGIS? or Create weighted Thiessen polygons?, but...

Asked on 11/28/2020 by Simone Bianchi

1 answer

Looping through two raster datasets and performing raster calculation on them with Arcpy

I have 2 raster datasets of temperature and precipitation from WorldClim. Is there any way to loop through 2 raster datasets at the same time and perform raster calculation on...

Asked on 11/28/2020 by coder_001

2 answer

GeoServer WMS Cascading how to define a custom parameter

I am attempting to configure our internal GeoServer to cascade an external WMS server. The external server has some custom properties which need to be passed when making a...

Asked on 11/28/2020 by Paul Kennedy

2 answer

Representing uneven tree canopy spread around point in QGIS

I am trying to make an attribute to show the uneven spread of the crown of a tree using the four cardinal points. I can use a buffer to show...

Asked on 11/27/2020 by Island Lescure

2 answer

Rainfall time-series to raster

I have a rainfall time series for 15 hours in increments of 0.250s, I need to convert it from a .txt-file to a raster. I've tried using r.mapcalc in GRASS,...

Asked on 11/27/2020 by Amrie Singh

1 answer

Add map parts to existing map

I have 4 scanned maps in geotiff format and need to create a single map using OkMap with the 4 geotiff files. How can I add adicional map files to...

Asked on 11/27/2020 by pmatos

1 answer

Polygon geometry suddenly disappeared/deleted from shapefile in QGIS

I was editing a polygon shapefile in QGIS (3.0.1) today when suddenly 966 out of 5382 polygons disappeared from the map. I had been changing attribute information in the table,...

Asked on 11/27/2020

2 answer

Moving multiple points using QGIS

I worked with a photo that is apparently a bit offset. Now I have more then 10,000 points with that offset. Now that I have the correct map I would...

Asked on 11/27/2020 by tristramit

2 answer

Reordering fields (permanently) in file geodatabase using ArcGIS Desktop?

Using ArcGIS 10.0, is it possible to reorder the fields in a file geodatabase, and have the order persisted to the database? We considered exporting to XML, and writing a...

Asked on 11/27/2020 by Stephen Lead

14 answer

NNJoin in QGIS does not return any distance

I have two layers, one with ~100,000 points, and another with ~20 polygons. I'm trying to find:a. which polygon a point belongs tob. the distance from the point...

Asked on 11/27/2020

0 answer

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