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Geographic Information Systems : Recent Questions and Answers (Page 539)

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

Managing large numbers of raster DEMs for QGIS

I have a large number of (say 9000) 2km x 2km raster DEMs in ASC file format that I am trying to manage, in order to use in QGIS. I've...

Asked on 10/05/2020 by Tom Brennan

1 answer

Numpy array to raster in python / GDAL

I have raw .dat file which i need to convert to a raster.I am currently using numpy to read the filedata = np.fromfile('gsmap_gauge_now.20200805.0400.dat',dtype = np.float32)The coverage of this...

Asked on 10/04/2020 by Arjun Debnath

0 answer

ImportError: DLL load failed after QGIS Upgrade from 3.14.1 to 3.14.16

I have upgrade my QGIS from 3.14.1 to 3.14.16 and I get this error on startup.Traceback (most recent call last): File "", line 1, in File...

Asked on 10/04/2020

1 answer

The following layers were not correctly generated. Grid

I keep getting the same error: The following layers were not correctly generated.GridYou can check the log messages to find more information about the execution of...

Asked on 10/04/2020 by Loïc Poncin

1 answer

Exporting xy-coordinates from geodata

I want to get real line segment dataset to do an experiment. So I searched it, and found the site that includes the real data: http://www.wsdot.wa.gov/mapsdata/geodatacatalog/ From...

Asked on 10/03/2020 by NoSyu

1 answer

qgis2web other inline labels and popup preview not working

I have a map with different layers. Other pop-ups are already hidden so only those that I need is here However,...

Asked on 10/03/2020 by Cassie

0 answer

Download an Image Collection with a button using GeoJSON

I'm working on a GEE App where users can query for NDVI data of any country or given point, with an specific temporality. I also want the user to be...

Asked on 10/03/2020 by Alejandra Miranda

0 answer

Slope tool gives wrong degree values

I am trying to create a slope map in ArcMap out of a DEM.I used the Slope Tool (Spatial Analyst), selected my DEM as input and degrees as an...

Asked on 10/03/2020 by Georgios Alevizos

2 answer

PGRouting Error Missing table?

I am trying to use pgrouting to find the shortest path in GeoServer. So I created new layer in sql view but its giving me error. I created 3 table...

Asked on 10/03/2020 by sachin manandhar

1 answer

QGIS - From a point along a line (centreline), find the longest line to the centreline, without crossing a polygon boundary

https://onedrive.live.com/embed?cid=AEC7953479B58DC0&resid=AEC7953479B58DC0%218329&authkey=AKHlm_SovPNQOYw I have a series of points (ObservationPoints.shp) along a line (Centreline.shp). I am looking to find the longest line from these ObservationPoints to the Centreline without...

Asked on 10/03/2020

2 answer

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