Geographic Information Systems Questions, Problems & Solutions : TransWikia.com ~ Page 6

Changing hard coded variable value to user input in Python script with ArcPy

I have exported "Con Tool" script from ModelBuilder. The model has two input parameters one is the DEM and the second is "Long Variable". When I run the model it...

Asked on 12/25/2021

1 answer

How to tile Mars themis raster for Cesium

I am trying to tile the Mars themis raster that has the following crs:PROJCS["SimpleCylindrical Mars", GEOGCS["GCS_Mars", ...

Asked on 12/25/2021

0 answer

GeoTIF becomes super large by joining two grid bands (geotiff)

I have two raster tapes (GeoTIFs) that I want to merge into one GeoTIF with two bands. I used this command in the shell: gdal_merge.py -separate -o myoutput.tif *.cropped.tif, which...

Asked on 12/25/2021

1 answer

Using Photo points to "geotag" old images in QGIS

I have a bunch of old aerial images(in jpg format), however they do not contain any coordinates.I have a shape file which has the coordinates of the images and...

Asked on 12/25/2021

1 answer

"Optimized" TIFF file render slower than big original in GeoServer?

I struggle to "optimize" my rasters for publication on GeoServer.My original raw GeoTIFF raster render before my "optimized" and I don't understand why? The original file is at 18GB,...

Asked on 12/25/2021

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 12/23/2021

1 answer

Error message when running sDNA license manager, Windows 10

I want to install sDNA for QGIS (Windows 10, QGIS 3) and when I try to run the license manager, I get this error message (I'm running both as admin)...

Asked on 12/23/2021

1 answer

QGIS - processing area and calculating volume of polygon with know elevation from a DEM

I got a DEM of a watershed and I need to create a dam at a fixed elevation (with a rectangular polygon corresponding at the top of the dam) and...

Asked on 12/23/2021

1 answer

Writing the table layer_styles in a Geopackage

I made a pyQGIS script to backup the PostGIS tables of my team. I needed to save each table style in the Gpkg's layer_styles. Here's an extract of how I've...

Asked on 12/23/2021

1 answer

Why a range in area for catchments even if stream definition is set at a single size?

Using ArcHydro, I set stream definition at 5000, 20x20 cells (approx. 50 acres). I placed points at origins of each subsequent stream with batch point generation tool. Then used...

Asked on 12/21/2021

1 answer

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