Geographic Information Systems Questions, Problems & Solutions : TransWikia.com ~ Page 55

Calculated distance doesn't match Google Earth

I have a google earth route that measures 190.1km in Google Earth. I then pulled down the .kml file, extracted the points and measured them using Vincenty's formula (ellipsoid...

Asked on 09/25/2021 by Will Luce

2 answer

gdal.Open error: 'NoneType' object has no attribute 'GetRasterBand'

I am running a python script which calibrates a hydrologic model, this script uses gdal from Osgeo. Following is the command I am giving python:from osgeo import gdalinfile="G:ARORAvic_inputsrouting_filesnew_basinsutlej_beas_new_fraction.tif"ds =...

Asked on 09/25/2021

1 answer

Python equivalent of spatstat's spatial point process functions

Is there a free Python package (i.e. PySAL?) that implements the standard summary statistics for spatial point processes, e.g. the F, G, J, and K functions? I'm happy to use...

Asked on 09/06/2021 by stackoverflax

1 answer

Create tabs for the QGIS plugin interface using Qt Creator

Is it possible to create tabs for QGIS plugin using Qt Creator? (Something like the image I attached) I am trying to group the functionalities I developed for QGIS plugin...

Asked on 09/06/2021 by rui jiang

1 answer

Inserting attribute value in Print Composer into label based on spatial relationship

I have this print layout in QGIS print composer/atlas in which I only have one layer being shown: land parcels. I am interested in having a label that will show...

Asked on 09/06/2021

1 answer

Removing bridges and dams from DEM

Is there anyway to alter elevation of DEM where there are bridges and dams for the flood routing of the River? I have to calculate discharge of the River...

Asked on 09/05/2021 by Muntaha Urooj

1 answer

PostGIS Update parse error – invalid geometry

I’m trying to update geometry table using the following command but getparse error – invalid geometryHINT: “MULTIPOINT(“ <-- parse error at position 11 within geometry ...

Asked on 09/05/2021

1 answer

Changing min max of Stretched Raster with ArcPy?

I have two rasters r1 & r2: Maximum cell value of r1: 0.9 Maximum cell value of r2: 0.3 Minimum value for both is 0 I am using a color...

Asked on 09/05/2021 by Philip Srnck

1 answer

How to implement the 'contain' spatial join in Google Earth Engine?

How to select polygons which are contained in another polygon in Google Earth Engine? For example, in this case below, how to select only the red square completely within the...

Asked on 09/05/2021

1 answer

Adding custom layer to OSM data in switch2osm?

I'm new to switch2osm and I've created an OSM Tile Server with switch2osm on Ubuntu 16.04 LTS. It uses Apache, Mod_tile,...

Asked on 09/05/2021 by Mahdi Nazari

1 answer

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