Geographic Information Systems Questions, Problems & Solutions : TransWikia.com ~ Page 479

Random sample of points to calculate K function on a large point set

For a point pattern analysis in R, I want to study a relatively large point dataset (about 1 million points) with a cross K function to compare different categories of...

Asked on 12/18/2020 by Strabonio

0 answer

FME - Get parts of lines within polygons and transfer polygon ID to lines in result

I've got a set of polygons (my investigation areas - identified by IDs) and a set of lines that intersect these polygons. My task is to only get the lines...

Asked on 12/18/2020 by Phil Gee

0 answer

Strange QGIS plugin behaviour if it runs for the first time

I have made a plugin that works fine in itself. Shortly said it fills a combobox based on a MS Access table. Then features in the map are shown that...

Asked on 12/18/2020 by SWP_IB

0 answer

Get altitude value from WMS

If I load a WMS service into QGIS I could query with the selection tool for every pixel the altitude value. Where does QGIS get this altitude value from? A...

Asked on 12/18/2020

1 answer

create a maximum raster using gdal_calc

I have an NDVI-Time series (24 tiffs from one year). What I would like to calculate is one single Raster with the Maximum NDVI-value for each pixel from all 24...

Asked on 12/17/2020 by user83420

2 answer

Finding the average of a raster across a given region, in R, for many points in time

I have a time-series of rasters (daily maps of global temperature for the past year), and a shape-file outlining state boundaries. I'd like to find the average temperature in each...

Asked on 12/17/2020 by K Kochanski

2 answer

How to split a polygon in 9 equal parts but I want to use different orientation on QGis?

I want to split a polygon of a terrain that I generated through coordinates on QGis. But at the same time, I want to do perform such an activity by...

Asked on 12/17/2020 by Giovani Almeida Camargo

0 answer

Extracting data from a raster

I'm working on a project where I must use the map: Corine land cover.https://land.copernicus.eu/pan-european/corine-land-cover/clc2018(You can download the map in the .tif format) I'm not familiar...

Asked on 12/17/2020 by ktop

3 answer

How to link SQL file with relative path in Processing Scripts

I wrote a processing tool, which exports some tables from PostGIS to package, and as part of the export, I am calling an external SQL file to add some triggers,...

Asked on 12/17/2020 by Nil

0 answer

Stop Leaflet event propagation?

I have a feature layer and some pins on it, with mouseout, mouseover events callbacks on the feature. When the mouse is over the pin icon, that triggers mouseout event...

Asked on 12/17/2020 by Muhammad

2 answer

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