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Geographic Information Systems : Recent Questions and Answers (Page 42)

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

Symbolizing 3d polyline by z-value using ArcMap

I have a polyline with z-values. I need to symbolize the polyline by z-value. There doesn't appear to be any way to do this. How can I do...

Asked on 10/03/2021

1 answer

Same confusion matrix depiste hyperparameter tuning using TrainImageClassifier in OTB

I am trying to run a land use land cover classification using TrainImageClassifier in OTB. Here are the settings I used :...

Asked on 10/03/2021

1 answer

Retaining polygon feature attributes in points randomly generated within using QGIS

How do I retain polygon feature attributes in random points generated within these polygons using QGIS? Like Generating random points inside polygons that capture values from multiple attribute...

Asked on 10/03/2021 by mbela

1 answer

Extract time series from ImageCollection for multiple points - Google Earth Engine

I have the Sentinel 2 (COPERNICUS/S2) ImageCollection and a FeatureCollection of points. I want to extract a time series for each of the points from the band information in the...

Asked on 10/03/2021 by John L. Godlee

1 answer

Seed generate missing tiles for extra raster files in ImageMosaic using GeoServer

I would like GeoServer (via GeoWebCache) to update/generate tiles whenever a new raster file is added to a ImageMosaic store. I am testing the following procedure (unfortunately is not working):Created...

Asked on 10/03/2021 by Joe_Carto

2 answer

Labels overlapping annotations in ArcMap 10.6

I came across this issue regarding labels overlapping annotations in ArcMap 10.6 (picture left) where they don't overlap in 10.5 (picture right)... What am I missing? I simply opened the...

Asked on 10/02/2021 by kiwi75

1 answer

Query a JOINED ArcGIS Online resultset (via an HTTP request)

In a related question, we determined that it's possible to query an ArcGIS Online FC via an HTTP request. (I'll refer to the feature class as FC1.) In addition...

Asked on 10/02/2021

1 answer

Create mosaic like Voronoi Diagram from disjoint polygons

The illustration below shows the problem: as in (a) I have a set of disjoint polygons, as geometries...

Asked on 10/02/2021 by Peter Krauss

5 answer

Extract pixel values of NetCDF and save them as CSV

I have some NetCDF files (sea level anomaly) and I can open them in Python, but how can I extract pixel values of a specific region (square shape) and save...

Asked on 10/02/2021 by Kourosh Shahryari

1 answer

GeoServer layer property inaccessible from OpenLayers

I have a PostGIS table linked to GeoServer and eventualy with OpenLayers in a web map app. Recently, I have created and populated a new column in the table (called...

Asked on 10/02/2021 by vagvaf

1 answer

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