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Geographic Information Systems : Recent Questions and Answers (Page 15)

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

Storing elevation for hiking paths as polylines

I need to store the z value for hiking paths. I have the GPS coordinates (points) and the tracks (polylines). I know I can store elevation data easily with the...

Asked on 12/03/2021

1 answer

How to import from E00 Interchange File with ArcGIS 10.8?

I have a dataset in old ArcInfo E00 Interchange format. In the past I could extract the data from this by using the "Import From Interchange File" tool in...

Asked on 12/03/2021

1 answer

JTS Geometry "Contains" not detecting point of an Inner polygon on edge of Outer Polygon

I was wondering if a JTS expert would be able to explain how to detect the below intersection of an inner polygon inside an outer polygon. I would have thought...

Asked on 12/03/2021

2 answer

WFS GetFeature request failing with srsName

I have a WFS 2.0 GetFeature request that works when I query a point layer but when I use essentially the same request on a line layer it throws the...

Asked on 12/01/2021

0 answer

PyQGIS 3 - Add New Layer to Spatialite Database

For the most part, working with QGIS layers has been a pleasure, but I've run into some difficulties recently when trying to create a new vector layer in the SQLite...

Asked on 12/01/2021

1 answer

Properties of Google Earth Engine GeoTIFF export

I am adding a couple of properties to an export, named 'elev' and 'threshold'. My objective is to have those properties embebed in the exported GeoTIFF, however, when I open...

Asked on 12/01/2021

2 answer

How to use a .tpk or GeoTiff file as a Google Maps Overlay

I am building a webapp using Google Maps, and want to have an image overlaid on top of the usual Map that represents Light Pollution data. I don't have ArcGIS...

Asked on 12/01/2021

1 answer

Create Point based on location of minimum elevation inside a polygon in QGIS3

For QGIS3.0: Using DEMs, I am drawing polygons around depressions. Inside that polygon, I need to generate not only the minimum elevation value but the location that value was extracted...

Asked on 12/01/2021

1 answer

Silently installing v-late ArcMap extension

Is there a way to install the v-late ArcMap extension silently? I'm also looking to deploy linkage mapper. https://www.arcgis.com/home/item.html?id=69963ab422d04e649b64ac11cbadafed https://circuitscape.org/linkagemapper/ I'm not sure how...

Asked on 12/01/2021

0 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 12/01/2021

2 answer

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