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Geographic Information Systems : Recent Questions and Answers (Page 32)

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

Automatically converting GeoPackages to ZIP archives with Shapefiles and QML/SLD with native QGIS

Currently we use a third party tool (mygeodata website) to convert our geopackage back to a zip folder with all the contents of the geopackage and the styles intact (even...

Asked on 11/01/2021

0 answer

Unable to replicate GDAL output

I have a set of GRIB files that are fliped (longitude spans from 0 to 365), and I am using gdal to first transform the data to GeoTIFF, and then...

Asked on 11/01/2021

1 answer

Overpass Query to find ways of a route geometry

Problem I have a route geometry in the format:OSM node-1 coordinatesOSM node-2 coordinatesOSM node-3 coordinates...And I need to know which OSM ways were "used" by the route. Question Is there...

Asked on 11/01/2021

1 answer

TauDEM: Missing cell area contribution

I have a terrain, that looks like the below: The geotiff file can be found here I...

Asked on 11/01/2021

0 answer

Missing Styles when loading KML file into Openlayers created in Google Earth

I've been trying to display a KML file with Openlayers, which I created with Google Earth. It is a simple polygon with white outline and 50% alpha black filling. In...

Asked on 11/01/2021 by Kuga

2 answer

How to create a map to PNG file with specific box coordinates by Mapnik?

I recently manually built a tile server with this instruction ->https://switch2osm.org/serving-tiles/manually-building-a-tile-server-20-04-lts/.I downloaded location data for Russia from geofabrik.de and then loaded to database by osm2pgsql....

Asked on 11/01/2021 by Kaanr

1 answer

Problem with photo displaying in QGIS 3.10

I would like to know how to display a photo in a image viewer with a featured action.I create a layer with 3 fields: id, leyenda and filepath. Filepath...

Asked on 11/01/2021 by A.Badouk

1 answer

Remove a part of line features shapefile using a polygon shapefile in QGIS

I have a road network map which I need to cut off parts off using a polygon. Both road network and the polygon are shapefiles. What I need to do...

Asked on 11/01/2021

1 answer

Getting lat/long for centroids using QGIS

I have a series of polygons (lakes) in Kansas, Oklahoma and a few in Texas.I created centroids of each lake, which I need for distance measurements. These centroids have...

Asked on 11/01/2021

2 answer

Flip orientation of Font Markers on line when upside down using QGIS

I would like to have font markers flip when they are upside down but otherwise follow the line angle.Here is an image of how they look now: ...

Asked on 11/01/2021

1 answer

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