Questions tagged [open-source-gis]
Software for which the original source code is made freely available and may be redistributed with or without modification.
544 questions
0 votes
0 answers
27 views
Export from SAS Planet to OpenCPN
I would like to export an area map from SAS Planet to OpenCPN so I can view this are at a good zoom offline. I am very lost on how to do it. I tried exporting as tiles but OpenCPN won't show it. I saw ...
2 votes
1 answer
410 views
Python: Split Polygons where they overlap one another [closed]
I have a python script that produces a shapefile of polygons, created primarily using geopandas. I wish to split polygons where they overlap each other. Ideally removing all but one feature where ...
- 123
-2 votes
1 answer
51 views
Python code for extracting rastervalues at point locations [closed]
I want to write a python program for extracting rastervalues at point locations. The inputs are a CSV file with point locations having lat & long data and a raster(.tif) file. The raster is in ...
0 votes
2 answers
1k views
Create file geodatabase (.gdb) using free and open-source Python package
I am new to geospatial data analysis, and I would also use just free and open-source Python packages to work with. Now I try to create geodatabase (.gdb), but I can not find any appropriate Python ...
- 11
0 votes
1 answer
91 views
Digital Advisory Services for Rural Farmers using ML, GIS and RS [closed]
I am working on a GIS-based project to help with the delivery of advisory services to rural farmers. This project is demanding the use of Open-Data Cube and the SandBox environment. It is more like a ...
- 1
1 vote
0 answers
76 views
Open Source GIS Story Maps [duplicate]
I am helping to put together a session at a conference to see how we would want to design an OS Story Map 'Recipe' i.e. what is currently out there and how we could use it. The attendees will range ...
- 29
1 vote
1 answer
140 views
Atmospheric correction for Airbus imagery
I have purchased images from Airbus using sentinel hub and realized that they are TOA (top of atmosphere). I would like to apply atmospheric correction on the images. I have seen the FLAASH is very ...
- 2,099
1 vote
1 answer
248 views
Recreating ESRI projection/transformations in GDAL/OSR/OGR
How can I make sure that the coordinate transformations that I am applying using GDAL/OSR match transformations in ESRI/ArcGIS? Specifically the ArcPy geometry function, projectAs when taking in the ...
1 vote
0 answers
794 views
Distinction between "Clip" and "Intersection" tool in QGIS 3
For a project in marine biology we need to calculate the amount of seabed that is protected by official protected areas for each seabed habitat type. To that end, we clipped a seabed habitat layer ...
- 11
0 votes
1 answer
707 views
OpenGIS Tile data server for Cesium?
I'm investigating my options for local hosting test GIS data for use with Cesium front ends. I have seen this project: Cesium Terrain Server but it seems quite old. I thought I read somewhere that ...
- 173
4 votes
1 answer
1k views
Exporting multiple layers with different geometry types to one MapInfo TAB file in QGIS
It is no problem in QGIS to open MapInfo .tab files with combined geometry type. If a single .tab file contains points, polylines and polygons then QGIS will load three separate layers for each ...
- 398
0 votes
1 answer
87 views
PDF or HTML versions of Spatial Query Lab (FOSS4G Academy) lectures by Rick Smith
I am Spatial Science Teacher at TAFE NSW teaching Spatial Information Systems online. In 2019 our department started including links to many of the Spatial Query Lab SQL lectures in our resources. We ...
- 27
2 votes
1 answer
3k views
Extracting LAS/LAZ info in a performant way with PDAL?
I can do this: import json import subprocess as sp laz_file = somefile.laz r = (sp.run(['pdal', 'info', laz_file], stderr=sp.PIPE, stdout=sp.PIPE)) json_info = json.loads(r.stdout.decode()) and ...
- 1,627
-2 votes
1 answer
272 views
Seeking open source alternative to Spatial Analyst / 3D Analyst toolbox of ArcGIS Desktop
Is there a decent open source software alternative for the Spatial Analyst / 3D Analyst toolboxes of the ArcGIS environment? The main goal would be to demonstrate DEM interpolation and/or ...
- 1,196
0 votes
0 answers
186 views
How to get building elevation and levels
Is there any API or DataSet available to know the Building elevation and levels based on lat and long. I need data for North America(USA)
- 1