opentopodata
BlenderGIS
opentopodata | BlenderGIS | |
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3 | 60 | |
297 | 7,230 | |
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6.9 | 4.3 | |
2 months ago | 4 months ago | |
Python | Python | |
MIT License | GNU General Public License v3.0 only |
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opentopodata
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I built an alternative to the Google Elevation API using open data
You can self-host an API serving open data (I also develop https://github.com/ajnisbet/opentopodata/ which helps you do this) but elevation data comes in different formats and quality levels which are non-trivial to merge without artefacts, and the datasets are too large for a typical cloud workflow.
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Show HN: An alternative to the Google Elevation API using open data
Hi HN!
GPXZ ([https://www.gpxz.io/](https://www.gpxz.io/)) is an API for elevation point queries. These APIs are used for things like flight planning, flood analysis, elevation profile visualisation, and weather forecast localisation.
Google Maps is the name brand elevation API but it's expensive, you are restricted in how you use the data, they decrease accuracy for batch queries, and their dataset is being left behind by all the amazing open data sources released in the last few years.
You can self-host an API serving open data (I also develop [https://github.com/ajnisbet/opentopodata/](https://github.co... which helps you do this) but elevation data comes in different formats and quality levels which are non-trivial to merge without artefacts, and the datasets are too large for a typical cloud workflow.
So I built the 12 TB GPXZ dataset, which carefully merges open lidar and satellite sources covering the whole globe. The idea is that with a single dataset you can get the best-possible data in your area of interest.
The [gpxz.io](http://gpxz.io) API runs on a boring stack: nginx, uwsgi and python on dedicated servers. Everything is in a django monolith, except the API which I recently liberated from the monolith into a standalone flask service. I have a few freelance customers who are paying me for data processing and managed opentopodata hosting that have been extremely helpful in validating this idea.
I know this is a niche service compared to most Show HNs, happy to answer any questions about elevation data or geospatial APIs!
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Ask HN: Do you use an elevation API?
Cool, I learned about abstreet the other day from HN! Thanks for the feedback.
These days I run everything geospatial in docker containers, the dependencies in geo are tricky.
Interesting about the memory/caching issues. I was going to suggest rasterio which I use for batch queries in https://github.com/ajnisbet/opentopodata and comes bundled with its own gdal binary, but looks like you're already using that.
I've also used zarr+tifffile for geotiffs in particular, it's faster and avoids a lot of gdal's warts, but you still need something like rasterio to read the geospatial metadata and handle projections.
BlenderGIS
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NumPy issues
I'm running Linux. I've already tried to run sudo apt -y install python3-numpy as suggested here and tried to install numpy using blender's python console and import pip pip.main.... it's saying everything is installed, but I still cannot enable addon either run import numpy in console. Please ask me if you need more technical details.
- 3D topographic map with Blender and GIS
- Need help making a terrain based on a country.
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Modern City Mapmaking on Mac?
There's a GIS addon for the 3D suite Blender: https://github.com/domlysz/BlenderGIS It let's you import parts of Google maps and you may import buildings, roads, etc. as well.
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QGIS to/from CAD (architectural, 3D) workflow
In Blender, add the plugin "Blender GIS", which will give you an easy way to bring in terrain, aerial photos, etc. Import your DAE into Blender and have a look at "Import units" when importing. I still think you'll need to move the DAE model once it's in Blender to get it to match the terrain.
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Large Forested Landscape (mapping trees based on raster/ real site conditions)
- Downloaded BlenderGIS (https://github.com/domlysz/BlenderGIS) which allows the import of georeferenced elevation data (geo TIF file). I also tried to import individual tree points with no luck.
- How To 3D Print ANY City - Even Your Own! A Complete And Updated Guide For 2023
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Error when adding DEM as a displacement texture
I am trying to create a 3D relief on my geoTIFF map created in ArcGis. In Blender I am using a BlenderGIS plugin (https://github.com/domlysz/BlenderGIS)
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CADmapper equivalent for Europe
You might try blendergis it’s free and it just might do what you need
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Yosemite National Park - Render
I used Blender GIS to import real height data from Yosemite Valley. Unfortunately, the mesh did not have enough detail and was low resolution. Thus I've used it as a base mesh and sculpted most of the detail using rock brushes.