godal alternatives and similar packages
Based on the "Geographic" category.
Alternatively, view godal alternatives based on common mentions on social networks and blogs.
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go-staticmaps
A go (golang) library and command line tool to render static map images using OpenStreetMap tiles. -
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simplefeatures
Simple Features is a pure Go Implementation of the OpenGIS Simple Feature Access Specification -
geoserver
geoserver is a Go library for manipulating a GeoServer instance via the GeoServer REST API. -
S2 geojson
Draw a polygon on the map or paste a geoJSON and explore how the s2.RegionCoverer covers it with S2 cells depending on the min and max levels -
Web-Mercator-Projection
A Go project to explore the math to calculate and present data in a map using the `Web Mercator Projection`
InfluxDB - Purpose built for real-time analytics at any scale.
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README
Golang bindings for GDAL
Goals
Godal aims at providing an idiomatic go wrapper around the GDAL library:
- Function calls return a result and an error. The result will be valid if no error was returned. The error message will contain the root cause of why the error happened.
- Calls between go and native libraries incur some overhead. As such godal does
not strictly expose GDAL's API, but groups often-used calls in a single cgo function
to reduce this overhead. For example, C code like
c++ hDS = GDALOpen(filename, GA_Readonly) if (hDS == NULL) exit(1); int sx = GDALGetRasterXSize(hDS); int sy = GDALGetRasterYSize(hDS); int nBands = GDALGetRasterCount(hDS); printf("dataset size: %dx%dx%d\n",sx,sy,nBands); for (int i=1; i<=nBands; i++) { hBand = GDALGetRasterBand(hDS,i); int ovrCount = GDALGetOverviewCount(hBand) for(int o=0; o<=ovrCount; o++) { GDALRasterBandH oBand = GDALGetOverview(hBand,o); int osx = GDALGetRasterBandXSize(oBand); int osy = GDALGetRasterBandYSize(oBand); printf("overview %d size: %dx%d\n",o,osx,osy); } }will be written asgo hDS,err := godal.Open(filename) if err!=nil { panic(err) } structure := hDS.Structure() fmt.Printf("dataset size: %dx%dx%d\n", structure.SizeX,structure.SizeY,structure.NBands) for _,band := range hDS.Bands() { for o,ovr := range band.Overviews() { bstruct := ovr.Structure() fmt.Printf("overview %d size: %dx%d\n",o,bstruct.SizeX,bstruct.SizeY) } } - Unfrequently used or non-default parameters are passed as options:
go ds,err := godal.Open(filename) //read-only ds,err := godal.Open(filename, Update()) //read-write - Godal exposes a VSI handler that can easily allow you to expose an
io.ReaderAt as a filename that can be
opened by GDAL. A handler for opening
gs://google cloud storage URIs is provided through https://github.com/airbusgeo/osio
Documentation
contains the API reference and example code to get you started. The
*_test.go files can also be used as reference.
Status
Godal is not feature complete. The raster side is nearing completion and should remain stable. The vector and spatial-referencing sides are far from complete, meaning that the API might evolve in backwards incompatible ways until essential functionality is covered.
Contributing
Contributions are welcome. Please read the [contribution guidelines](CONTRIBUTING.md) before submitting fixes or enhancements.
Installation
Godal requires a GDAL version greater than 3.0. Make sure the GDAL headers
are installed on the system used for compiling go+godal code. If using a GDAL
installation in a non standard location, you can set your PKG_CONFIG_PATH
environment variable, e.g. export PKG_CONFIG_PATH=/opt/include/pkgconfig.
Licensing
Godal is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.
*Note that all licence references and agreements mentioned in the godal README section above
are relevant to that project's source code only.