crates.io "geospatial" keyword
View the packages on the crates.io package registry that are tagged with the "geospatial" keyword.
Top 9.5% on crates.io
1 version - Latest release: almost 7 years ago - 1 dependent package - 3 dependent repositories - 9.52 thousand downloads total - 4,240 stars on GitHub - 1 maintainer
open-location-code 0.1.0
Library for translating between GPS coordinates (WGS84) and Open Location Code1 version - Latest release: almost 7 years ago - 1 dependent package - 3 dependent repositories - 9.52 thousand downloads total - 4,240 stars on GitHub - 1 maintainer
jisx0401 0.1.1
Utility for JIS X 04017 versions - Latest release: 9 months ago - 12.9 thousand downloads total - 0 stars on GitHub - 1 maintainer
a5 0.4.3 💰
High-performance Rust implementation of the A5 hierarchical spatial indexing system5 versions - Latest release: 7 days ago - 1.13 thousand downloads total - 2 stars on GitHub - 1 maintainer
csgrs 0.20.1 💰
Constructive solid geometry (CSG) on meshes using BSP trees in Rust35 versions - Latest release: about 1 month ago - 23.4 thousand downloads total - 142 stars on GitHub - 1 maintainer
deutsch-geo-env-mapper 0.1.0 removed
geomapper for deutsch code1 version - Latest release: 7 months ago - 706 downloads total - 0 stars on GitHub - 1 maintainer
geomatic 0.1.0
Projections, conversions of geospatial coordinates and related operations.1 version - Latest release: almost 5 years ago - 1 dependent repositories - 2.24 thousand downloads total - 2 stars on GitHub - 1 maintainer
echomap 0.7.3
A command line tool for previewing map files in the terminal20 versions - Latest release: over 2 years ago - 25.5 thousand downloads total - 16 stars on GitHub - 1 maintainer
spatialindex
Higher-level bindings to libspatialindex3 versions - Latest release: 3 days ago - 4.19 thousand downloads total - 1 maintainer
rdp 0.12.8
An FFI wrapper for the Ramer–Douglas–Peucker and Visvalingam-Whyatt algorithms16 versions - Latest release: almost 2 years ago - 24.5 thousand downloads total - 21 stars on GitHub - 1 maintainer
hextree 0.3.2
Location to value mapping.5 versions - Latest release: 11 months ago - 1 dependent repositories - 8.54 thousand downloads total - 57 stars on GitHub - 1 maintainer
e57 0.11.10
A pure Rust library for reading and writing E57 files with point clouds and related image data.32 versions - Latest release: 5 months ago - 1 dependent package - 1 dependent repositories - 68.7 thousand downloads total - 35 stars on GitHub - 1 maintainer
Top 8.7% on crates.io
22 versions - Latest release: 5 days ago - 6 dependent packages - 13 dependent repositories - 531 thousand downloads total - 374 stars on GitHub - 1 maintainer
h3o 0.9.1
A Rust implementation of the H3 geospatial indexing system.22 versions - Latest release: 5 days ago - 6 dependent packages - 13 dependent repositories - 531 thousand downloads total - 374 stars on GitHub - 1 maintainer
polylabel 3.2.0
A Rust implementation of the Polylabel algorithm for finding optimum polygon label positions.39 versions - Latest release: over 1 year ago - 4 dependent packages - 17 dependent repositories - 78.2 thousand downloads total - 54 stars on GitHub - 1 maintainer
clipper2 0.5.3
A polygon Clipping and Offsetting library for Rust.14 versions - Latest release: 3 months ago - 14.7 thousand downloads total - 15 stars on GitHub - 1 maintainer
sfcgal 0.8.2
High-level bindings to SFCGAL and conversion from/to other geometry libraries.10 versions - Latest release: 3 months ago - 1 dependent repositories - 11.4 thousand downloads total - 11 stars on GitHub - 1 maintainer
rapidgeo-simplify 0.1.0
Douglas-Peucker polyline simplification with pluggable distance backends1 version - Latest release: 5 days ago - 0 downloads total - 0 stars on GitHub - 1 maintainer
pelorus 0.1.0
A high-performance GPS map-matching library for geospatial road network processing1 version - Latest release: 6 days ago - 0 downloads total - 1 maintainer
geocentric 0.1.3 💰
Conversion between geodetic and geocentric (cartesian) coordinates3 versions - Latest release: 6 months ago - 1.94 thousand downloads total - 2 stars on GitHub - 1 maintainer
sarpro 0.3.2
A high-performance Sentinel-1 Synthetic Aperture Radar (SAR) GRD product to image processor.7 versions - Latest release: 6 days ago - 1.35 thousand downloads total - 6 stars on GitHub - 1 maintainer
geo-postgis 0.2.2
Conversion between `geo-types` and `postgis` types.4 versions - Latest release: about 3 years ago - 1 dependent package - 26.4 thousand downloads total - 1,729 stars on GitHub - 2 maintainers
Top 2.3% on crates.io
88 versions - Latest release: 6 months ago - 149 dependent packages - 371 dependent repositories - 9.85 million downloads total - 1,729 stars on GitHub - 2 maintainers
geo 0.30.0
Geospatial primitives and algorithms88 versions - Latest release: 6 months ago - 149 dependent packages - 371 dependent repositories - 9.85 million downloads total - 1,729 stars on GitHub - 2 maintainers
Top 2.3% on crates.io
32 versions - Latest release: about 1 month ago - 148 dependent packages - 411 dependent repositories - 11.6 million downloads total - 1,729 stars on GitHub - 2 maintainers
geo-types 0.7.17
Geospatial primitive data types32 versions - Latest release: about 1 month ago - 148 dependent packages - 411 dependent repositories - 11.6 million downloads total - 1,729 stars on GitHub - 2 maintainers
stac-types
Low-level types for stac-rs. Should not be used directly, usually.1 version - Latest release: 6 days ago - 1.24 thousand downloads total - 116 stars on GitHub - 1 maintainer
dipr 0.1.0
Converts the National Weather Service's (NWS) Digital Instantaneous Precipitation Rate (DIPR) rad...1 version - Latest release: 5 months ago - 532 downloads total - 3 stars on GitHub - 1 maintainer
japanmesh 0.1.1 💰
Utilities for Japanese Grid Square Code (JIS X 0410:2002 地域メッシュコード)2 versions - Latest release: 5 months ago - 1.05 thousand downloads total - 0 stars on GitHub - 1 maintainer
geomorph 2.0.2
Simple conversion between different coordinate systems11 versions - Latest release: 12 months ago - 1 dependent repositories - 34.1 thousand downloads total - 14 stars on GitHub - 1 maintainer
routers_codec 0.1.2
Encoding and Decoding Primitives for Routers3 versions - Latest release: 2 months ago - 1.13 thousand downloads total - 1 stars on GitHub - 1 maintainer
xs_h3 0.1.0
Excerion Sun's Rust implementation of Uber's H3 geospatial indexing library1 version - Latest release: 4 months ago - 405 downloads total - 1 stars on GitHub - 1 maintainer
geoarrow-test 0.5.0
Test data for GeoArrow data3 versions - Latest release: about 1 month ago - 1.04 thousand downloads total - 356 stars on GitHub - 1 maintainer
geoarrow 0.5.0
GeoArrow amalgamation crate.18 versions - Latest release: about 1 month ago - 2 dependent packages - 1 dependent repositories - 38.2 thousand downloads total - 356 stars on GitHub - 1 maintainer
geodatafusion 0.0.0
Rust implementation of GeoArrow2 versions - Latest release: almost 3 years ago - 423 downloads total - 356 stars on GitHub - 1 maintainer
geoarrow-cast 0.5.0
Functions for converting from one GeoArrow geometry type to another.2 versions - Latest release: about 1 month ago - 603 downloads total - 356 stars on GitHub - 1 maintainer
geoarrow-array 0.5.0
GeoArrow array definitions.3 versions - Latest release: about 1 month ago - 1.51 thousand downloads total - 356 stars on GitHub - 1 maintainer
geoarrow-flatgeobuf 0.5.0
Reader and writer for FlatGeobuf files to GeoArrow memory.1 version - Latest release: about 1 month ago - 214 downloads total - 356 stars on GitHub - 1 maintainer
geoarrow-schema 0.5.0
GeoArrow geometry type and metadata definitions.3 versions - Latest release: about 1 month ago - 1.56 thousand downloads total - 356 stars on GitHub - 1 maintainer
pyo3-geoarrow 0.1.0-beta.1
GeoArrow integration for pyo3.1 version - Latest release: 11 months ago - 974 downloads total - 356 stars on GitHub - 1 maintainer
geoparquet 0.5.0
GeoParquet reader and writer.4 versions - Latest release: about 1 month ago - 1.2 thousand downloads total - 356 stars on GitHub - 1 maintainer
geopolars 0.1.0-alpha.3
Geospatial extensions for Polars2 versions - Latest release: almost 3 years ago - 2.59 thousand downloads total - 737 stars on GitHub - 1 maintainer
e57-to-las 0.8.0
Convert E57 point cloud files to LAS15 versions - Latest release: 4 months ago - 16 thousand downloads total - 8 stars on GitHub - 2 maintainers
fastgeotoolkit 0.1.7
A novel high-performance geospatial analysis framework with advanced route density mapping algori...2 versions - Latest release: about 1 month ago - 1.56 thousand downloads total - 1 stars on GitHub - 1 maintainer
Top 6.2% on crates.io
24 versions - Latest release: 5 months ago - 16 dependent packages - 33 dependent repositories - 1.46 million downloads total - 405 stars on GitHub - 1 maintainer
gdal 0.18.0
GDAL bindings for Rust24 versions - Latest release: 5 months ago - 16 dependent packages - 33 dependent repositories - 1.46 million downloads total - 405 stars on GitHub - 1 maintainer
Top 6.7% on crates.io
13 versions - Latest release: 5 months ago - 7 dependent packages - 34 dependent repositories - 1.45 million downloads total - 405 stars on GitHub - 2 maintainers
gdal-sys 0.11.0
Low level GDAL bindings for Rust13 versions - Latest release: 5 months ago - 7 dependent packages - 34 dependent repositories - 1.45 million downloads total - 405 stars on GitHub - 2 maintainers
gdal-src 0.2.1+3.10.3
Build script for compiling GDAL from source.3 versions - Latest release: 5 months ago - 21.2 thousand downloads total - 405 stars on GitHub - 1 maintainer
osm_graph 0.1.1
This library provides a set of tools for generating isochrones from geographic coordinates. It le...2 versions - Latest release: over 1 year ago - 2.59 thousand downloads total - 18 stars on GitHub - 1 maintainer
turf-rs 0.1.2
A Rust library for advanced geospatial analysis based on Turf, providing powerful tools for manip...3 versions - Latest release: 8 days ago - 274 downloads total - 1 maintainer
jprect 0.1.0 💰
Japan Plane Rectangular Coordinate System8 versions - Latest release: 6 months ago - 4.76 thousand downloads total - 4 stars on GitHub - 1 maintainer
lerc-sys 0.1.5
Low-level FFI bindings to Esri's LERC C API6 versions - Latest release: 2 months ago - 2.78 thousand downloads total - 0 stars on GitHub - 1 maintainer
lonlat_bng
Convert longitude and latitude coordinates to BNG coordinates, and vice versa20 versions - Latest release: 8 days ago - 55.4 thousand downloads total - 25 stars on GitHub - 1 maintainer
Top 6.7% on crates.io
58 versions - Latest release: 5 months ago - 8 dependent packages - 27 dependent repositories - 437 thousand downloads total - 161 stars on GitHub - 2 maintainers
proj 0.30.0
High-level Rust bindings for the latest stable version of PROJ58 versions - Latest release: 5 months ago - 8 dependent packages - 27 dependent repositories - 437 thousand downloads total - 161 stars on GitHub - 2 maintainers
Top 7.2% on crates.io
43 versions - Latest release: 5 months ago - 4 dependent packages - 16 dependent repositories - 423 thousand downloads total - 161 stars on GitHub - 1 maintainer
proj-sys 0.26.0
Rust bindings for PROJ v9.6.x43 versions - Latest release: 5 months ago - 4 dependent packages - 16 dependent repositories - 423 thousand downloads total - 161 stars on GitHub - 1 maintainer
Top 5.1% on crates.io
49 versions - Latest release: 6 months ago - 80 dependent packages - 142 dependent repositories - 4.95 million downloads total - 314 stars on GitHub - 3 maintainers
geojson 0.24.2
Read and write GeoJSON vector geographic data49 versions - Latest release: 6 months ago - 80 dependent packages - 142 dependent repositories - 4.95 million downloads total - 314 stars on GitHub - 3 maintainers
d3_geo_voronoi_rs 0.10.7
A port into rustlang of the javascript library d3-geo-voronoi37 versions - Latest release: about 1 month ago - 39.2 thousand downloads total - 8 stars on GitHub - 1 maintainer
Top 6.8% on crates.io
29 versions - Latest release: 4 months ago - 20 dependent packages - 53 dependent repositories - 3.28 million downloads total - 52 stars on GitHub - 1 maintainer
wkt 0.14.0
Rust read/write support for well-known text (WKT)29 versions - Latest release: 4 months ago - 20 dependent packages - 53 dependent repositories - 3.28 million downloads total - 52 stars on GitHub - 1 maintainer
geos-sys 2.0.6
GEOS C API bindings25 versions - Latest release: over 1 year ago - 1 dependent package - 10 dependent repositories - 462 thousand downloads total - 122 stars on GitHub - 1 maintainer
Top 7.9% on crates.io
31 versions - Latest release: 7 months ago - 11 dependent packages - 18 dependent repositories - 471 thousand downloads total - 122 stars on GitHub - 2 maintainers
geos 10.0.0
Rust bindings for GEOS C API31 versions - Latest release: 7 months ago - 11 dependent packages - 18 dependent repositories - 471 thousand downloads total - 122 stars on GitHub - 2 maintainers
geos-src 0.2.3
static library build for geos-sys5 versions - Latest release: over 1 year ago - 1 dependent package - 251 thousand downloads total - 122 stars on GitHub - 1 maintainer
Top 8.7% on crates.io
18 versions - Latest release: almost 2 years ago - 10 dependent packages - 21 dependent repositories - 164 thousand downloads total - 89 stars on GitHub - 1 maintainer
gpx 0.10.0
Rust read/write support for GPS Exchange Format (GPX)18 versions - Latest release: almost 2 years ago - 10 dependent packages - 21 dependent repositories - 164 thousand downloads total - 89 stars on GitHub - 1 maintainer
Top 8.3% on crates.io
7 versions - Latest release: 4 months ago - 3 dependent packages - 566 dependent repositories - 7.93 million downloads total - 44 stars on GitHub - 1 maintainer
geographiclib-rs 0.2.5
A port of geographiclib in Rust.7 versions - Latest release: 4 months ago - 3 dependent packages - 566 dependent repositories - 7.93 million downloads total - 44 stars on GitHub - 1 maintainer
kml 0.11.0
KML support for Rust30 versions - Latest release: 26 days ago - 6 dependent packages - 7 dependent repositories - 180 thousand downloads total - 28 stars on GitHub - 1 maintainer
geocoding 0.4.0
Geocoding library for Rust8 versions - Latest release: about 3 years ago - 3 dependent packages - 6 dependent repositories - 26.3 thousand downloads total - 78 stars on GitHub - 3 maintainers
ogcapi-services 0.3.0
Server implementation of several OGC API Standards.5 versions - Latest release: 5 months ago - 1 dependent package - 5.55 thousand downloads total - 27 stars on GitHub - 1 maintainer
ogcapi-client 0.3.0
Client to access OGC API Feature and STAC endpoints.3 versions - Latest release: 5 months ago - 1 dependent package - 3.47 thousand downloads total - 27 stars on GitHub - 1 maintainer
ogcapi-processes 0.3.0
Processor trait and implementations1 version - Latest release: 5 months ago - 643 downloads total - 27 stars on GitHub - 1 maintainer
ogcapi-types 0.3.0
Types as defined by various OGC API Standards.3 versions - Latest release: 5 months ago - 5 dependent packages - 24.9 thousand downloads total - 27 stars on GitHub - 1 maintainer
ogcapi 0.3.1
OGC API building blocks.4 versions - Latest release: 5 months ago - 3.49 thousand downloads total - 27 stars on GitHub - 1 maintainer
ogcapi-drivers 0.3.0
Driver traits and implementations6 versions - Latest release: 5 months ago - 2 dependent packages - 7.09 thousand downloads total - 27 stars on GitHub - 1 maintainer
geocoding-async 0.5.1 💰
Asynchronous Geocoding library for Rust2 versions - Latest release: over 1 year ago - 3.95 thousand downloads total - 0 stars on GitHub - 1 maintainer
dms-coordinates 1.3.1
Package to handle D°M'S'' coordinates13 versions - Latest release: about 1 year ago - 1 dependent package - 1 dependent repositories - 42 thousand downloads total - 7 stars on GitHub - 1 maintainer
geo-traits 0.3.0
Geospatial traits5 versions - Latest release: 4 months ago - 97.7 thousand downloads total - 1,729 stars on GitHub - 1 maintainer
flat_projection 0.4.0 💰
Fast geodesic distance approximations via flat surface projection.5 versions - Latest release: almost 5 years ago - 3 dependent repositories - 17.3 thousand downloads total - 20 stars on GitHub - 1 maintainer
supercluster 3.0.6
Geospatial and non-geospatial point clustering.39 versions - Latest release: 18 days ago - 31.5 thousand downloads total - 4 stars on GitHub - 1 maintainer
globalmaptile 0.1.7
Convert a raster into TMS tiles, create KML SuperOverlay EPSG:4326, generate a simple HTML viewer...1 version - Latest release: about 4 years ago - 1.61 thousand downloads total - 0 stars on GitHub - 1 maintainer
cimengine 2.0.0
Country info map engine build tools1 version - Latest release: over 1 year ago - 1.33 thousand downloads total - 3 stars on GitHub - 1 maintainer
tileyolo 0.2.3
A simple raster-based XYZ tile server for serving GeoTIFFs6 versions - Latest release: 4 months ago - 2.45 thousand downloads total - 4 stars on GitHub - 1 maintainer
sfconversions 0.4.0 💰
Support conversion from R's sf package types to geo_types geometry primitives using extendr4 versions - Latest release: about 1 month ago - 3.64 thousand downloads total - 12 stars on GitHub - 1 maintainer
duckdb-postgis 0.2.6
A library for transforming geospatial data using DuckDB and ingesting it into a PostGIS database.17 versions - Latest release: about 2 months ago - 11.6 thousand downloads total - 4 stars on GitHub - 1 maintainer
srtm_reader 0.5.1
A performant DTM(srtm) reader for .hgt files.7 versions - Latest release: 7 months ago - 5.77 thousand downloads total - 1 stars on GitHub - 1 maintainer
toolbox-rs 0.6.0
A toolbox of basic data structures and algorithms16 versions - Latest release: 4 months ago - 11.9 thousand downloads total - 25 stars on GitHub - 1 maintainer
webmerc 0.1.1
A Rust port of globalmaptiles.py2 versions - Latest release: about 2 years ago - 2.43 thousand downloads total - 0 stars on GitHub - 1 maintainer
jord 0.15.0
Geographical Position Calculations (Ellipsoidal and Spherical models)15 versions - Latest release: 11 months ago - 17.3 thousand downloads total - 6 stars on GitHub - 1 maintainer
oter 0.1.0
oter is a command-line tool designed to help users seamlessly convert spatial data between variou...1 version - Latest release: over 1 year ago - 1.21 thousand downloads total - 1 maintainer
stac-api 0.8.0
Rust library for the SpatioTemporal Asset Catalog (STAC) API specification16 versions - Latest release: about 2 months ago - 4 dependent packages - 1 dependent repositories - 19.4 thousand downloads total - 47 stars on GitHub - 1 maintainer
h3ron-polars 0.4.0
Integration of the h3 geospatial indexing system with polars dataframes4 versions - Latest release: over 1 year ago - 4.84 thousand downloads total - 85 stars on GitHub - 1 maintainer
py_geo_interface 0.8.0
Exchange vector geometries between Rust and Python using pyo3 and Pythons __geo_interface__ proto...12 versions - Latest release: over 1 year ago - 17.2 thousand downloads total - 23 stars on GitHub - 1 maintainer
spatialtime 0.2.3
A simple library to lookup longitude + latitude pairs, using flatgeobufs.10 versions - Latest release: 3 months ago - 7.88 thousand downloads total - 0 stars on GitHub - 1 maintainer
world-file 0.1.0
Rust read/write support for world files3 versions - Latest release: almost 9 years ago - 5.99 thousand downloads total - 7 stars on GitHub - 1 maintainer
anime 0.1.2
Approximate Network Matching, Integration, and Enrichment4 versions - Latest release: 9 months ago - 2.3 thousand downloads total - 1 maintainer
berlin-core 0.2.6
Identify locations and tag them with UN-LOCODEs and ISO-3166-2 subdivisions.6 versions - Latest release: over 1 year ago - 8.42 thousand downloads total - 1 maintainer
globalmaptiles-rs 0.1.6
Convert a raster into TMS tiles, create KML SuperOverlay EPSG:4326, generate a simple HTML viewer...7 versions - Latest release: over 5 years ago - 9.1 thousand downloads total - 1 stars on GitHub - 1 maintainer
stac-async 0.5.4
Asynchronous I/O for stac-rs10 versions - Latest release: 12 months ago - 2 dependent packages - 12.6 thousand downloads total - 47 stars on GitHub - 1 maintainer
geo-index 0.3.1
Fast, immutable, ABI-stable spatial indexes.5 versions - Latest release: 3 months ago - 1 dependent package - 30.6 thousand downloads total - 167 stars on GitHub - 1 maintainer
eyros 4.6.2
multi-dimensional interval database17 versions - Latest release: about 3 years ago - 1 dependent package - 1 dependent repositories - 21.3 thousand downloads total - 283 stars on GitHub - 2 maintainers
stac-cli 0.5.3
Command line interface for stac-rs22 versions - Latest release: 7 months ago - 18.4 thousand downloads total - 68 stars on GitHub - 1 maintainer
lerc 0.2.1
Safe and idiomatic Rust wrapper for Esri's LERC compression library3 versions - Latest release: 3 months ago - 1.18 thousand downloads total - 2 stars on GitHub - 1 maintainer
spatialindex-sys
Rust bindings to libspatialindex1 version - Latest release: 18 days ago - 1 dependent package - 1.75 thousand downloads total - 1 maintainer
geo-core 0.1.4
Common tools for working with spatial data5 versions - Latest release: over 1 year ago - 5.52 thousand downloads total - 1 stars on GitHub - 1 maintainer
h3o-cli 0.2.8
A CLI app that exposes most of the h3o API for scripting.13 versions - Latest release: 19 days ago - 12.1 thousand downloads total - 10 stars on GitHub - 1 maintainer
h3o-bit 0.1.2
Low-level library for H3 indexes' bit twiddling.3 versions - Latest release: 19 days ago - 3 dependent packages - 206 thousand downloads total - 0 stars on GitHub - 1 maintainer
arcrs 0.1.0
Thin Python wrapper for implementing Geoprocessing Tools using Rust.8 versions - Latest release: over 4 years ago - 11.1 thousand downloads total - 1 maintainer
polyline-iter 0.3.0
Zero-dependency iterator-based Google Encoded Polyline encoder and decoder4 versions - Latest release: 6 months ago - 2.54 thousand downloads total - 0 stars on GitHub - 1 maintainer
Related Keywords
rust
76
geo
67
gis
62
geography
36
python
23
raster
19
geometry
14
metadata
14
pyo3
13
stac
13
apache-arrow
11
webassembly
11
typescript
11
javascript
11
geoarrow
11
spatial
10
wasm-bindgen
10
h3
10
api
10
geoparquet
10
earth-observation
10
command-line
9
coordinates
7
proj
7
server
7
hacktoberfest
6
gdal
6
maps
6
gps
6
projection
6
map
6
rust-library
6
ffi
5
geodesy
5
dataframe
5
geohash
5
ndarray
5
search
4
tile
4
cli
4
lidar
4
japan
4
spatial-index
4
rtree
3
computational-geometry
3
mapping
3
algorithm
3
point-cloud
3
geos
3
time
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search-engine
3
proximity-search
3
offsetting
3
nearest-neighbors
3
location-based-services
3
in-memory-caching
3
cnc
3
pairing
3
osgeo
3
timezone
3
geocoding
3
transformations
3
polygon
3
polyline
3
sensors
3
path-tracing
2
game-development
2
navigation
2
map-matching
2
libgeos
2
3d
2
database
2
science
2
geotiff
2
pdal
2
arcgis
2
hero
2
geojson
2
transforms
2
postgis
2
data
2
tileserver
2
gpmf
2
wgs84
2
ogc
2
owc
2
wfs
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wms
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world-files
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location-based
2
xyz
2
gpx
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esri
2
lerc
2
srtm
2
compression
2
dem
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geolocation
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algorithms
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