GeoArrow (Apache Arrow)
Open BetaGeoArrow, Apache Arrow पर आधारित भू-स्थानिक डेटा के लिए एक स्तंभ-आधारित (columnar) फ़ॉर्मैट है। बिग डेटा एनालिटिक्स, ML पाइपलाइनों और विज़ुअलाइज़ेशन के लिए आदर्श। DuckDB, Pandas, Polars और अन्य Arrow-संगत टूलों के साथ काम करता है।
मुख्य विशेषताएँ
GeoArrow प्रारूप के बारे में
Apache Arrow is the standard for representing tables in memory: columns lie contiguously, the schema is described explicitly, and different programs read the very same bytes without copying or re-encoding. GeoArrow is the agreement on how to store geometry inside that structure so that GeoPandas, DuckDB, Polars, deck.gl and GDAL understand it.
The format is taken when data is not displayed but computed: spatial joins over millions of features, feature preparation for a model, a dashboard on top of a columnar engine. At those volumes, parsing text GeoJSON eats more time than the analysis itself.
The output is a single .arrow file (Apache Arrow IPC, also known as Feather v2). All the layers are merged into one table, and every row has a layer column with the name of its source layer. Geometry is stored as a binary column in WKB format, and the WGS84 (EPSG:4326) coordinate system is described in the schema metadata per the GeoArrow 1.0.0 convention.
By default the file is compressed with the zstd codec; you can choose lz4 or no compression at all. There is a safety limit of 10 million features per export, so as not to eat up the server's memory.
GeoArrow फ़ाइलें कौन सा प्रोग्राम खोलता है
निम्नलिखित प्रोग्राम और अनुप्रयोग OSM2CDR से निर्यात की गई GeoArrow (Apache Arrow) (.arrow) फ़ाइलों को खोल, संपादित और उनके साथ काम कर सकते हैं:
Format specifications
- Open standard
- 3D coordinates supported
- Lossless (no quality loss)
- Stores feature attributes
- Output: 1 file
- GeoArrow .arrow (Apache Arrow extension). In-memory columnar geometry, zero-copy interop with pandas, R, Julia.
GeoArrow मानचित्रों का उपयोग कौन करता है
GeoArrow कैसे निर्यात करें
निर्यात के बाद कैसे खोलें
- Python — pyarrow.ipc.open_file("map.arrow").read_all() gives you the table; the geometry is restored from the WKB column with shapely.from_wkb or geopandas.
- DuckDB — INSTALL spatial; LOAD spatial; then SELECT * FROM 'map.arrow' and ST_GeomFromWKB on the geometry column.
- Polars and pandas — pl.read_ipc("map.arrow") or reading through pyarrow: the attribute part works like an ordinary table, with no geo wrapping.
- R and Julia — the arrow packages read the same file: it is one format across all languages, no conversion needed.
- Visualization and GIS — lonboard and deck.gl draw Arrow tables directly; for QGIS it is easier to convert to GeoPackage with ogr2ogr (GDAL 3.8 and newer).
GeoArrow में लोकप्रिय मानचित्र
GeoArrow (Apache Arrow) मानचित्र निर्यात प्राप्त करें
OpenStreetMap से पेशेवर GeoArrow मानचित्र डाउनलोड करें. तत्काल जनरेशन, कोई भी क्षेत्र.
अक्सर पूछे जाने वाले प्रश्न
संबंधित प्रारूप
अक्सर एक साथ निर्यात किए जाते हैं
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