is-cog
v0.0.1
Published
Super Light and Fast Method for Checking if a TIFF is a Cloud Optimized GeoTIFF
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Readme
:warning: This package is under development. Please report an issues here: https://github.com/geotiff/is-cog/issues
is-cog
Super Light and Fast Method for Checking if a TIFF is a Cloud Optimized GeoTIFF
how does it work
- It uses id-tif to check if the file is a TIFF.
- If it is a TIFF, it uses is-geotiff to check if the file is a GeoTIFF.
- If it is a GeoTIFF, it uses has-bytes to check if the bytes associated with the following tags are present: TileWidth, TileLength, TileOffsets, and TileByteCounts.
install
npm install is-cog
usage
const fs = require("fs");
const isCOG = require("is-cog");
const buffer = fs.readFileSync("./landsat_scene.tiff");
const { is_cog, is_geotiff, is_tiff } = isCOG({
data: buffer,
debug: false // set debug to true for increased logging
});
// is_cog is true
// is_geotiff is true
// is_tiff is true