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@thi.ng/pixel-io-geotiff
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[!NOTE] This is one of 192 standalone projects, maintained as part of the @thi.ng/umbrella monorepo and anti-framework.
🚀 Please help me to work full-time on these projects by sponsoring me on GitHub. Thank you! ❤️
GeoTIFF reader support for @thi.ng/pixel.
This package is only intended to simplify obtaining DEM (elevation) data and not aimed at general GeoTIFF functionality. For the latter we recommend using the wrapped geotiff.js package directly.
ALPHA - bleeding edge / work-in-progress
Search or submit any issues for this package
yarn add @thi.ng/pixel-io-geotiff
ESM import:
import * as geo from "@thi.ng/pixel-io-geotiff";
Browser ESM import:
<script type="module" src="https://esm.run/@thi.ng/pixel-io-geotiff"></script>
For Node.js REPL:
const geo = await import("@thi.ng/pixel-io-geotiff");
Package sizes (brotli'd, pre-treeshake): ESM: 399 bytes
import { GRAY16 } from "@thi.ng/pixel";
import { readGeoTiff } from "@thi.ng/pixel-io-geotiff";
import { asPGM16 } from "@thi.ng/pixel-io-netpbm";
import { readFileSync } from "fs";
// load GeoTIFF image and convert to thi.ng/pixel floatBuffer
// the result image uses a custom pixel format (FLOAT_GRAY_RANGE, with [min..max]
// set to the analyzed value range found in the source image raster...)
const result = await readGeoTiff(readFileSync("USGS_1_n37w119_20211004.tif"));
// { img: FloatBuffer { size: [ 3612, 3612 ], ... }, tiff: { ... } }
// convert to 16bit PGM
writeFileSync("n37w119.pgm", asPGM16(result.img.as(GRAY16)));
// the result also contains the original TIFF image
// (see 3rd party geotiff package for more details)
result.tiff.getGDALMetadata(0);
// {
// LAYER_TYPE: '*',
// RepresentationType: '*',
// STATISTICS_MAXIMUM: '4412.8549804688',
// STATISTICS_MEAN: '2114.5010480446',
// STATISTICS_MINIMUM: '140.41374206543',
// STATISTICS_STDDEV: '918.91201914189',
// STATISTICS_VALID_PERCENT: '100'
// }
If this project contributes to an academic publication, please cite it as:
@misc{thing-pixel-io-geotiff,
title = "@thi.ng/pixel-io-geotiff",
author = "Karsten Schmidt",
note = "https://thi.ng/pixel-io-geotiff",
year = 2023
}
© 2023 - 2024 Karsten Schmidt // Apache License 2.0
FAQs
GeoTIFF reader support for @thi.ng/pixel
The npm package @thi.ng/pixel-io-geotiff receives a total of 14 weekly downloads. As such, @thi.ng/pixel-io-geotiff popularity was classified as not popular.
We found that @thi.ng/pixel-io-geotiff demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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