https://github.com/scaleweather/mappers_warp

Very simplistic tool for reprojecting maps, based on the GdalWarp, using mappers for geographic projection
https://github.com/scaleweather/mappers_warp

Last synced: 5 months ago
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Very simplistic tool for reprojecting maps, based on the GdalWarp, using mappers for geographic projection

• Host: GitHub
• URL: https://github.com/scaleweather/mappers_warp
• Owner: ScaleWeather
• License: apache-2.0
• Created: 2024-03-24T12:52:00.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2025-09-28T15:52:05.000Z (8 months ago)
• Last Synced: 2025-10-05T21:44:55.144Z (8 months ago)
• Language: Rust
• Homepage:
• Size: 4.03 MB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Mappers Warp

[![Github Repository](https://img.shields.io/badge/Github-Repository-blue?style=flat-square&logo=github&color=blue)](https://github.com/ScaleWeather/mappers_warp)

[![Crates.io](https://img.shields.io/crates/v/mappers_warp?style=flat-square)](https://crates.io/crates/mappers_warp)

[![License](https://img.shields.io/github/license/ScaleWeather/mappers_warp?style=flat-square)](https://choosealicense.com/licenses/apache-2.0/)

[![dependency status](https://deps.rs/repo/github/ScaleWeather/mappers_warp/status.svg?style=flat-square)](https://deps.rs/repo/github/ScaleWeather/mappers_warp)

[![docs.rs](https://img.shields.io/docsrs/mappers_warp?style=flat-square)](https://docs.rs/mappers_warp)

Very simplistic tool for reprojecting maps, based on the `GdalWarp`, using mappers for geographic projection.

This tool is effectively a reimplementation of `GdalWarp` code - all credit for the algorithm creation goes to the GDAL developers.

As you can see, this tool is not very comprehensively documented - if you would like to add something useful

to the documentation feel free to open a PR on Github.

## Features

- `multithreading` - enables parallel functions for `Warper`. Requires `rayon`, but can provide significant

  performance improvements for some rasters.

- `io` - enables support for saving and loading `Warper` from file. Requires `rkyv`, but can be useful

  when you want to initialize `Warper` ahead-of-time.

## Example

See more usage examples in integration tests.

```rust

use mappers::{

    Ellipsoid, projections::{LambertConformalConic, LongitudeLatitude},

};

use mappers_warp::{CubicBSpline, Warper, RasterBoundsDefinition};

use ndarray::Array2;

let src_proj = LongitudeLatitude;

let tgt_proj = LambertConformalConic::builder()

    .ref_lonlat(80., 24.)

    .standard_parallels(12.472955, 35.1728044444444)

    .ellipsoid(Ellipsoid::WGS84)

    .initialize_projection()?;

let source_bounds =

    RasterBoundsDefinition::new((60.00, 68.25), (31.75, 40.0), 0.25, 0.25, src_proj)?;

let target_bounds = RasterBoundsDefinition::new(

    (2_320_000. - 4_000_000., 2_740_000. - 4_000_000.),

    (5_090_000. - 4_000_000., 5_640_000. - 4_000_000.),

    10_000.,

    10_000.,

    tgt_proj,

)?;

let warper = Warper::initialize::(

    &source_bounds,

    &target_bounds,

)?;

let source_raster = Array2::zeros((34, 34));

let target_raster = warper.warp_ignore_nodata(&source_raster)?;

```