kepler.gl
Version:
kepler.gl is a webgl based application to visualize large scale location data in the browser
21 lines (19 loc) • 2.63 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.soilAdjustedVegetationIndex = void 0;
// SPDX-License-Identifier: MIT
// Copyright contributors to the kepler.gl project
// Calculate soil-adjusted vegetation index
// SAVI = ((Band 5 – Band 4) / (Band 5 + Band 4 + 0.5)) * (1.5).
// https://www.usgs.gov/land-resources/nli/landsat/landsat-soil-adjusted-vegetation-index
var fs = "float soil_adjusted_vegetation_index_calc(vec4 image) {\n float band5 = image.r;\n float band4 = image.g;\n\n float numerator = band5 - band4;\n float denominator = (band5 + band4 + 0.5) * 1.5;\n return numerator / denominator;\n}\n";
var soilAdjustedVegetationIndex = exports.soilAdjustedVegetationIndex = {
name: 'soil_adjusted_vegetation_index',
fs: fs,
inject: {
'fs:DECKGL_MUTATE_COLOR': "\n image = vec4(soil_adjusted_vegetation_index_calc(image), 0., 0., 0.);\n "
}
};
//# sourceMappingURL=data:application/json;charset=utf-8;base64,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