id_45.js

//VERSION=3
// Modified Soil Adjusted Vegetation Index hyper  (abbrv. MSAVIhyper)
//
// General formula: (0.5) * ((2 *800nm + 1) - sqrt((2 * 800nm + 1)^2- 8 * (800nm - 670nm)))
// This is an auto-generated script. Double checking the source information with the URL below is recommended.
// URL https://www.indexdatabase.de/db/si-single.php?sensor_id=96&rsindex_id=45
//

let index = (0.5) * ((2.0 * B08 + 1.0) - Math.sqrt(Math.pow((2.0 * B08 + 1.0), 2.0) - 8.0 * (B08 - B04)));
let min = -0.44;
let max = 0.58;
let zero = 0.0;

// colorBlend will return a color when the index is between min and max and white when it is less than min.
// To see black when it is more than max, uncomment the last line of colorBlend.
// The min/max values were computed automatically and may be poorly specified, feel free to change them to tweak the displayed range.
// This index crosses zero, so a diverging color map is used. To tweak the value of the break in the color map, change the variable 'zero'.

let underflow_color = [1, 1, 1];
let low_color = [208/255, 88/255, 126/255];
let high_color = [241/255, 234/255, 200/255];
let zero_color = [0, 147/255, 146/255];
let overflow_color = [0, 0, 0];

return colorBlend(index, [min, min, zero, max],
[
	underflow_color,
	low_color,
	zero_color, // divergent step at zero
	high_color,
	//overflow_color // uncomment to see overflows
]);