Update PlanetScope scripts #308
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…ixels transparent
| function evaluatePixel(samples) { | ||
| let ndwi = (samples.green / 3000 - samples.nir / 3000) / (samples.green / 3000 + samples.nir / 3000); | ||
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| let id_default = colorBlend(ndwi, |
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I would suggest removing dataMask from the colorBlend function to avoid repeatation. For example:
let id_default = colorBlend(ndwi,
[-1, -0.5, -0.2, 0, 0.2, 0.5, 1.0],
[
[1, 0, 1],
[1, 0.5, 0],
[1, 1, 0],
[0.2, 1, 0.5],
[0, 0, 1],
[0, 0, 0.3],
[0, 0, 0],
]
);
| } | ||
| } | ||
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| function evaluatePixel(samples) { |
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For SIMPLE mosaicking I would use sample
| ] | ||
| ); | ||
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| return { default: id_default }; |
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To include dataMask we can return
return { default: id_default.concat(sample.dataMask) };|
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| function setup() { | ||
| return { | ||
| input: [{ bands: ["green", "nir", "dataMask"] }], |
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We can remove the dataMask as it is not used in the evaluatePixel function
| } | ||
| } | ||
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| function evaluatePixel(samples) { |
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For SIMPLE mosaicking I would suggest using sample
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| function evaluatePixel(samples) { | ||
| let ndwi = index(samples.green, samples.nir); | ||
| return {default: [ndwi]}; |
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To avoid infinite value I would suggest returning the following:
return {default: [isFinite(ndwi) ? ndwi : NaN]};| } | ||
| } | ||
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| function evaluatePixel(samples) { |
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For SIMPLE mosaicking I would use sample
| let ndwi = (samples.Green / 3000 - samples.NIR / 3000) / (samples.Green / 3000 + samples.NIR / 3000); | ||
| const indexVal = samples.dataMask === 1 ? ndwi : NaN; | ||
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| let id_default = colorBlend(ndwi, |
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Same as the visualisation script. I would remove the dataMask from the colorBlend function to avoid repeatation
| ); | ||
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| return { | ||
| default: id_default, |
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Include dataMask by returning
id_default.concat(sample.dataMask)|
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| function evaluatePixel(samples) { | ||
| let ndwi = (samples.Green / 3000 - samples.NIR / 3000) / (samples.Green / 3000 + samples.NIR / 3000); | ||
| const indexVal = samples.dataMask === 1 ? ndwi : NaN; |
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I would mask infinite number ((sample.Green + sample.NIR) == 0) as well.
Updated / added the NDWI scripts
script.jswhich contains "normal" visualization without additional outputs needed for EO Browser statistics and histogrameob.jswhich contains additional outputs needed for EO Browser statistics and histogramraw.jswhich just outputs raw NDWI valuesUpdated
true colorandfalse colorscriptsscript.jsfor both now usesdataMaskto make pixels with no data transparent