Good day
I am trying to get the S1 NRPB data but the output is just a value of 1 in my tiff file.
See eval script below:
curl -X POST https://services.sentinel-hub.com/api/v1/process \
-H 'Content-Type: multipart/form-data' \
-H 'Authorization: Bearer ' \
--form-string 'request={
"input": {
"bounds": {
"geometry": {
"type": "MultiPolygon",
"coordinates": [
[
[
[
391702.439726132,
8107312.635254357
],
[
391717.757104949,
8095730.981196007
],
[
380885.56934175163,
8095718.394280376
],
[
380864.2894166684,
8107280.131685488
],
[
391702.439726132,
8107312.635254357
]
]
]
]
},
"properties": {
"crs": "http://www.opengis.net/def/crs/EPSG/0/32737"
}
},
"data": [
{
"dataFilter": {
"timeRange": {
"from": "2023-06-16T00:00:00Z",
"to": "2023-06-16T23:59:59Z"
},
"mosaickingOrder": "mostRecent",
"resolution": "HIGH",
"acquisitionMode": "IW",
"polarization": "DV",
"orbitDirection": "DESCENDING"
},
"processing": {
"upsampling": "NEAREST",
"backCoeff": "GAMMA0_ELLIPSOID",
"orthorectify": true,
"demInstance": "COPERNICUS_30"
},
"type": "sentinel-1-grd"
}
]
},
"output": {
"width": 1088.3085091828946,
"height": 1167.957792197513,
"responses": [
{
"identifier": "default",
"format": {
"type": "image/tiff"
}
}
]
}
}' \
--form-string 'evalscript=//VERSION=3
function setup() {
return {
input: [
{
bands: ["VV","VH"],
}
],
output: [
{
id: "default",
bands: 1,
sampleType: "FLOAT32",
noDataValue: 0,
},
],
mosaicking: "SIMPLE",
};
}
function evaluatePixel(samples) {
let vv = [samples.VV];
let vh = [samples.VH];
let nrpb =[((vh - vv)/(vh + vv))];
return nrpb;
}
'