How to get a false color with nir, red and green bands?

[efad2022]

I'm passing to /stac endpoint the following parameters but I get a white tile rendering :
assets: 'red', assets: 'green', assets: 'nir', rescale: '1,255', rescale: '1,255', rescale: '1,255',
I appreciate any guideline with this. Thanks

[vincentsarago]

@efad2022 we can't really help without reproductible code and access to the data 🤷

[edeo2021]

hi @vincentsarago , sure.

I'm sending the following to Titiler server:

http://localhost:8000/stac/tiles/12/1415/2456.png?tileMatrixSetId=WebMercatorQuad&url=https%3A%2F%2Fearth-search.aws.element84.com%2Fv1%2Fcollections%2Fsentinel-2-l2a%2Fitems%2FS2A_21JYJ_20231226_0_L2A&assets=%5B%20%27red%27%2C%20%27green%27%20%5D&asset_as_band=True&unscale=false&resampling=nearest&reproject=nearest&return_mask=true

In the response I get this:

{
    "detail": "'[\"red\",\"green\",\"nir\"]' is not valid, should be one of ['aot', 'blue', 'coastal', 'green', 'nir', 'nir08', 'nir09', 'red', 'rededge1', 'rededge2', 'rededge3', 'scl', 'swir16', 'swir22', 'visual', 'wvp', 'aot-jp2', 'blue-jp2', 'coastal-jp2', 'green-jp2', 'nir-jp2', 'nir08-jp2', 'nir09-jp2', 'red-jp2', 'rededge1-jp2', 'rededge2-jp2', 'rededge3-jp2', 'scl-jp2', 'swir16-jp2', 'swir22-jp2', 'visual-jp2', 'wvp-jp2']"
}

[vincentsarago]

the assets query parameters is of form list and to provide multiple values you need to pass assets multiple time

assets=red&assets=green&assets=nir

[efad2022]

Thanks @vincentsarago , I have found https://devseed.com/sat-ml-training/Scaling where assets are sent a bit a different:

`

r = requests.get(
f"{titiler_endpoint}/stac/tilejson.json",
params = {
"url": url_template.format(id=sceneid[0]),
"assets": "B04,B03,B02", # Simple RGB combination (True Color)
"color_formula": "Gamma RGB 3.5 Saturation 1.7 Sigmoidal RGB 15 0.35", # We use a rio-color formula to make the tiles look nice
"minzoom": 8, # By default titiler will use 0
"maxzoom": 14, # By default titiler will use 24
}
).json()
print(r)
`

[vincentsarago]

@efad2022 yeah this is pretty old and titiler has changed