ndvi-image

Function: ndvi

Description: The ndvi function returns a floating point image with values between -1 and 1. NDVI is computed with the following band math: (nir1-red)/(nir1+red). All bands are atmospherically corrected for true surface reflectance prior to this computation.

Function Parameters:

name	type	description	required
collect_identifier	string	The collect ID. See Collect ID description	true
crs	string	The CRS of the output image. i.e., "UTM", "EPSG:4326" etc... See CRS description	true

For constructing a valid service url with this function and desired parameters please see our URL Formation doc.

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Function: ndvi_dra

Description: The ndvi_dra function performs a dynamic range adjustment on the floating point NDVI image to return an 8-bit grayscale image. NDVI is computed with the following band math: (nir1-red)/(nir1+red). All bands are atmospherically corrected for true surface reflectance prior to this computation.

Function Parameters:

name	type	description	required
collect_identifier	string	The collect ID. See Collect ID description	true
crs	string	The CRS of the output image. i.e., "UTM", "EPSG:4326" etc... See CRS description	true

For constructing a valid service url with this function and desired parameters please see our URL Formation doc.

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Function: ndvi_colorized

Description: The ndvi_colorized function performs dynamic range adjustments on the floating point NDVI image to return an 8-bit RGB image. NDVI is computed with the following band math: (nir1-red)/(nir1+red). All bands are atmospherically corrected for true surface reflectance prior to this computation.

Function Parameters:

name	type	description	required
collect_identifier	string	Te collect ID. See Collect ID description	true
crs	string	The CRS of the output image. i.e., "UTM", "EPSG:4326" etc... See CRS description	true

For constructing a valid service url with this function and desired parameters please see our URL Formation doc.

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