Hi everyone!
I encountered a problem while attempting to use the get_samples method of the Imagery Layer from the Python API.
I accessed the Landsat Imagery layer, applied the NDVI raster function, but the get_samples method does not return the correct values.
This is the code
import arcgis
from arcgis.raster.functions import *
from arcgis.geocoding import geocode
## skipped connection lines
# access Landsat Imagery
landsat_item = gis.content.search('Multispectral Landsat', 'Imagery Layer', outside_org=True)[0]
landsat = landsat_item.layers[0]
# Create geometry
area = geocode('Bucharest, RO', out_sr=landsat.properties.spatialReference)[0]
geom = arcgis.geometry.Geometry(area['extent'])
# Get samples
ndvi_lyr = ndvi(landsat, '5 4')
sam = ndvi_lyr.get_samples(geom, sample_count=1)
sam[0]['value'] # get only the pixel values
The output is:
'1405 1198 1012 927 1367 1146 857 9 2720'
I expected to get the values as NDVI values (-1 to +1 interval), not unprocessed data.
Am I doing something wrong?
Thanks for any help,
Alin
