Sen2Cor and Snappy

Optical Toolbox sen2cor
#21

I’m not sure. There is the new version 2.4.0 which shall come today. Maybe along with the SNAP BETA 6 it might work.

I think @ramona_manda or @umwilm can say more about it .

#22

Hello,

I have just tested the Sen2Cor with snappy, I have currently Sen2Cor 2.3.1 and SNAP 6.0 beta. For me it works, please find the code:

import datetime
import numpy
from snappy import ProductData
from snappy import GPF
from snappy import HashMap

def readProduct(path, formatName=None):
from snappy import (File, ProductIO)
productFile = File(path)
if formatName is None:
return ProductIO.readProduct(productFile)
else:
reader = ProductIO.getProductReader(formatName)
return reader.readProductNodes(productFile, None)

parameters = HashMap()
parameters.put(‘resolution’, “20”)
L2A_image = GPF.createProduct(‘Sen2Cor’, parameters, readProduct(“D:\temp\a.jp2”))

Let me know if you have any problems with this code.

Sen2Cor and snappy : a safe step by step procedure for proper installation
#23

This does not work anymore with Snap 7.0 and Sen2Cor 2.8
Everything done well, and tool manager set properly.
However it is not installed in python lib.

parameters = HashMap()
parameters.put(‘resolution’, ‘All’)
parameters.put(‘aerosol’, ‘MARITIME’)
parameters.put(‘ozone’, 0)
s2a_s2c = GPF.createProduct(‘Sen2Cor’, parameters, source)

RuntimeErrorTraceback (most recent call last)
in ()
7 parameters.put(‘aerosol’, ‘MARITIME’)
8 parameters.put(‘ozone’, 0)
----> 9 s2a_s2c = GPF.createProduct(‘Sen2Cor’, parameters, source)

RuntimeError: org.esa.snap.core.gpf.OperatorException: Unknown operator ‘Sen2Cor’. Is the name correctly spelled?

This is probably due to the existence of two versions 280 and 255. I tried different spelling like Sen2Cor280 but to no avail.

Otherwise gpt -h Sen2Cor280 works fine. (I only have 280 version installed). So we’re back to this previous solution of going through gpt command line.

#24

milkabe’s code worked for me with minor tweaks to satisfy operator ToolAdapterOp

parameters = HashMap()
parameters.put(‘resolution’, ‘ALL') # was 'All'
parameters.put(‘aerosol’, ‘MARITIME’)
parameters.put(‘ozone’, '0') # was 0

I think the operator name in createProduct should be identical to Alias in Tools -> Manage External Tools -> Alias (in the SNAP GUI)
Edit: A list of all available opreators is available running gpt -h

# see ramona_manda's code above for a better implementations
source = snappy.ProductIO.readProduct(path_to_product) 
s2a_s2c = GPF.createProduct(‘Sen2Cor280’, parameters, source) # was Sen2Cor