Snappy sentinel2 SNAP 6.0

development python
#1

I download the sentinel2 from copernicus esa or https://scihub.copernicus.eu/dhus/#/home. I am trying to read sentinel2 using snappy by reading the files first, but there is some error like this :

C:\Python34\python.exe
Python 3.4.4 (v3.4.4:737efcadf5a6, Dec 20 2015, 20:20:57) [MSC v.1600 64 bit (AMD64)] on win32
Type “help”, “copyright”, “credits” or “license” for more information.

from snappy import ProductIO
INFO: org.esa.snap.core.gpf.operators.tooladapter.ToolAdapterIO: Initializing external tool adapters

from snappy import GPF
from snappy import jpy
_path1 = “F:\Sentinel data\S2A\1.S2A_OPER_PRD_MSIL1C\2018\20180901\S2A_MSIL1C_20180901T023551_N0206_R089_T49MEN_20180901T061117.zip”
sentinel1 = ProductIO.readProduct(path1)
Traceback (most recent call last):
File “”, line 1, in
NameError: name ‘path1’ is not defined

sentinel1 = ProductIO.readProduct(_path1)
Traceback (most recent call last):
File “”, line 1, in
RuntimeError: java.io.FileNotFoundException: File not found: F:\Sentinel data\S2A.S2A_OPER_PRD_MSIL1C\x818\x8180901\S2A_MSIL1C_20180901T023551_N0206_R089_T49MEN_20180901T061117.zip

This product Is read using zip files. anyone can help? and also guidance step for sentinel2 imagery after reading the image whether need sen2cor or not? thank you.

1 Like
#2

You should correct the path.
Either use slashes ‘/’ in your or put r in front of the string

r"F:\Sentinel data\S2A\1.S2A_OPER_PRD_MSIL1C\2018\20180901\S2A_MSIL1C_20180901T023551_N0206_R089_T49MEN_20180901T061117.zip"

In your case, the ‘\1’ was replaced. The same for ‘\2’. A backslash in combination with certain characters has special meanings.
With the prepended r the backslash is interpreted as a backslash.

1 Like
#3

thank you for your help. It manages using slashes ‘/’. I thought it is python format.