2

I am working with a Sentinel 1 SLC IW image (VV+VH) and trying to calibrate the data in the SNAP toolbox. However, it keeps returning the error "cannot construct data buffer"

Does anyone have any idea why this might be happening?

  • This error is likely caused by insufficient amounts of RAM. What are the details of the machine you are running SNAP on? – Kersten Apr 25 '16 at 9:29
  • Thanks for your answer. My computer has 16GB RAM and is a 64-bit operating system. It is built for handling GIS and remote sensing data so this is why I was surprised. – J Clifford Apr 25 '16 at 9:34
  • Can you please include your SNAP configuration? e.g. how many RAM is used by the VM, how many paralell threads, etc. – Kersten Apr 25 '16 at 10:13
1

As mentioned the error is due to RAM but not the system RAM, the available RAM for SNAP. you can change the configuration in the snappy.ini file located in the snappy folder. and increase available RAM Change the line

java_max_mem: 4G

to e.g.
java_max_mem: 6G
A recommended value is 70%-80% of the available RAM in your system.

see: http://forum.step.esa.int/t/increase-snappy-memory-beginner/6269

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.