Save Vector training samples - SNAP-8

s2tbx
#1

Hello, I would like to create thematic map from 4 thematic classes using Random Forest
Classifier. I’m trying to create vector sample data in a Sentinel-2 image but even if I saved the image when I reopen it the Vector Data doesn’t contain the samples.
Please see the attached image. It illustrates the samples that I have collected (if I close and reopen the image the vector data disappears).

Training_samples
Training_samples1093×635 217 KB

I’m using SNAP 8, win 10.
Thanks in advance

#2

This might be the same underlying bug as SNAP 8 - cannot save vectors in dim. Are you saving
to dim format? Have you install the 8.0.1 updates?

#3

Thanks for the promptly respond.
Yes, I have the last version 8.0.1 and also the image is in dim format.
When I’m trying to open the image with the saved vector training data I get an error message
about the “unknown vector geometry”. The training samples doesn’t exist in the “Vector Data”.
Please see the attached image.

vector_data_issues
vector_data_issues1202×634 203 KB

Regards

#4

this is currently a bug since SNAP 8. We are aware of this malfunction and work on a solution.

#5

Thanks for the reply.
Also, it will be useful if the classification procedure (supervised Classification) took place without the need for reprojection in WGS84.
Regards

#6

The issue should be solved with the 8.0.2 update of SNAP.
[SNAP-1369] Vector data cannot be restored from BEAM-DIMAP