Bad reprojection

jaipipor · September 25, 2015, 1:54pm

Dear users and developers,
the SNAP 2.0-beta-07 fails to reproject an OLCI L2 (water) image. I tried with an image from the test dataset developed by Acri. Any hints or news?
Thanks,
Jaime,

marpet · September 28, 2015, 6:56am

Hi, what is the error you observe? What type of reprojection have you done? Are you using the test dataset provided on this page?

jaipipor · September 28, 2015, 8:22am

This is what comes out.

Thanks,
Jaime.

marpet · September 28, 2015, 8:30am

You are not using SNAP 2.0-beta-07 in this screenshot

.

jaipipor · September 28, 2015, 8:38am

Now.

marpet · September 28, 2015, 9:22am

The problem here is not SNAP but the testdata. The geo-referencing is not meaningful in the source product.

marpet · September 29, 2015, 7:58am

we found out that you can fix this problem in two different ways.

Open the xfdumanifest.xml in a text editor and search for the line containing <olci:rowsPerTiePoint>. Change the value to 1.
Before opening a product open the the options dialog (Tools–>Options) in SNAP. Choose the S3TBX tab here and enable the option ‘Read Sentinel-3 OLCI products with per-pixel geo-coding’

Both options work for most products of the TDS. However I found at least one product S3A_OL_2_WRR____20080802T095919_20080802T104312_20150703T115013_2632_070_466______MAR_D_NT_001.SEN3 where it is not working.

An update of the TDS is planned as soon as possible.

jaipipor · September 29, 2015, 8:47am

Thank you for your help.
We are actually in contact with Acri, as we are expected to provide operational OLCI water products.

Best,
Jaime.

TonioF · December 3, 2015, 2:08pm

For more information on this issue and how to reproject the TDS please see Updated OLCI test data set