GPT Error: ProductSet-Reader - please add a source product

Microwave Toolbox
#1

Hi,

I’ve found a problem with GPT and I’m not sure if it’s being dealt with yet but I cannot find a solution on here.

I have a GPT that includes ProductSet-Reader > SliceAssembly > Write (attached)

This has been working for me for products in 2015/2016/2017, but when I come to use products from 2018, the ProductSet-Reader appears to throw an error (attached)

I have been working on this problem for over 3 days now only to find it seems to be related to handling of the current Sentiel-1 GRD products.

Can anyone tell me what the problem is and what I should do?

Thanks,

Katy

slice_error
slice_error.jpg784×1057 200 KB

GPT-slice-assembly
GPT-slice-assembly.png617×526 76.5 KB

1 Like
#2

<graph id=”Graph”>

<version>1.0 </version>

<node id = “ProductSet – Reader”>

<operator> Product Set- Reader</operator>

<sources/>

<parameters class= “com.bc.ceres.binding.dom.XppDomElement”>

<fileList>${indir}</fileList>

</parameters>

</node>

<node id=”Slice Assembly”>

<operator> “SliceAssembly”</operator>

<sources>

<sourceProduct.2 refid=”ProductSat-Reader”/>

<sources>

<sourceProduct>

<Sources>

<parametersclass=com.bc.ceres.binding.dom.XppDomElement”>

<selectedPolarisations>$

{polarization} <selectedPolarisations>

,/parameters>

</node>

<node id = “Write </operator>

<sources> <sourceProduct refid- “SliceAssembly”/>

</sources>

<parameters class = “com.bc.Ceres.binding.;dom.XppDomElement”>

<file>${output}</ffile>

<formatName>GeoTIFF-BigTIFF</formatName>

<parameters>

</node>

</graph>

#3

I wrote out the code in long hand. The file capture was in Win so I have to go look with linux toolbar, but I think it was a class
define at “Slice Assembly”

In my copy I noticed a comma *typo.
M.

#4

Hi,

Thanks so much for replying.
I dont understand from your post what you think the problem is, could you explain this to me please.
My code works for products taken before 2018 but not after.

I looked at your code and it is exactly the same as mine, although there are a lot of typos in it so I cant work out if any changes are true or not.

Thanks,
Katy

#5

@lveci this could be related to the IPF-update.

#6

Are you using the latest updates 6.0.4? What products are inside $indir?

#7

@lveci
I tried it with SNAP 5.0.0, 6.0.0 and 6.0.4. I get the same problem with all of these versions.

The products I used inside $indir that didn’t work were these:
S1A_IW_GRDH_1SDV_20180911T045738_20180911T045806_023646_0293B6_B844
S1A_IW_GRDH_1SDV_20180911T045713_20180911T045738_023646_0293B6_686E

#8

Have you tried doing all processing in the internal BEAM-DIMAP format and exporting into GeoTIFF in a separate step? That is the recommended way of using SNAP as other formats can cause strange issues…

#9

Just tried swapping GeoTIFF-BigTIFF for BEAM-DIMAP - same problem with the product set reader:

Error: [NodeId: ProductSet-Reader] Please add a source product

#10

@mengdahl @lveci any additional ideas at all? I wonder if anyone else is able to perform this process with products from April 2018+

Thanks in advance,
Katy

#11

Hi Katy, due to the IPF change to 2.90 you must first run ThermalNoiseRemoval before SliceAssembly. Hopefully it helps :slight_smile:

#12

Thankyou for the tip!

I am having trouble using the slice assembly step on tiff files though both in the GUI and in command line. I am getting a ‘java lang null pointer exception’ each time.

If I output the thermal noise removed file as a .dim instead then I get a 'I/O error while reading tie-point grid ‘latitude’

Any ideas?

Thanks

#14

Doesn’t look like you’re actually inputting a product, that’s why it isn’t reading it. Assuming ‘split’ is a directory? you may have to put a ‘/’ on the end and explicitly write the file name e.g.

/home/rus/Desktop/shared/Training/IMAGE-2017/split/*.SAFE/manifest.safe