Iceye .tif GRD Reader in Python

Microwave Toolbox
#1

I have downloaded the “Dark Ship” data set recently released by Iceye. One of the products in it contains the following files:
ICEYE_X2_GRD_SM_3234_20190313T144753.tif
ICEYE_X2_GRD_SM_3234_20190313T144753.xml

When I try to read these in with Python, using this command:
(main)>>> from snappy import ProductIO
(main)>>> a=ProductIO.getProductReaderForInput(‘E:\Iceye\ICEYE_GRD_South_China_Sea_DarkVesselDetect\ICEYE_X2_GRD_SM_3234_20190313T144753.tif’)
The reader I get is:
(main)>>> a
org.esa.snap.core.dataio.ProductReader(objectRef=0x0000000056D6B1F8)
(main)>>> print(a)
org.esa.snap.dataio.geotiff.GeoTiffProductReader[input=null]

and I also get the following results:
(main)>>> initial_product = ProductIO.readProduct(‘E:\Iceye\ICEYE_GRD_South_China_Sea_DarkVesselDetect\ICEYE_X2_GRD_SM_3234_20190313T144753.tif’)
(main)>>> print(initial_product.getProductReader())
org.esa.snap.dataio.geotiff.GeoTiffProductReader[input=E:\Iceye\ICEYE_GRD_South_China_Sea_DarkVesselDetect\ICEYE_X2_GRD_SM_3234_20190313T144753.tif]
(main)>>> print(list(initial_product.getBandNames()))
[‘band_1’]

NOT the IceyeGRDProductReader I expect. Worse, this reader basically provides access to “band_1” as opposed to the “Amplitude_VV” and “Intensity_VV” I get when I use the SNAP GUI and specifically select ingestion of Iceye data (ie - I know the data is good and that the required readers are on my machine somewhere…).

Does anyone know what I need to change or force to get the SNAP python interface to use the correct reader? A couple of lines of Python code as an answer would be great.

#2

Hello @johnwegrzyn, I have an issue with GPT instead with the graph.xml

<node id="Read"> <operator>Read</operator> <sources/> <parameters class="com.bc.ceres.binding.dom.XppDomElement"> <file>/workspace/data/ICEYE_X2_GRD_SL_27738_20200501T073422.tif</file> <formatName>IceyeProduct</formatName> </parameters> </node>

GPT returns:

Executing processing graph SEVERE: com.iceye.esa.snap.dataio.IceyeProductReader: java.io.IOException: Cant read /workspace/data/ICEYE_X2_GRD_SL_27738_20200501T073422.tif: not a valid CDM file.

On SNAP GUI (graph builder) everything works fine.

Did you find a solution?

Maybe @ABraun can shed some light here

#3

where did you download the ICEYE tif files?

I have only tested h5 files and they work fine.

#4

These were provided to the Charter but it’s pretty much the process I found here:

Steps:

  • Open ICEYE data on SNAP by clicking Open product then browse to the place the ICEYE example dataset is stored (TIFF format)
  • Choose ICEYE Products when asked

They use the .tif format for the GRD. It works fine on the GUI (including graph builder) but not via gpt CLI

#5

it seems that this window which requires the choice for a reader when selecting a GeoTiff is not part of the GPT or python routines:

grafik

#6

Any chance to get this feature tracked as an issue on the S1TBX?

#7

sure: https://senbox.atlassian.net/projects/SITBX/issues/SITBX-786

Did I report it correctly?

#8

Thanks @ABraun!
Yes it correctly reported.
Looking forward for the solution

#9

Hello @ABraun

Any news regarding this issue? Is it part of SNAP 8?

#10

it’s still tagged as “open”, but it could be implemented in one of the irrgegular updates (independent from the version). Still, SNAP 8 is going to be released soon.

#11

Sure this is what I could see as well on JIRA.
What I’m looking for is an update on the target date for the fix and if there will be a fix

#12

I got an update on this:

since v7.04 it is possible to select the ICEYE metadata xml file to ensure there is no confusion on which reader to use.

Thanks @lveci @ABraun, much appreciated!

1 Like
#13

Sorry - Switched jobs to non-space for a while and lost access to this account. Thanks to everyone else for contributing to the conversation in my absence…