On 11-06-26 06:34 AM, Antonio Valentino wrote:
Hi Frank,
Il 18/06/2011 14:38, Frank Warmerdam ha scritto:
On 11-06-18 02:59 AM, Antonio Valentino wrote:
[CUT]
Palsar products are in CEOS format so IMHO it would be nice to setup a
general mechanism to decode CEOS records (a similar job has been done
for ENVISAT records recently)
[CUT]
There is already a generic SAR CEOS driver (gdal/frmts/ceos2) with a CEOS
record parsing mechanism. If that is what you want, please start from it.
For reasons not immediately obvious to me Phil chose to build a specific
JAXA Palsar driver but please think twice before building it out into a
full
generic CEOS driver duplicating what already exists.
Looking deeper into the ceos2 code it seems to me that the "recipe" for
decoding ALOS-PALSAR products do not match at all specifications I can
find at
http://www.eorc.jaxa.jp/ALOS/en/doc/fdata/PALSAR_L10_J_ENa.zip
Does that recipe refers to another format specification document?
Antonio,
I don't know.
Also, regarding the ceos2 driver in general, I didn't find an obvious
way to support CEOS products with multiple image files (like multi
polarization PALSAR or ALOS PRISM).
Ah, that may well have been part of Phil's rationale for handling
multi-polarization data with custom drivers. I don't know how hard
it would be to do so within the existing SAR_CEOS driver.
Possibly you could set up a multi-polarization driver based on the
low level ceos2 code but with a somewhat different recipe mechanism?
Best regards,
--
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up | Frank Warmerdam, [email protected]
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush | Geospatial Programmer for Rent
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