Mapserver response

[Norman Barker]

-----Original Message-----
From: Frank Warmerdam [mailto:fwarmerdam at gmail.com]
Sent: Fri 5/13/2005 3:07 PM
To: Norman Barker
Cc: MAPSERVER-USERS at lists.umn.edu
Subject: Re: [UMN_MAPSERVER-USERS] Mapserver response
 
On 5/13/05, Norman Barker <nbarker at rsinc.com> wrote:
> Thanks Frank,
> 
> I was trying to find a way to force a file through MapServer WCS because of bug 1183, it works with some
> files (with square resolution), but not others hence the question.
> 
> Would there be a way to specify a 'RAW' extension to MapServer WCS to retrieve the base file unaltered?  I am thinking in particular of retrieving data with custom geotiff tags, or say a Jpeg2000 file with custom XML inside it?

Norman, 

I don't forsee supporting a raw mode which literally returns the original
file since it is quite out-of-band for mapserver.  However, I have been
thinking that for WCS mode it would be nice if we could have some way
of returning various kinds of metadata associated with the source file
when serving via WCS.  This would likely only make sense for
layers that are not tileindexed.  Perhaps a PROCESSING directive
on the layer that would indicate what sorts of metadata to carry over
to the result file.  

Of course, it would at best likely be constrained by the metadata
model of GDAL.  

I have no concrete plans to add such a feature but I think it is worth
further discussion about the sorts of things we would want to carry over.
 
> Any thing we can do to help with the WCS resolution/reprojection bug please let us know.

I dug into and closed the bug yesterday.  Perhaps it was using an 
old email address for you, so you didn't get the notification?  The
overall result was that you were missing a PROJECTION block 
on your raster layer, so anything going through the warp/resampler
was just not acting. 

Hi Frank,

A Processing directive would be a really cool idea!  I can see that we could preserve metadata in JPEG2000
that way, and also allow custom tags.  Could it be opened up to include hooks to image processing as well?
Then you would have remote subsetting and processing in one (or perhaps I am getting carried away!! :-))

Many thanks for closing the bug, I have moved jobs to RSI hence the change in email.  I am using the FWTools version of MapServer but I will take the nightly source and build it asap.

Many thanks,

Norman Barker


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