ECW on mapserver4.6

Yewondwossen Assefa assefa at DMSOLUTIONS.CA
Fri Nov 18 07:22:18 PST 2005


What version should be used ?

  I am using binaries from:
ECW JPEG 2000 SDK Release Candidate 1
Version 3.1
Date : 18-02-2005

  I just cheked at ermapper site and the one available is still a 
Release candiate 1 :

ECW JPEG 2000 SDK Release Candidate 1
Version 3.1
Date : 06-04-2005


There is also a download for source code so I am wondering if I should 
consider building the binaries myself.
   I am upgrading to the latest one for now.

Later,

Frank Warmerdam wrote:
> On 11/18/05, almudena rueda <almudenarueda at inicia.es> wrote:
> 
>>Hello Frank
>>I've been doing some test on my ecw data and i've notice that the problem (i
>>think) is the gdal library. It works well if i just use a frew ecw files
>>with a size of aprox. 5 mb, but when i try to view all my ecw files (i have
>>8) it crashes.
>>here is the crash (debug with microsoft c++ compiler):
>>Unhandled exception in php.exe (NTDLL.DLL): 0xc0000005 Access violation
>>and the stack:
>>NTDLL! 77f430fd()
>>GDAL13! 011d8260()
>>GDAL13! 00fbd3b2()
>>GDAL13! 00f1e90f()
>>PHP_MAPSCRIPT_46! 00bf5329()
>>PHP_MAPSCRIPT_46! 00bebd2e()
>>PHP_MAPSCRIPT_46! 00bea870()
>>PHP_MAPSCRIPT_46! 00be9a92()
>>PHP_MAPSCRIPT_46! 00c04426()
>>PHP_MAPSCRIPT_46! 00c04894()
>>PHP_MAPSCRIPT_46! 00baa5cc()
>>PHP_MAPSCRIPT_46! 00b99508()
>>PHP4TS! 100e4147()
>>I've made a .map file with one of my ecw files that is load 8 times so, if
>>you don't mind, you can take a look on it.
> 
> 
> Almudena,
> 
> I tried this with the FWTools linux version of mapserver and
> was able to render it fine.  However, loading and browsing
> the file in OpenEV resulted in a crash in the ECW library
> after a partial load.
> 
> I tried rendering it with the FWTools windows version with
> no problem.  Loading and browsing in OpenEV also worked
> fine.
> 
> I presume you are using binaries from DM Solutions?  It may
> be that they need to upgrade to more recent ECW (and/or GDAL?)
> libraries to get around this problem.   I'm sorry I can't provide
> anything more concrete.
> 
> Best regards,
> --
> ---------------------------------------+--------------------------------------
> I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
> 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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Assefa Yewondwossen
Software Analyst

Email: assefa at dmsolutions.ca
http://www.dmsolutions.ca/

Phone: (613) 565-5056 (ext 14)
Fax:   (613) 565-0925
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