PERL interface trouble

[Steve Lime]

You can get at the MapServer error stack with a call like:

  my $map = new mapscript::mapObj( $mapfile ) or mapscript::msGetErrorString("\n");

That may help, or be something to try. I use perl MapScript with 4.8 and the CVS version all the time with good results.

Steve

>>> Joseph Bussell <joe at OTSYS.COM> 6/30/2006 2:09:06 PM >>>
Does anyone use the latest code with PERL Mapscript?  If shp2img works 
with my mapfile, is there anything else I can do to understand why my 
new call for the mapObj fails?

Joe Bussell
On Time Systems


Joseph Bussell wrote:

> I have verified that shp2img constructs an image that derives form my 
> mapfile.  This part looks good.  My mapscript code was written for 
> 4.4.2, but the one function that is failing does not appear to have 
> significantly changed.  I am not getting past construction of the 
> basic mapObj from the mapfile.  Specifically, the call to :
>
> my $map = new mapscript::mapObj( $mapfile ) or  carp "Could not create 
> mapscript object from mapfile: $mapfile";
>
> produces the error message.  I also went into mapscript.pm and added 
> debug code there to be sure I was using the correct module.  The low 
> level call is producing an unusable result.
> Joe Bussell
> On Time Systems
>
>
> Stephen Woodbridge wrote:
>
>> Hi Joe,
>>
>> A couple of things.
>>
>> 1) what version does you existing code work on?
>> 2) There are probably two areas that you will need to change
>>    a) the mapfile
>>    b) the perl
>>
>> I would start with using shp2img to make sure you mapfile can load. 
>> It will at least print errors that you can read.
>>
>> shp2img -m /path/to/file.map -o junk.png ...
>>
>> Once you can get an image then you will probably have more luck 
>> tracking down the various mapscript changes. These will depend on 
>> what version of mapscript your code was written for.
>>
>> -Steve W.
>>
>> Joseph Bussell wrote:
>>
>>> Greetings Listers,
>>>   It has been a while since I deployed a new Mapserver application.  
>>> I have been leaning on old source on an old box to get the work 
>>> done.  I have been given a new server to set up for our Air Force 
>>> project and have had some issues with getting my code to work.  
>>> First of all I am using Mapscript ala PERL.  I recognize that the 
>>> PERL interface has not been updated due to a lack of user interest, 
>>> but I am still partial to using it if it can still be done (mostly 
>>> since I will not have to rewrite my routing path functionality).
>>>
>>>   My problem is getting the actual mapObj to construct from my 
>>> mapfile.  I have not been able to get any debug information our by 
>>> checking /tmp/mserrors, which used to work nicely in such cases.  
>>> All I get is an undefined reference.  My code for construction is 
>>> simple:
>>>
>>> my $map = new mapscript::mapObj( $mapfile ) or  carp "Could not 
>>> create mapscript object from mapfile: $mapfile";
>>>
>>> in my httpd.conf I define
>>> MS_ERRORFILE              /tmp/mserrors.txt
>>>
>>> My mapfile exists and is very simple.
>>> I am running:
>>> CentOS release 4.3
>>> AMD64, dual core machine
>>> Apache/2.0.52
>>> mapserver-4.8.3.tar.gz
>>> perl, v5.8.5 built for x86_64-linux-thread-multi
>>>
>>> Thank you for your time.
>>>
>>> Joe Bussell
>>> On Time Systems
>>>
>>
>>
>