PERL interface trouble

[Lowell.Filak]

Joe Bussell writes: 

> Nope, same logical volume.  Identical results from `df` verify this. 
> 
> Joe Bussell
> On Time Systems 
> 
> 
> Simpson wrote: 
> 
>> Is /usr an automount? 
>> 
>> -----Original Message-----
>> From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]On
>> Behalf Of Joe Bussell
>> Sent: Wednesday, July 05, 2006 12:19 PM
>> To: MAPSERVER-USERS at LISTS.UMN.EDU
>> Subject: Re: [UMN_MAPSERVER-USERS] PERL interface trouble 
>> 
>> 
>> Thank you!  I have mode some progress.  The fact that my fonts/
>> directory was not readable escaped my notice.  The msGetErrorString
>> function provided that data right away. 
>> 
>> I have still have some undesired behavior however.  I added
>> $img->save( $outfile );
>> carp mapscript::msGetErrorString("\n");
>> And it indicates that my image file is not openable for write.  I have
>> verified that the entire directory chain indicated in the message is
>> world writable.  Is there something else that I need to do? 
>> 
>> [Mon Jul  3 15:52:17 2006] -e: Failure: msSaveImageGD(): Unable to
>> access file.
>> Unable to open file
>> /usr/routing/routes/Route1151967137028128.223.40.5.png for writing at
>> /usr/routing/perl/dwarp/mapdrawing.pm line 515 
>> 
>> I changed my write directory to be a child of /tmp, and everything
>> worked out just fine.  I verified that the directory permissions matched
>> and could not find any reference in my httpd.conf that would preclude
>> writing to a directory off of /usr.  Any ideas as to why this is? 
>> 
>> Joe Bussell
>> On Time Systems 
>> 
>>  
>> 
>> Steve Lime wrote:
>>   
>> 
>>> 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

Joe, 

Here's a late reply: 

Can you use imageObj->write vs. saving the image to see if it works?
I just cleaned up the bugzilla post for perlmapscript
(http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=1371)
with what I have.
I know it works with Perl 5.8 but I haven't tested on MS 4.8. 

Lowell