[Mapserver-users] 3.7 nightly and python/mapscript errors

[Sean Gillies]

Jerritt,

saveImage() is long gone from the nightly MapScript.  Use save().
Your script then would be something like:

   #!/usr/bin/python2.1

   import mapscript

   def drawmap():
       mymap = mapscript.mapObj("/usr/lib/cgi-bin/maps/europe.map")
       mymap.width=600
       mymap.height=400
       myimage=mymap.draw()

       # Just specify filename as argument to 'save', all other
       # parameters come from the map's outputformat
       save_result = myimage.save("euro.png")

       # The Python way would be to raise an error instead of
       # returning a value
       if not save_result == mapscript.MS_SUCCESS:
           raise IOError, "Could not save to euro.png in drawmap()"

     drawmap()

Take a look at the latest (3.7) documentation regarding map
outputformats and you'll see how to set the transparency and
such to suit your needs.

Also, don't forget that the Python MapScript has a saveToString()
method which Perl has not.  Comes in handy when you'd like to
have image data in memory rather than on disk.

   image_string = myimage.saveToString()

cheers,
Sean


On Monday, April 14, 2003, at 07:04  PM, Jerritt Collord wrote:

>
> SWIG stuff I wouldn't know where to start tracking down! The mapfile
> should be fine--I use it in all other interfaces okay--and it doesn't
> smell like that kind of problem.
>
> Thanks,
>
> Jerritt
>
> gurgle:/usr/lib/cgi-bin# ./testpy.py
> Traceback (most recent call last):
>   File "./testpy.py", line 14, in ?
>     drawmap()
>   File "./testpy.py", line 11, in drawmap
>     out = myimage.saveImage("euro.png",MS_PNG,50,0,50)
>   File "/usr/lib/python2.1/site-packages/mapscript.py", line 1770, in
> <lambda>    __getattr__ = lambda self, name: _swig_getattr(self,
> imageObj, name)  File "/usr/lib/python2.1/site-packages/mapscript.py",
> line 19, in _swig_getattr    raise AttributeError,name
> AttributeError: saveImage
>
> gurgle:/usr/lib/cgi-bin# cat testpy.py
> #!/usr/bin/python2.1
> import mapscript
> def drawmap():
>  mymap = mapscript.mapObj("/usr/lib/cgi-bin/maps/europe.map")
>  mymap.width=600
>  mymap.height=400
>  myimage=mymap.draw()
>  out = myimage.saveImage("euro.png",MS_PNG,50,0,50)
>  return out
> drawmap()
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>
>
--
Sean Gillies
sgillies at frii.com
http://www.frii.com/~sgillies