[PYTHON IMAGE-SIG] PIL questions:

[Kent Polk]

1) Why am I having trouble saving jpegs? :

imput file type:
  File "pp2jpg.py", line 42, in ?                                      
    out.save(newfile,'JPEG')                                            
  File "/usr/local/lib/python1.4/Image.py", line 356, in save           
    SAVE[string.upper(format)](self, fp, filename)                      
  File "/usr/local/lib/python1.4/JpegImagePlugin.py", line 285, in _save
    ImageFile._save(im, fp, [("jpeg", (0,0)+im.size, 0, im.mode)])      
  File "/usr/local/lib/python1.4/ImageFile.py", line 229, in _save      
    e = _getencoder(e, b, a, im.encoderconfig)                          
  File "/usr/local/lib/python1.4/ImageFile.py", line 63, in _getencoder 
    raise IOError, "encoder %s not available" % d                       
IOError: encoder jpeg not available

or:
Traceback (innermost last):                                  
  File "pp2jpg.py", line 42, in ?                           
    out.save(newfile,'JFIF')                                 
  File "/usr/local/lib/python1.4/Image.py", line 358, in save
    raise IOError, "cannot save %s files" % v                
IOError: cannot save JFIF files

yet:
ld -G  _imagingmodule.o decode.o encode.o display.o path.o libImaging/libImaging.a /usr/local/lib/libjpeg.a /usr/local/lib/libz.a -o _imagingmodule.so

 /usr/local/lib/libjpeg.a is valid...

2) How to convert from 'RGB' (PPM 425x550) to 'P' (GIF)?

I read the point method which I presume one could use to affect
the conversion, but how does know how to build the table?

Thanks



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