Re: [Playerstage-users] MapViewer File is not working under stage

[Brian G. <ge...@ai...>]

On Thu, 18 Nov 2004, Mark K. Kim wrote:

> There are several variations in the PNM file format.  To create the format
> that Player/Stage can understand, you should make the picture GRAYSCALE
> using a photo editing program, and when you save it tell it to save it in
> BINARY PNM format (instead of ASCII PNM format.)
>
> The magic number "P5" is the first two characters that appear in the PNM
> file.  You should be able to read it right off the top if you open the
> file with a text editor.  The file you made probably is in a different
> format (i.e., "P3".)

Stage is *very* picky about the format of the bitmap.  The easiest
way to make a bitmap that it will accept is to use Gimp.  Load the image
with Gimp, then:

   Image->Mode->Grayscale
   File->Save As...
     Determine File Type: By Extension
     (name the file <something>.pnm and hit OK)
       Data Formatting: Raw
       (hit OK)

         brian.

>
> On Thu, 18 Nov 2004, tahir yaqub wrote:
>
>> Hi guys
>> I have made a pnm file in a software called MapViewer
>> and saved in a Player/Stage format (.pnm) in this
>> software.But when I try to run stage with this file it
>> shows following message:
>>
>> "image file is of incorrect type: should be pnm,
>> binary, monochrome (magic number P5)"
>>
>> It is pnm already!!!What is the problem.?What is this
>> magic number P5?
>>
>> Thanks in advance
>> Tahir
>
>

-- 
Brian P. Gerkey                    ge...@ai...
Stanford AI Lab                    http://ai.stanford.edu/~gerkey