Move the contents of a ppm file to another ppm file

[Rachid88]

Hi there,
I would like to send a ppm image that is located in an input file, to another output ppm file.
And would like to have access to the pixels of the output file so i can change its reslution.
Any sample suggestion will be very appreciated. Thanks

[keskiverto]

You want to resize a bitmap image. I would use something like GraphicsMagick http://www.graphicsmagick.org/

It can convert from one size to another: http://www.graphicsmagick.org/convert.html