Add --resize option to rasextract

[waveform80]

Now that --interpolate allows manual selection of the interpolation algorithm it would make sense to add an option to specify resizing of the main image (not the "page" size though - that would be way too tricky). Short version -r, long version --resize.

The option could allow either a single number to specified (which could be used as a multiplier for the native image size), or two numbers for an explicit size. Might also be possible to allow a single coordinate to be specified in order to indicate a requested horizontal or vertical image size. For example:

• -r 2 = double the original image size
• -r 800,600 = output image with a resolution of 800x600 regardless of original aspect ratio
• -r 800, = output image with width 800 and a height matching original aspect ratio
• -r ,600 = output image with height 600 and a width matching original aspect ratio

[waveform80]

Imported from trac issue 6. Created by dave on 2012-03-28T19:41:48, last modified: 2012-06-25T20:22:58

[waveform80]

Trac comment by dave on 2012-06-25 14:24:01:

Implemented in r127 - needs testing

[waveform80]

Trac comment by dave on 2012-06-25 20:22:58:

Tested - works well