Updated RFC: Raster bands interpretation specification (markdown)

Sandro Santilli 2014-07-11 07:52:17 -07:00
parent fae5b65cd3
commit 7f55caf6b9

@ -10,36 +10,45 @@ This page is an attempt to standardize bands extraction and interpretation in a
The band parameter could have the following values:
- `rgb[:<r>,<g>,<b>]`
Where <r>, <g> and <b> are integer representing 1-based band indexes.
Where `<r>`, `<g>` and `<b>` are integer representing 1-based band indexes.
- `rgb`
Same as `rgb:1,2,3`
- `rgba[:<r>,<g>,<b>,<a>]`
Where <r>, <g>, <b> and <a> are integer representing 1-based band indexes.
Where `<r>`, `<g>`, `<b>` and `<a>` are integer representing 1-based band indexes.
- `rgba`
Same as `rgba:1,2,3,4`
- `grayscale[:<n>]`
Where <n> is an integer representing 1-based band indexes.
Where `<n>` is an integer representing 1-based band indexes.
- 'grayscale'
Same as `grayscale:1`
- `data[:<n>]`
Where <n> is an integer representing 1-based band indexes.
Where `<n>` is an integer representing 1-based band indexes.
- `<n>`
Same as data:<n>
Same as `data:<n>`
This is for backward compatibility with the GDAL plugin
- `auto`
The default value, if band parameter is omitted, enables guess based on input raster:
- If the input has 3 bands, `rgb` assumed
- If the input has 4 bands, `rgba` assumed
- If the input has 1 band, `grayscale` assumed
- `-1`
Same as `auto`
This is for backward compatibility with the GDAL plugin