pkcreatect

NAME

pkcreatect - program to create and import colour table to GTiff image

SYNOPSIS

pkcreatect -i input -o output [-ct colortable | -min value -max value] [options] [advanced options]

DESCRIPTION

pkcreatect is a utility to include a color table to a raster dataset. You can either define an existing color table (ASCII text file) with the option -ct or define a minimum (-min) and maximum (-max) value.

OPTIONS

-i filename, --input filename

input image

-o filename, --output filename

output classification image

-ct filename, --ct filename

colour table in ASCII format having 5 columns: id R G B ALFA (0: transparent, 255: solid)

-min number, --min number

minimum value

-max number, --max number

maximum value

options
-g, --grey

grey scale

-of format, --oformat format

Output image format (see also gdal_translate(1)).

-co option, --co option

Creation option for output file. Multiple options can be specified.

-d description, --description description

Set image description

-v, --verbose

verbose

Advanced options
-l filename, --filename filename

Create legend as png file

-dim cols -dim rows, --dim cols --dim rows

number of columns and rows in legend.

EXAMPLE

Attach a color table to image with values between 0 and 50

pkcreatect -i image.tif -o image_ct.tif -min 0 -max 50

Attach a grey scale "color" table to image with values between 0 and 100 and create a legend image (annotation needs to be drawn manually)

pkcreatect -i image.tif -o image_ct.tif -min 0 -max 100 -l legend.tif -g

Attach a predefined color table to image.tif. The colortable has 5 entries for the values 0 (black), 1 (red), 2 (green), 3 (blue) and 4 (grey)

cat colortable.txt

0 0 0 0 255
1 255 0 0 255
2 0 255 0 255
3 0 0 255 255
4 100 100 100 255

pkcreatect -i image.tif -o image_ct.tif -ct colortable.txt

Remove the color table from an image

pkcreatect -i image.tif -o image_noct.tif -ct none