NAME
g3data — A tool for extracting data from graphs.
SYNOPSIS
g3data [-max x y] [-scale factor] [-coords llx lly rux ruy]
[-errors] [-lnx] [-lny] [filename(s) ...]
DESCRIPTION
2001-01-01;
g3data is a tool for extracting data from scanned graphs. For graphs
published in scientific articles the actual data is usually not
explicitly given ; g3data makes the process of extracting this data
easy.
OPTIONS
-max x y If picture is larger x-wise than x or y-wise than y, the
picture is scaled down accordingly otherwise this parameter
has no effect.
-scale factor
Scales the picture size by factor. This parameter nullifies
effect of the -max parameter.
-coords llx lly rux ruy
Preset the coordinates of the left lower (ll) corner and the
right upper (ru) corner.
-errors Print out the error of the x value in column 3 and the error
of y value in column 4 of the output.
-lnx Use logarithmic scale for x coordinates.
-lny Use logarithmic scale for y coordinates.
filename(s) ...
The filename(s) of the image(s) to open. Supported image
formats: PNG, XPM, JPEG, TIFF, PNM, RAS, BMP and GIF.
USAGE
g3data -scale 2 -errors test1.png
g3data -scale 2 -lny -errors test2.png
BUGS
None known.
AUTHOR
Jonas Frantz jonas.frantz@welho.com
g3data (1)