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