g3data — A tool for extracting data from
graphs.
g3data [-max x y] [-scale
factor] [-coords llx lly rux ruy]
[-errors] [-lnx] [-lny]
[filename(s) ...]
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.
- -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.
g3data -scale 2 -errors test1.png
g3data -scale 2 -lny -errors test2.png
Jonas Frantz jonas.frantz@welho.com