1G3DATA(1)                                                            G3DATA(1)
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NAME

6       g3data - A tool for extracting data from graphs.
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SYNOPSIS

9       g3data  [  -max  x  y ] [ -scale factor ] [ -coords llx lly rux ruy ] [
10       -errors ] [ -lnx ] [ -lny ] [ filename(s) ... ]
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DESCRIPTION

14       g3data is a tool for extracting data from scanned  graphs.  For  graphs
15       published in scientific articles the actual data is usually not explic‐
16       itly given ; g3data makes the process of extracting this data easy.
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OPTIONS

19       -max x y
20              If picture is larger x-wise than x or y-wise than y, the picture
21              is  scaled  down  accordingly  otherwise  this  parameter has no
22              effect.
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24       -scale factor
25              Scales the picture size  by  factor.  This  parameter  nullifies
26              effect of the -max parameter.
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28       -coords llx lly rux ruy
29              Preset  the  coordinates  of  the left lower (ll) corner and the
30              right upper (ru) corner.
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32       -errors
33              Print out the error of the x value in column 3 and the error  of
34              y value in column 4 of the output.
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36       -lnx   Use logarithmic scale for x coordinates.
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38       -lny   Use logarithmic scale for y coordinates.
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40       filename(s) ...
41              The  filename(s)  of the image(s) to open.  Supported image for‐
42              mats: PNG, XPM, JPEG, TIFF, PNM, RAS, BMP and GIF.
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USAGE

45       g3data -scale 2 -errors test1.png
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47       g3data -scale 2 -lny -errors test2.png
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BUGS

50       None known.
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AUTHOR

53       Jonas Frantz <jonas.frantz@welho.com>
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57g3data 1.5.1                     18 April 2007                       G3DATA(1)