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

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

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

44       g3data -scale 2 -errors test1.png
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46       g3data -scale 2 -lny -errors test2.png
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BUGS

49       None known.
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AUTHOR

52       Jonas  Frantz  <jonas.frantz@welho.com>
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56g3data 1.5.1                      2007-03-16                         G3DATA(1)