3.2. - gd get data
gd
gd mode [filename] [+skip] [=total] [&] [@]
or
gd . [+skip] [=total] [&] [@]
Using
get data
and its various modes, you can enter data points
from the keyboard, read data points from
ASCII
files, modify
points in memory using the interactive editor, digitize points from
the pen plotter or perform one of several other data manipulations.
Up to 65,536 points can be obtained, although mode 7 will only manipulate
the points resident in memory.
The number of in-memory points is user
configurable in the site-initialization file (see Appendix A).
Also,
modes 11, 12 and 14 allow an unlimited number of points to be plotted.
If no arguments are entered with the command, you will be prompted
with a list of the 15 modes for generating or altering data.
When
appropriate, you also will be prompted for a file name.
If a file name is specified and it is not in the current directory,
C-PLOT will look for the file in the directory
specified by the environment variable,
CPLOT_GD_DIR .
That directory
can also be set with
set gd_dir
(see Chapter 6).
CPLOT_GD_DIR may contain a colon-separated list of directories, in which case C-PLOT
will look for the file in each directory in turn.
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