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By ``one dimensional data'' we mean any distribution of (X,Y) data points.
This obviously includes functions Y=f(X) and X=f(Y), but also more general
cases. Plotting such kind of data is the simplest thing GREG can do.
This can be done basically in four modes :
- The broken line mode using command CONNECT, in which data
points are simply connected by straight lines. Note that data must be
ordered.
- The curve mode using command CURVE, in which the data is
interpolated to produce a smooth aspect. Again, the data must be
adequately sorted.
- The histogram mode using command HISTOGRAM. As above, data must
be ordered. Note that this capability is restricted to functions Y=f(X).
- The marker mode using command POINTS, in which a graphic marker
is plotted at each data point. The size of the markers may depend on
values in the Z buffer. Contrary to the other commands, the data need not
be ordered at all.
In addition to these four commands, the command ERRORBAR which uses
the Z buffer to define errors may also be relevant to one-dimensional data.
A facility to sort data by ascending order is given by means of command
SORT.
All these commands belong to the so-called ``GREG1'' language (in the SIC
meaning) ; this language also includes all the utility functions of GREG
such as pen definitions, annotations, coordinate conversions, etc...
Next: GREG2 : Two Dimensional
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2024-03-29