GCOMP(1) General Commands Manual GCOMP(1)NAME
gcomp - do computations on a graph file.
SYNOPSIS
gcomp [ -amilh ][ +variable value .. ][ file .. ]
DESCRIPTION
Gcomp reads each graph file in sequence and computes the specified calculations. The type options are as follows:
-n Print the name of each curve.
-a Print average and standard deviation of each curve.
-m Print minimum and maximum for each curve.
-i Print Romberg's approximation to the integral of each curve.
-l Print the slope, intercept, and correlation coefficient using the least squares method of linear regression.
-h Do not print a header in the output.
The calculations will be displayed as columns in the order they are specified on the command line. If no files are given, the standard
input is read.
Variables can be set explicitly with +variable value options. The only truely useful variables for this program are xmin and xmax. They
determine boundaries for the calculations.
EXAMPLE
To compute the approximate integral of sin(x)/log(x) from 2 to 4:
gcomp -i
A(x)=sin(x)/log(x);
Anpoints=100;
xmin=2;
xmax=4;
^D
AUTHOR
Greg Ward
BUGS
Only the y values can be used for computation.
SEE ALSO bgraph(1), dgraph(1), icalc(1), igraph(1)RADIANCE 6/24/98 GCOMP(1)

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DGRAPH(1) General Commands Manual DGRAPH(1)NAME
dgraph - do a set of graphs to a dumb terminal
SYNOPSIS
dgraph [ -w width ][ -l length ][ +variable value .. ][ file .. ]
DESCRIPTION
Dgraph reads each graph file in sequence and converts it to a character plot displayable on any ascii device. If no files are given, the
standard input is read.
Across the top of the plot, the extrema are printed. This is the only indication of the axis size. Curves are represented with their
respective letter ('A' for curve A, etc.) at each point. Where two or more curves cross, a number is shown instead.
The size of the output array can be specified as a certain width and length. The default size is 79 by 22.
Variables can be set explicitly with +variable value options. See bgraph(1) for details.
EXAMPLE
To get a quick glimpse of the sine function from 0 to 4.
dgraph
A(x)=sin(x)
Anpoints=100
xmin=0
xmax=4
^D
AUTHOR
Greg Ward
BUGS
There is no mechanism provided for undefining a variable.
SEE ALSO bgraph(1), gcomp(1), icalc(1), igraph(1)RADIANCE 6/24/98 DGRAPH(1)

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