www.schorsch.com
| gcomp - do computations on a graph file. |
| gcomp [ -amilh ][ +variable value .. ][ file .. ] |
| 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. |
| 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
|
| Greg Ward |
| Only the y values can be used for computation. |
| bgraph(1), calc(1), dgraph(1), igraph(1) |