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| author | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-07-08 20:46:52 -0400 |
|---|---|---|
| committer | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-07-08 20:46:52 -0400 |
| commit | fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 (patch) | |
| tree | bdda434976bc09c864f2e4fa6f16ba1952b1e555 /sys/gio/gvline.x | |
| download | iraf-linux-fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4.tar.gz | |
Initial commit
Diffstat (limited to 'sys/gio/gvline.x')
| -rw-r--r-- | sys/gio/gvline.x | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/sys/gio/gvline.x b/sys/gio/gvline.x new file mode 100644 index 00000000..929fab44 --- /dev/null +++ b/sys/gio/gvline.x @@ -0,0 +1,23 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +# GVLINE -- Vector polyline. Draw a line connecting the points (X[i],V[i]), +# where the X[i] are evenly distributed from X1 to X2. + +procedure gvline (gp, v, npts, x1, x2) + +pointer gp # graphics descriptor +real v[ARB] # Y coordinates of the polyline +int npts # number of polyline points +real x1, x2 # range of X coordinates of the polyline + +int i +real dx + +begin + if (npts > 1) { + dx = (x2 - x1) / (npts - 1) + call gamove (gp, x1, v[1]) + do i = 2, npts + call gadraw (gp, (i-1) * dx + x1, v[i]) + } +end |