./guide
decimate.pro

Last modification date:

Wed Sep 28 13:27:08 2016

decimate

procedure decimate[, nchan], [startat=integer], [buffer=buffer], [ok=variable]

This procedure thins the spectrum at the primary data container (the PDC, buffer 0) by selecting out and keeping the data at every nth channel. This can also operate on other buffers.

The frequency interval and reference channel are adjusted appropriately so that the x-axis labels for the decimated data are still appropriate.

This can not be used on continuum data containers.

Examples

    getrec,1
    show
    decimate,2
    show
    decimate,3,startat=1
    show
    decimate,2,buffer=1
    show, 1
 

Uses

dcdecimate show

Version

$Id$

Parameters
nchan in, optional integer (def. 2)	Thin the spectrum by keeping the value at every nchan channels starting from the startat channel This defaults to 2.

Keywords
startat in, optional integer (def. 0)	The starting channel. This defaults to 0.
buffer in, optional buffer (def. 0)	The buffer to decimate. This defaults to buffer 0 (the PDC).
ok out, optional variable	Returns 1 if everything went ok, 0 if it did not (invalid or empty dc at buffer).