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Basic Information on xcorr
Task: xcorr
Purpose: Cross correlate columns in ascii files.
Categories: analysis
XCORR is a Miriad task to cross correlate columns in ascii files.
Print average and rms for each column and the correlation matrix.
Write the cross correlation functions to output file.
Key: in
Input filename of ascii data.
Lines begining with "#" are not used.
Default is a pill box 3 rows wide and shifted by 10 rows.
Key: out
Output filename for cross correlation functions.
Default none.
Key: nrow
Number of rows, same as number of points in FFT .
Must be power of 2 only if correlation functions are written.
Maximum 4096. Default 32.
Key: ncol
Number of columns to cross correlate.
Maximum 16. Default 2.
Key: refcol
Refererence column for cross correlation.
Default 1.
Key: device
Standard PGPLOT device, to plot correlation functions.
Default is no plot.
Key: nxy
Number of plots in the x and y directions.
The default selects something reasonable.
Key: xrange
The min and max range along the x axis of the plots. The default
is to autoscale.
Key: yrange
The min and max range along the y axis of the plots. The default
is to autoscale.
Key: options
This gives extra processing options. Several options can be given,
each separated by commas. They may be abbreivated to the minimum
needed to avoid ambiguity. Possible options are:
'linfit' Fit and remove slope and offset from data.