| MOVAV | Perform a moving average of data indexed by xvals. Supports use of a moving non-rectangular window. Can be used to resample a data matrix. |
| Usage: | >> [outdata,outx] = movav(data,xvals,xwidth,xadv,firstx,lastx,xwin); |
| Inputs: | |
data |
input data (chans,frames) |
xvals |
index for each data frame (column) {def|0 -> 1:frames} Note that default is fastest, assumes equal x-spacing. |
xwidth |
smoothing-window width in xvals {def|0 -> (lastx-firstx)/4} |
xadv |
xvals step size {default|0 -> 1} Note that to reduce yyy frames to xxx, use yyy/(xxx+2) |
firstx |
low xval of first averaging window {def|0 -> low xvals} |
lastx |
high xval of last averaging window {def|0 -> high xvals} |
xwin |
vector of window values {def|0 -> ones() = square window} May be long; linear interp. is NOT used between values. An example is >> gauss(1001,2) -> [0.018 ... 1.0 ... 0.018] |
| Outputs: | |
outdata |
smoothed data (chans, |
outx |
xval midpoints of successive output data windows |
| Author: | Scott Makeig, SCCN/INC/UCSD, La Jolla, 10-25-97 |