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ssplot - single subject plot of ERP data
ssplot plot_device
filelist -chan chan -bins bin1 [bin2 bin3 ...] [options]
ssplot
plots to plot_device one page containing plots for the specified chan and
bin(s) for each of the ERP average files specified in filelist. This might
be useful, for example, when seeing something interesting in one of the
channels of a 26 channel plot of a grand average, and then wanting to see
that single channel plotted for each of the individual subjects to get
an indication of variability.
plot_device is any of the plot devices that
can be used by the ploterps(1)
program (i.e. xwin, fortel, etc.). filelist
is an ascii text file that lists ERP average files, one per line, typically
(but not necessarily) with the grand average at the top and subject averages
below. Channel, bin, and experiment descriptions for the plot are taken
from the first file in the list.
ssplot uses ploterps(1)
to create temporary
’save’ file plots for each average file and finally uses multiplot(1)
to
plot all the saved files on one page.
The options are identical
in function to their ploterps(1)
counterparts:
- -baseline start stop
- Specifies
the beginning and ending latencies (in ms relative to stimulus onset) for
the interval used to determine the baseline voltage for each plot. The
default is to baseline using the presampling period to calculate the baseline
voltage.
- -nobaseline
- Specifies to not subtract a baseline voltage from the
data before plotting.
- -scale uVolts
- Specifies the scaling to be applied to
the data. uVolts is a floating point number which specifies the number
of microvolts to span one half of the vertical space allotted to each data
trace.
- -filter filtertype cutoff [cutoff]
- Filter the data before plotting
it. filtertype may be "lp" for lowpass, "hp" for highpass, or "bp" for
bandpass. cutoff is the cutoff frequency to use for the filter. If a bandpass
filter is used, both a low and high cutoff frequency must be specified.
- -timewindow start_time end_time
- Specifies the epoch start and end times
(in ms).
/usr/local/erp/lib/graphicdevs
ploterps(1)
, multiplot(1)
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