POP_CHANPLOT	Graphic user interface (GUI)-based function with plotting options for visualizing. Only channel measures (e.g., spectra, ERPs, ERSPs, ITCs) that have been computed and saved in the study EEG datasets can be visualized. These can be computed using the GUI-based pop_precomp().
Usage:	>> STUDY = pop_chanplot(STUDY, ALLEEG);
Inputs:
ALLEEG	Top-level EEGLAB vector of loaded EEG structures for the dataset(s) in the STUDY. ALLEEG for a STUDY set is typically loaded using pop_loadstudy(), or in creating a new STUDY, using pop_createstudy().
STUDY	EEGLAB STUDY set comprising some or all of the EEG datasets in ALLEEG.
Outputs:
STUDY	The input STUDY set structure modified according to specified user edits, if any. Plotted channel measure means (maps, ERSPs, etc.) are added to the STUDY structure after they are first plotted to allow quick replotting.
Graphic interface buttons:
"Select channel to plot"	[list box] Displays available channels to plot (format is 'channel name (number of channels)'). The presented channels depend s on the optional input variable 'channels'. Selecting (clicking on) a channel from the list will display the selected channel channels in the "Select channel(s) to plot" list box. Use the plotting buttons below to plot selected measures of the selected channel. Additional editing options (renaming the channel, rejecting outliers, moving channels to another channel) are also available. The option 'All N channel centroids' at the top of the list displays all the channels in the list except the 'Notchannel', 'Outlier' and 'Parentchannel' channels. Selecting this option will plot the channel centroids (i.e. ERP, ERSP, ...) in a single figure.
"Select channel(s) to plot"	[list box] Displays the ICA channels of the currently selected channel (in the "Select channel to plot" list box). Each channel has the format: 'subject name, channel index'. Multiple channels can be selected from the list. Use the plotting buttons below to plot different measures of the selected channels on different figures. Selecting the "all subjects" option is equivalent to using the channel plotting buttons. Additional editing options are reassigning the selected channels to another channel or moving them to the outlier channel.
"Plot channel properties"	[button] Displays in one figure all the mean channel measures (e.g., dipole locations, scalp maps, spectra, etc.) that were calculated and saved in the EEG datsets. If there is more than one condition, the ERP and the spectrum will have different colors for each condition. The ERSP and ITC plots will show only the first condition; clicking on the subplot will open a new figure with the different conditions displayed together. Uses the command line function std_propplot().
"Plot scalp maps"	[button] Displays the scalp maps of channel channels. If applied to a channel, scalp maps of the channel channels are plotted along with the channel mean scalp map in one figure. If "All # channel centroids" option is selected, all channel scalp map means are plotted in the same figure. If applied to channels, displays the scalp maps of the specified channel channels in separate figures. Uses the command line functions std_plotmap() and std_plotchanmap().
"Plot ERSPs"	[button] Displays the channel channel ERSPs. If applied to a channel, channel ERSPs are plotted in one figure (per condition) with the channel mean ERSP. If "All # channel centroids" option is selected, plots all average ERSPs of the channels in one figure per condition. If applied to channels, display the ERSP images of specified channel channels in separate figures, using one figure for all conditions. Uses the command line functions std_plotersp() and std_plotchannelsp().
"Plot ITCs"	[button] Same as "Plot ERSPs" but with ITC. Uses the command line functions std_plotitc() and std_plotchanitc().
"Plot dipoles"	[button] Displays the dipoles of the channel channels. If applied to a channel, plots the channel channel dipoles (in blue) plus the average channel dipole (in red). If "All # channel centroids" option is selected, all channel plots are displayed in one figure each channel in a separate subplot. If applied to channels, displays the ERSP images of the specified channel. For specific channels displays channels dipole (in blue) plus the average channel dipole (in Red) in separate figures. Uses the command line functions std_dipplot() and std_plotchandip().
"Plot spectra"	[button] Displays the channel channel spectra. If applied to a channel, displays channel spectra plus the average channel spectrum in bold. For a specific channel, displays the channel channel spectra plus the average channel spectrum (in bold) in one figure per condition. If the "All # channel centroids" option is selected, displays the average spectrum of all channels in the same figure, with spectrum for different conditions (if any) plotted in different colors. If applied to channels, displays the spectrum of specified channel channels in separate figures using one figure for all conditions. Uses the command line functions std_plotspec() and std_plotonechanpec().
"Plot ERPs"	[button] Same as "Plot spectra" but for ERPs. Uses the command line functions std_ploterp() and std_plotchannelp().
"Create new channel"	[button] Creates a new empty channel. Opens a popup window in which a name for the new channel can be entered. If no name is given the default name is 'Cls #', where '#' is the next available channel number. For changes to take place, press the popup window 'OK' button, else press the 'Cancel' button. After the empty channel is created, channels can be moved into it using, 'Reassign selected channel(s)' (see below). Uses the command line function std_createchant().
"Rename selected channel"	[button] Renames a channel using the selected (mnemonic) name. Opens a popup window in which a new name for the selected channel can be entered. For changes to take place, press the popup window 'OK' button, else press the 'Cancel' button. Uses the command line function std_renamechant().
"Reject outlier channels"	[button] rejects outlier channels to an outlier channel. Opens a popup window to specify the outlier threshold. Move outlier channels that are more than x standard deviations devs from the channel centroid to an outlier channel. For changes to take place, press the popup window 'OK' button, else press the 'Cancel' button. Uses the command line function std_rejectoutliers().
"Merge channels"	[button] Merges several channels into one channel. Opens a popup window in which the channels to merge may be specified An optional name can be given to the merged channel. If no name is given, the default name is 'Cls #', where '#' is the next available channel number. For changes to take place, press the popup window 'OK' button, else press the 'Cancel' button. Uses the command line function std_mergechant().
"Remove selected outlier channel(s)"	[button] Moves selected channel(s) to the outlier channel. The channels that will be moved are the ones selected in the "Select channel(s) to plot" list box. Opens a popup window in which a list of the selected channel(s) is presented. For changes to take place, press the popup window 'OK' button, else press the 'Cancel' button. Uses the command line function std_moveoutlier().
"Reassign selected channel(s)"	[button] Moves selected channel(s) from one channel to another. The channels that will reassign are the ones selected in the "Select channel(s) to plot" list box. Opens a popup window in which a list of possible channels to which to move the selected channel(s) is presented. For changes to take place, press the popup window 'OK' button, else press the 'Cancel' button. Uses the command line function std_movecomp().
"Save STUDY set to disk"	[check box] Saves the STUDY set structure modified according to specified user edits to the disk. If no file name is entered will overwrite the current STUDY set file.
See also:	pop_prechant(), pop_chant().
Authors:	Arnaud Delorme, Hilit Serby, Scott Makeig, SCCN/INC/UCSD, October 11, 2004

See the matlab file pop_chanplot.m (may require other functions)

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