Plotgui

Purpose

Interactive data viewer.

Synopsis

fig = plotgui(data)

fig = plotgui(data,'PropertyName',PropertyValue,...)

fig = plotgui('update','PropertyName',PropertyValue,...)

Description

Plots input data data and provides a control toolbar in the Plot Controls window to select portions of the data to view. The toolbar allows interactive selection, exclusion, and classing of rows or columns of data. The PLOTGUI command has various display options that are given as 'PropertyName', 'PropertyValue' pairs or as a single keyword. Properties and Keywords are discussed below.

Inputs

• data = input data, can be class "double" or "dataset". The description given below is generally listed for two-way data arrays.

Notes: Options specific to data that are three-way or image are noted explicitly. PLOTGUI uses the dataset labels, classes, etc. when data is class "dataset".

• 'update' is used as a keyword input to modify options for an existing PLOTGUI figure without providing new data

Outputs

• fig = the handle of the figure in which the data is displayed

Plot Controls Toolbar

The toolbar consists of

• 1) a menu bar with File, Edit, and View menus,
• 2) a figure selection dropdown menu,
• 3) three axis menus (labeled x, y, and z),
• 4) plot update controls Plot button and auto-update checkbox, and Select button.

Each figure in the figure selection dropdown menu menu can be modified by the PLOTGUI controls. Selecting a figure from this menu will bring that figure into view and indicate the selected axis menu settings. A "+" or a "\*" next to a figure's name indicates that it is linked with another figure (see Duplicate Figure below).

The axis menus (labeled x, y, and z) select what parts of the data should be used for the plot. Each column or row selected in the y-axis menu will be plotted against the column, row or index selected in the x-axis menu. If any selection is made on the z-axis menu, then each y-axis selection is also plotted against the column or row selected in the z-axis menu to make a three-dimensional plot.

If the input data is three-way it is assumed to be a multivariate image, and the y-axis is slice or slab and the figure default is imagesc(dat(:,:,1)). This is also true if data is class "dataset" with the type field set to 'image' or 'image'.

If the auto-update checkbox is selected, figures are updated automatically when new axis-menu selections are made. Otherwise, the Plot button must be pressed before any changes are reflected in the figure.

View Menu

Various options associated with the viewed data are contained in the View menu. The specific options depend on the data being plotted. The View menu options are listed below.

• Table: Opens a Plotted Data window that lists the numerical values of the plotted data.
• Numbers: Displays the index number next to each plotted point.
• Labels: Displays available labels next to each plotted point. If no labels are available this option is grayed out.
• Classes: Uses available class information to give each plotted point a different symbol. If no class information is available this option is grayed out. The fly-out menu includes any class sets defined in the dataset as well as options to "Outline Class Groups". Group outlining allows drawing of lines to either enclose all samples in a group ("border points") or as a confidence boundary ("confidence ellipse").
• Declutter Labels: Controls the label/number decluttering options. Automatic modes remove labels when they overlap. "Selected Only" removes labels on all points except those which have been selected using the standard selection tools.
• Label Angle: Changes the angle of (i.e. rotates) all labels in a plot.
• Excluded Data: Shows any points which have been "excluded" from the data set.
• Axis Lines: Places lines through the origin.
• Log Scales: Switches axes between log and linear scaling.
• Auto y-scale: When enabled, all plotted data items are scaled so that their y-axis values are on a similar scale (that is, they are each baselined and normalized). The different methods for y-scaling include: Sum, Length, Max. In each case, the given property is set equal to 1 for each plotted data item. In addition, if the plot has been zoomed, the y-scaling method is based only on the currently visible data. The scaling can be recalculated for any given zoomed view by selecting "Scale from current zoom".
• Auto Contrast: Contrast enhancement for a slice/slab for multivariate images (only available when the data are 3-way or type image).
• Duplicate Figure: Creates a duplicate copy of the current figure that is linked to the current figure i.e. if one figure is modified the other automatically changes to reflect the modification. The parent figure will have a "+" next to its name in the figure selection dropdown menu and the child figure will have a "\*".
• Spawn Figure: Creates a duplicate copy of the current figure that is not controlled by the Plot Controls toolbar. This is a simple MATLAB figure.
• Dock Controls: When checked, the Plot Controls toolbar are "docked" next to the controlled figure.
• Settings: Allows the user to modify other view settings.

Plot Menu

Selects the "mode" in which the current data should be viewed. This can be either a summary of any given mode (Data Summary mode) or one of the standard modes of a data matrix including the rows, columns, or slabs.

• Data Summary: Plots all the data, the mean, the standard deviation, or the mean ? the standard deviation. For Variables (columns) or Samples (rows) depending on what is selected in the x-axis.
• Rows: Plots the data across rows selecting which rows (usually samples) to view.
• Columns: Plots the data down the columns selecting which columns (usually variables) to view.
• Slabs: Uses IMAGESC to view a slice/slab of a 3-way array (only available when the data are 3-way).

Selection using the Select button

The Select button allows the user to select plotted points in the current figure. After clicking Select, the current figure will be brought to the front and points are selected using the current selection tool (selected using the Tool button; see also Edit/Selection Mode menu). To extend a selection (i.e. add new points to the already selected points), use the shift-key while pressing the mouse button. To remove points from the selection, use the control-key while pressing the mouse button. To keep from making any selection, press "Esc" or "Escape".

Edit Menu

The Edit menu contains various actions relating to selections. The specific actions available depends on the current selection and PLOTGUI mode. The Edit menu options are listed below.

• Select All: Selects all plotted points.
• Deselect All: Deselects all plotted points.
• Select Class: Select all points of a given class or classes in the data (if any classes are defined).
• Select Excluded: Selects all points which are currently excluded (see View/Excluded Data).
• Selection Mode: Menu used to choose selection mode from the following:
• Box: Click and drag a rubber band box around points,
• Polygon: Click to mark the corners of a polygon around points and click on the intial point or press [Enter] to close the polygon,
• Circle: Click to mark center of a circle, then click to mark the outside edge of the circle,
• Ellipse: Click to mark center of an ellipse, click again to mark the minor axis size for the ellipse, then complete the selection by clicking to mark the size and direction of the major axis for the ellipse
• Paintbrush: Click and drag to "paint" a selection onto points,
• Lasso: Click and drag a free-form line to "ensnare" the points,
• Single X: Click to select a single point on the x-axis,
• Single Y: Click to select a single point on the y-axis,
• X Range: Click and drag to select a range of points on the x-axis,
• Y Range: Click and drag to select a range of points on the y-axis, and
• Nearest: Click to select the nearest point.
• Multiple Nearest: Click to select the nearest point, repeated until the [Enter] key is pressed.
• Include All: Includes all excluded points (whether or not they are selected).
• Exclude Selection: Excludes (soft deletes) the selected points from the data set. See View/Excluded Data.
• Include Selection: Includes the selected points in the data set. See View/Excluded Data.
• Include Only Selection: Exclude all unselected points from the data set i.e. keep only the selected points.
• Info on Selection: Get information on selected point (only available when a single point is selected).
• Set Class: Set the class of the selected points.
• Exclude Plotted Data: Excludes all items currently selected in the y-axis menu for plotting. Note that unlike the other exclusion options in this menu, this and the next two options act on the mode selected in the Plot menu.
• Include Plotted Data: Includes all items currently selected in the y-axis menu for plotting.
• Include Only Plotted: Includes all items currently selected in the y-axis menu for plotting and only those items (all others are excluded).

File Menu

The File menu contains various actions relating to files. The File menu options are listed below.

• Load Data: Creates an interface for the user to load data into PLOTGUI from the base workspace or a file.
• Save Data: Creates an interface for the user to save data from PLOTGUI to the base workspace or a file.
• Open in Editor: Opens the given dataset in a linked DataSet Editor window.
• Export Figure: Allows exporting the current figure to Various external programs (exporting will not function correctly if the given program is not installed on the computer).
• Save Selected Indices: Saves the current selection as a vector of indices. This can be used with the Load Selected Indices command to quickly store and reload different selections.
• Load Selected Indices: Load a vector of indices to use as a selection.
• Reset Controls: Refreshes Plot Controls. Useful if graphical objects are not correctly aligned.

Properties and Keywords

The following is a list of available properties. Each should be included as a 'PropertyName', 'PropertyValue' pair in an initial PLOTGUI call or a PLOTGUI 'update' call. Note that calls to PLOTGUI for PropertyName and PropertyValue are case insensitive.

The current value of almost all properties can be retrieved using the GETAPPDATA function on the PLOTGUI figure and requesting the property of interest. Note that calls to GETAPPDATA are case sensitive and PropertyName must be in all lower-case. The I/O format is:

currentvalue = getappdata(fig,'propertyname')

where fig is the handle of the PLOTGUI figure. If 'propertyname' is not included getappdata(fig) will list all the properties and their current values. Properties and their possible values follow:

• AxisMenuValues: {[x] [y] [z]}, Two or three element cell containing indices or strings indicating which item, or items, to select in each of the three axis pull down menus. In [x] or [y] a value of 0 (zero) means to select index number. In [z] a value of 'none' means to not use the z-axis.
• AxisMenuDefaults: Axis menu defaults are axis menu values used if the axis menu values can not be restored. The input format is the same as axismenuvalues.
• Figure: [scalar integer], Figure on which data should be plotted {default is current figure}.
• New: Key word - no associated PropertyValue. Creates a new figure for display of data. This is equivalent to an initial PLOTGUI call.
• PlotBy: [scalar integer], Dimension (mode) for the axis menu selections: 0 = special "data browser", 1 = rows, 2 = columns, etc. (see View menu). The default is 2 or the number of modes in the data if larger than 2-way.
• VSIndex: [ 1 1] {default}, Two element vector indicating if "Index" should be offered on x and y axis menus. A 1 indicates that it should be offered as a selection and a 0 indicates that it should not e.g. [1 1] indicates that it should be offered for both the x-axis and y-axis.

The following are image specific properties:

• Image: Key word - no associated PropertyValue. Unfolds a 2 or 3-way array and displays it as and image, allowing selection, classing, and exclusion of individual pixels.
• Unfold: Key word - no associated PropertyValue. Pseudonym for "image".
• AsImage: Key word - no associated PropertyValue. Display 3-way data that have already been unfolded as an image allowing selection, classing, and exclusion of individual pixels.

The following are view properties:

• ViewClasses: [1] {default}, Turns on View/Classes menu. A 0 (zero) turns it off.
• ViewExcludedData: [1] {default}, Turns on View/Excluded Data menu. A 0 (zero) turns it off.
• ViewLabels: [1] {default}, Turns on View/Labels menu. A 0 (zero) turns it off.
• ViewNumbers: [1] {default}, Turns on View/Numbers menu. A 0 (zero) turns it off.

The following are plot properties:

• LineStyle: <string>, Defines line style (see PLOT).
• PlotType: <string>, String used to select plot type {default [ ] is atuomatic selection}. Other values are 'scatter', 'bar', 'none' ('none' = do no plotting).
• SelectionMarker: <string>, Defines marker style for selected points (see PLOT).

The following are selection properties:

• SelectionMode: <string>, Defines the selection mode. This can be any string listed under View/Selection Mode above. Also see GSELECT.
• BrushWidth: [scalar integer number of pixels], This defines the brush width for use when selectionmode = 'paintbrush'. See View/Selection Mode/Paintbrush.
• NoSelect: [0] {default}, When set to 0 this allows selections. When set to 1 no selection is allowed.
• NoInclud: [0] {default}, When set to 0 this allows changes to the inlclud field (i.e. it allows data to be excluded). When set to 1 no changes to the inlclud field are allowed (i.e. data can not be excluded).

The following are on-event properties:

• CloseGUICallback: Command(s) to execute when the figure is closed.
• IncludChangeCallback: Command executed when includ field of the dataset is modified.
• InfoReqCallback: Command executed when information on a selected point is requested.
• PlotCommand: Command executed after plotting (e.g. draw limits, assign ButtonDownFcns, modifiy axes, ...).
• SelectionChangeCallback: Command executed when a selction is made.
• SetClassCallback: Command executed when the class field of the dataset is changed.

The following are confidence limit properties:

• ConfLimits: Boolean flag to make "Conf. Limits" controls visible. 1 = show controls (PLOTGUI does nothing with these controls, thus the routine specified in '[plotcommand-]' must be set to use values).
• LimitsValue: Value for Conf. Limits editbox.
• ShowLimits: Value for "Conf. Limits" checkbox (1 = checked).

The following are figure linking properties (WARNING! Modifying these settings can lead to unexpected results!):

• Children: Add new child of the current PLOTGUI figure (all child figures are updated when their parent is updated and closed when their parent is closed). Note: this property will only allow adding of additional children. Other modifications must be made using setappdata.
• ControlBy: Reassign control for PLOTGUI figure.
• Parent: Assign a parental link (Forces the parent figure to update if this figure is updated, also see 'Children').
• TimeStamp: Time-stamp of last time this figure was updated (can be set to any string to isolate figure from updating by parents).

The following are other miscellaneous properties:

• UIControl: Add extra uicontrol(s) to PLOTGUI control toolbar for use with current figure (buttons, sliders, etc.). The value passed to UIControl should be a cell in which each entry is the tag of a new object to create and the value of that field should contain a cell of uicontrol property / value pairs to set for that object. For example:

myobj.mybtn = {'style', 'pushbutton', 'string', 'new fig', 'callback', 'figure'};

plotgui('update','uicontrol',myobj)

creates a button with the tag 'mybtn' on the controls for the current figure.

If the cell for any object does not contain a 'position' property for the object, PLOTGUI will manage the object's position.

The following are read-only properties. These properties can only be viewed and are only accessible through the MATLAB getappdata command.

• Selection: Cell array of currently selected values. Usually the same format as "includ" field of DataSet object where each cell represents the index of selected items in each dimension {rows, columns, slabs, ...}.
• When selecting elements in greater than 2-dimensional data (and without the use of the 'image' keyword), two cells of this field will be pairs of selected indices: {x,y,[]} or {[],y,z}.
• FigureType: 'PlotGUI'
• DataSet: DataSet used in figure (or pointer to figure with actual dataset)

Note: This is set by calling PLOTGUI with a new dataset as an input. The actual DataSet can be retrieved using the getdataset command (see below).

The following are other valid figure properties. See the MATLAB documentation on FIGURE properties for additional information.

• HandleVisibility, MenuBar, Name, NumberTitle, Position, Resize, Tag, ToolBar, Units, UserData, Visible, WindowStyle

Examples

fig = plotgui(mydata)

plots mydata allowing user to select which column(s) of mydata to plot using pull-down menus. Figure number of plot is returned.

plotgui(mydata,'plotby',1) or plotgui(mydata,'plotby','rows')

plots mydata as in first example except that rows of mydata (dimension 1) are used for pull-down menus instead of columns. Note: When a PLOTGUI property is set for a given figure, the new value will be retained until a new value for that property is provided, even if new data is plotted on the same PLOTGUI figure.

fig = plotgui(mydata,'plotby',1,'axismenuvalues',{[1] [2 3]})

plots rows of mydata; sets controls with row 1 selected for the x-axis and rows 2 and 3 selected for the y-axis. Use:

getappdata(fig,'axismenuvalues')

retrieves current axis menu settings. [axispulldown-]

plotgui(mydata,'viewclasses',1)

plots mydata using symbols to identify the classes stored in dataset mydata. Use a value of 0 (zero) to turn off viewclasses.

plotgui('update','viewclasses',1)

Turns on viewclasses property for current figure without having to pass data to plot (substitute string 'update' for data)

mydata = plotgui('getdataset',fig)

Retrieves mydata from figure fig.

plotgui(myimage,'image')

plots 3-way image myimage selecting slabs of the image for display. The keyword 'image' allows selection, classing and exclusion of pixels in the image.

See Also

dataset, analysis, editds, gselect, modelviewer, mplot, ploteigen, plotloads, plotscores