Plot management

To identify the name of the model or data corresponding to a curve, turn off the zoom mode (using Style->Zoom option) and then click on the curve in the plot.

To display a curve in the plot, click the corresponding data or model icon in the System Identification app. For the data or model that is shown in the plot, the corresponding icon in the app window is marked by a thick line.

To remove a curve from the plot, click the that data or model icon again.

The color of a curve corresponds to the color of the data or model icon in the app window. Note that the figures are opened with zoom mode enabled. You can disable the zoom model using the Style menu option for zoom control.

For multi-input/multi-output data and models, choose the input-output pair by selecting it from the Channel menu in the plot window.

Menu items

File
 Options
Autorange: Automatically sets axis limits.
Set axes limits: Opens a dialog where you specify axis limits.
Confidence interval options
Style
Channel

Help topics.

File Menu in Plot Windows

File Menu Items

Copy figure
Opens the plot as a MATLAB figure. Does not copy menus and controls.
Print
Opens the MATLAB Print dialog for the current figure.
Close
Recommended way to close the current plot window. This is equivalent to clearing the corresponding Data Views or Model Views check box in the System Identification app window.

Help topics.

Style Menu in Plot Windows

Style Menu Items

Grid
Toggles showing and hiding grid lines.
Zoom
Toggles zoom.
When zoom is enabled, right-click on a plot to zoom out and left-click on a plot to zoom in. When zoom is disabled, click any mouse button on a plot to view the associated data or model name along with the values of x and y coordinates corresponding to the location of the mouse on the curve.

Note:To reset zoom after a plot is updated, select Options->Autorange in the plot window.

Separate linestyles or All solid lines
These mutually exclusive options determine how the curves appear on a plot. On black and white monitors, use Separate linestyles to visually associate the curves with the data or model. The currently visible curves are assigned solid, dashed, dotted, and dash-dotted linestyles.

Help topics.

Channel Menu in Plot Windows

Channel Menu Items

Lists the available channels. The selected channel name is currently plotted.

For example, u1->y2 means that the transfer function from input 'u1' to output 'y2' is displayed. The symbol e (for example, used in e@y3->y1) represents a noise source. There are as many noise sources as outputs. e@ynam refers to the innovation (noise source) for the output with name ynam.

For the Model output and Noise spectrum Views, only the output name matters.

The current channel names are always displayed in the figure title.

The naming of the signals remains consistent among different data sets that have been created by subselecting channels from an original set.

Help topics.

(file idgview.htm)