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zoomcp

Zoom Nyquist plot to region around critical point

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    Syntax

    zoomcp(np)

    Description

    zoomcp(np) zooms the Nyquist plot corresponding to chart object np to the region around the critical point (–1,0).

    example

    Examples

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    Open Live Script

    Plot the Nyquist frequency response of a dynamic system. Assign a variable name to the plot handle so that you can access it for further manipulation.

    sys = tf(100,[1,2,1]);
h = nyquistplot(sys);

    MATLAB figure

    Zoom in on the critical point, (–1,0). You can do so interactively by right-clicking on the plot and selecting Zoom on (-1,0). Alternatively, use the zoomcp command on the plot handle h.

    zoomcp(h)

    MATLAB figure

    Input Arguments

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    Nyquist plot, specified as a nyquistplot object.

    Alternative Functionality

    To interactively zoom to the region around the critical point, right click the Nyquist plot area and select Zoom on (-1,0).

    Version History

    Introduced in R2019b

    See Also

    Topics