MATLAB: Can I use the SISOINIT Command to open up a system Step or Impulse response with Control System Toolbox 9.0 (R2010b)

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With Control System Toolbox 9.0 (R2011b), I can always start the SISOTOOL with, for example, a bode plot and a root locus of the open loop system using SISOINIT.
T = sisoinit(1);         
T.OL1.View = {'rlocus','bode'};
Now I also would like to show a step response of the closed loop at start up. Normally, I have to wait for SISOTOOL to load and then go to 'Analysis Plots -> Plot Type' and select 'step' and click the appropriate checkbox under 'Contents of Plots'.
I was wondering if it was possible to use SISOINIT to also pull up a Step or Impulse plot. I was unable to find this anywhere in the documentation.

Best Answer

The available options for SISOTOOL visualizations using SISOINIT are limited to those which display the poles and zeros of a system. These options are:
Open-Loop: 'rlocus', 'bode', 'nichols'
Closed-Loop: 'bode'
That is, only the above plots can be toggled on or off using SISOINIT.
The reason behind this is that all other analysis plots, such as step responses, are opened on a different LTI Viewer window. Therefore, the ability to automatically open up any LTI Viewer plots with the SISOTOOL command is currently unavailable in Control System Toolbox 9.0 (R2010b).
The closest thing that can be done is to save a SISOTOOL Design Task to a MAT File using "File > Save" from the main SISOTOOL window. This task can then be reloaded at a later time and the selected Step response plots will be saved in the Analysis Plots tab for future use.
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