how to save the data from stepinfo

S = stepinfo(sysback)

S =

        RiseTime: 1.1517
    SettlingTime: 1.8694
     SettlingMin: 0.0819
     SettlingMax: 0.0916
       Overshoot: 0.7474
      Undershoot: 0
            Peak: 0.0916
        PeakTime: 2.5921

Hey, may i know how to return the data from a system such as grab the Rise Time from stepinfo result because i need it for further calculation,Thanks

Answer 1

[Star Strider]

‘S’ is a structure, so if you want to use the value of RiseTime in a later calculation, assign it to a variable:

SysRiseTime = S.RiseTime;

and the same for the others. You can of course refer to it in calculations as S.RiseTime but it's easier (for me in my code) to assign structure components to separate variables.

For more details on MATLAB structures and how to work with them, see:

http://www.mathworks.com/help/techdoc/matlab_prog/br04bw6-38.html

If you want to save it to a file, see ‘Data Import and Export’ ( http://www.mathworks.com/help/techdoc/import_export/ug_intropage.html ) in the MATLAB User's Guide.