Toggle manual switch through m-file script

I want to toggle the manual switch block in Simulink using an m-file script.

....my model file is called "ecg_filter" and the manual switch is called "sw1", so I wrote in the m-file: set_param('ecg_filter/sw1','varsize','off') but the switch did not change positions, what am I doing wrong?

I have already looked at the following answer at: http://www.mathworks.es/matlabcentral/answers/32167-controlling-manual-switch-through-m-file

[Mohammed Manna]

Good question!

Answer 1

[Kaustubha Govind]

The parameter is called 'sw', not 'varsize'. You need to use:

>> set_param('ecg_filter/sw1', 'sw', '0')
>> set_param('ecg_filter/sw1', 'sw', '1')

[Jannick]

I tried this code aswell, but the problem I'm facing is the following: When I try to control the manual switch in my simulink model, I use the code:

        set_param('path-to-switch-in-model', 'sw', '0')

As I always try commands in the Matlab console first, the following error showed up:

annotation does not have a parameter named 'sw'

The next step I took was to add the annotation in the manual switch (right click on the switch --> properties -->block annotations). 'sw' was not in the list, so I typed it in there myself (sw = %<sw>) and I could see the number shifting between 0 and 1 when I was switching. I tried the same line of code again, but it still didn't work...

I temporary changed the manual switch for a normal switch, controlled by a constant block to get rid of the problem. But this is just temporary because I'd love to make a GUI and Simulink model that are synced to each other and the user can choose where he wants to interact with: the GUI or the Simulink model...

I hope at least someone knows how to solve this problem?! thanks in advance!

[michael brewin]

The accepted answer works. >> set_param('ecg_filter/sw1', 'sw', '0') >> set_param('ecg_filter/sw1', 'sw', '1')

But since this was reported in 2012,,,,, WHY IS THERE NO UPDATE TO THE DOCUMENTATION, OR WHY IS 'SW' HIDDEN. I CAN FIND NO REFERENCE TO IT ANYWHERE ! MATLAB, I EXPECT THAT THIS VERY BASIC LEVEL OF DOCUMENTATION TO BE INCLUDED FOR THE MANUAL SWITCH BLOCK. I WILL SUBMIT A SUPPROT CASE, BUT I FIND IT HARD TO BELIEVE THAT SOMETHING SO BASIC IS HIDDEN.

New to Simulink - and getting frustrated,,, Dr Mike Brewin.

[Chetan Sharma]

Hi people. How did you find that the parameter is called 'sw'? I am trying to use same kind of parameter in manual variant sink block but unable to find a parameter for the same. Thank you. :)

[Sergio Enrique Pinto Castillo]

How did you change the position of the toggle swicth using the value of output in a simulink block?