setting parameters for 4 Blocks (wrong number of input arguments, should be odd?)

Hello,

when i set the Parameters for 1 Block i dont have any Problems( 3 input arguments )

But as soon as i want to do it for 4 i get an error message

set_param('model/Transfer Fcn','Denominator','T11','model/Transfer Fcn1','Denominator','T12','model/Transfer Fcn2','Denominator','T21','model/Transfer Fcn3','Denominator','T22');

Wrong number (12) of input arguments detected
At least 3 arguments are needed for set_param.
The number of arguments should be an odd value.

that doesnt make any sense to me , since there are 3 input arguments for every Block.

why do i get an error and how can i solve it ?

thanks in advance and

Kind regards,

Bünyamin

Answer 1

[Rollin Baker]

Hi Bünyamin,

The reason you are seeing this error is because the 'set_param' function is only meant to be called on a single block at a time. You will need to call it on each block individually. For example:

 set_param('model/Transfer Fcn','Denominator','T11');
 set_param('model/Transfer Fcn1','Denominator', 'T12');
 set_param('model/Transfer Fcn2','Denominator','T21');
 set_param('model/Transfer Fcn3','Denominator','T22');

This will give you the behavior you want without any errors. If you want to learn more about the 'set_param' function, check out the documentation page below:

https://www.mathworks.com/help/simulink/slref/set_param.html

I hope this helps. Good luck with your project!

-Rollin