set_param and callback argument

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Christophe
Christophe 2011-10-24
Hello,
I have a syntax question. I would like to use the set_param function to define a callback Startfcn of a simulink block. How can I put an argument to my Startfcn function ?
For example : modelName = 'sim_model.mdl' function_name = 'start_function' set_param(modelName,'StartFcn',function_name);
For example, my Startfcn is like this :
function start_function(abc) display(abc) end
Thnak you in advance.

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采纳的回答

TAB
TAB 2011-10-24
Where you want to put 'StartFcn' callback function, either for a block or for a whole simulink model ?
For StartFcn of a block:
Get the block handle and use with set_param(). For example
bh=gcbh; % Returns handle of current selected block
set_param(bh,'StartFcn',function_name);
For StartFunc of whole model:
Get the model handle and use with set_param(). For example
open_system(modelName);
mh=get_param(modelName_without_extension,'handle'); % Retuns model handle
set_param(mh,'StartFcn',function_name);
-------------
[ EDITED ]
abc_str=sprintf('%f',abc) % Get the value of abc in string
func_str=strcat('start_function(',abc_str,')');
set_param(mh,'StartFcn',func_str);
You can format string 'abc_str' as per data type of variable 'abc' using %d, %s etc.

更多回答（1 个）

Christophe
Christophe 2011-10-24
Thank you for your reply.
I am able to use set_param if the startfcn does not have any argument. I would like to know how to do so if I have some input arguments like I wrote in my previous post :
function start_function(abc)
display(abc)
end
How can I put the 'abc' argument in the Startfcn callback, I would be glad if you could help me. I have tried :
set_param(modelName,'StartFcn',{@start_function,abc});
It does not work.
Thank you.
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Christophe
Christophe 2011-10-25
Thank you but my abc data is a structure. Sorry not to say that at first.
TAB
TAB 2011-10-25
I have to again guess how your structure will be.
Please give some datails. If you can not post original data, express it with examples.

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