Setting Look Up Table parameter 'Table' from GUI using set_param

I want to set the LUT parameter 'Table' frm a GUI:

Lookup Table (n-D): ..... simulink library block

Table data: wArray
Breakpoints 1:  ........

I am writing the following code in edit callback in GUI:

wNewVal = str2double(get(hObject,'String')); 
w=wNewVal;
wArray=[w w 0 0 -1*w -1*w 0 0]
set_param('SDH/Tp/w','Table','wArray')

i can run the code without any errors but if i run my simulation..i get the following error:

Error evaluating parameter 'Table' in 'SDH/Tp/w'

Caused by:
Undefined function or variable 'wArray'.

See this also:

get_param('SDH/Tp/w','Table')

ans =

wArray

Answer 1

[Kaustubha Govind]

The code in the GUI Callback creates variables in the callback function workspace. Do you run the simulation from the function or independently? If you run it using the SIM command from the function, use this syntax:

options = simset('SrcWorkspace','current','DstWorkspace','current');
sim('mymdl', [0 duration], options)

Otherwise, make sure that the variable 'wArray' is created in the base workspace, because that's where the model looks for it:

wNewVal = str2double(get(hObject,'String')); 
w=wNewVal;
wArray=[w w 0 0 -1*w -1*w 0 0];
assignin('base', 'wArray', wArray);
set_param('SDH/Tp/w','Table','wArray')

[Shyam]

i had done the second option and its working fine...thanks

[jason miller]

I have a simiar issue... How do you create a variable in the base workspace within the app?

Answer 2

[SENTHILKUMAR]

For the above question, How will you set the values for Breakpoints. When I try to do that in a same way which was mentioned. I am getting the following error

Lookup_n-D block does not have a parameter named 'Breakpoints'.

It recognizes tabledata parameter but not breakpoints parameter. How to overcome that?

[Huan]

It is not named as 'Breakpoints'. Try the below command, bro. LookupTable = find_system(sys,'BlockType','Lookup_n-D'); get_param(LookupTable,'BreakpointsForDimension1')

[Kurt Stewart]

Thanks that works perfect

[Kurt Stewart]

'TableData' is the name for the table data if people are wondering