How to use matlab 'spline' function in simulink ?

Hi, I was trying to generate robot trajectory using spline function in simulink, I tried with all user function block available in simulink library but it is getting error the image is shown below. Can anybody help for this issue.

Answer 1

[Titus Edelhofer]

Hi,

the error message tells you what to do, namely "declare" spline as being used not by code generation but by MATLAB:

doc coder.extrinsic

Titus

[Sandeep Hanwate]

Thanks for answer Titus Edelhofer, but still facing the error to execute this small function in simulink, the function i am using is:

function y=fcn(t)    
u1= [0 1];                             %$DH
u2= [0 2];                             %init
coder.extrinsic('spline')
ay = zeros();
y = spline(u1,u2,t);

[Titus Edelhofer]

Hi,

except from the typo ("ay = zeros") and the not very interesting u1 and u2 it's fine. I tried this and get nice sine approximation (as in doc spline):

function y = fcn(t)    
u1= 0:10;                             %$DH
u2= sin(u1);                             %init
coder.extrinsic('spline')
y = 0;
y = spline(u1,u2,t);

Titus