How to use matlab 'spline' function in simulink ?

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Sandeep Hanwate
Sandeep Hanwate 2016-4-7
评论： Titus Edelhofer 2016-4-11
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.

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Titus Edelhofer
Titus Edelhofer 2016-4-7
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
  2 个评论
Sandeep Hanwate
Sandeep Hanwate 2016-4-8
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]; %$DH
u2= [0 2]; %init
coder.extrinsic('spline')
ay = zeros();
y = spline(u1,u2,t);
Titus Edelhofer
Titus Edelhofer 2016-4-11
Hi,
except from the typo ("ay = zeros") and the not very interesting u1 and u2 it's fine. I tried this and get nice sine approximation (as in doc spline):
function y = fcn(t)
u1= 0:10; %$DH
u2= sin(u1); %init
coder.extrinsic('spline')
y = 0;
y = spline(u1,u2,t);
Titus

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