I am working with the symbolic toolbox and I am trying to generate a matlab function using the command matlabfunction() with gg as an input, where gg is a vector of piecewise functions as follows:
gg =
piecewise(x8 in Dom::Interval(-10, 10), x8, 10 <= x8, 10, x8 <= -10, -10)
x5
piecewise(10 < x8 | x8 < -10, 1, x8 in Dom::Interval([-10], [10]), 0)
piecewise(10 < x8 | x8 < -10, 1, x8 in Dom::Interval([-10], [10]), 0)
piecewise(80 <= t, 1, symtrue, 0)
Where t, x5, and x8 are symbolic variables.
When using the matlabfunction() command, as follows:
g = matlabFunction(gg,'Vars',{xNum,t},'File','genEqs/g');
I get the following errors and warnings:
Warning: Intervals ('DOM_INTERVAL' and 'Dom::Interval') not supported. Using element '0' instead.
Error using symengine
Unable to generate code for object 'x8 in t4'.
Error in sym/matlabFunction>mup2mat (line 404)
res = mupadmex('symobj::generateMATLAB',r.s,ano,spa,0);
Error in sym/matlabFunction>writeBody (line 516)
body = mup2mat(eqnk,false,sparseMat);
Error in sym/matlabFunction>writeMATLAB (line 452)
writeBody(fid,tvalues,sparseMat);
Error in sym/matlabFunction (line 183)
g = writeMATLAB(funs,file,varnames,outputs,body, opts.Optimize, opts.Sparse, opts.Comments);
Error in antiwindup_RUN_rrrr (line 241)
g = matlabFunction(gg,'Vars',{xNum,t},'File','genEqs/g');
However, if I use the following vector of piecewise functions, then the code works perfectly fine.
gg =
piecewise(x8 in Dom::Interval(-10, 10), x8, 10 <= x8, 10, x8 <= -10, -10)
x5
piecewise(10 < x8 | x8 < -10, 1, x8 in Dom::Interval([-10], [10]), 0)
piecewise(10.1 < x8 | x8 < -10.1, 1, x8 in Dom::Interval([-10.1], [10.1]), 0)
piecewise(80 <= t, 1, symtrue, 0)
What would be the reason of this? I can't figure it out. Is there a way to bypass this error?
Thank you in advance.
Nicolas
