MATLAB: Undefined function or variable ‘numer’.

matlab functionSymbolic Math Toolbox

I'm running MATLAB Version: 9.1.0.441655 (R2016b) with Symbolic Math Toolbox Version 7.1 I have "restoredefaultpath" and "rehash toolboxcache"

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Best Answer

You are looking at a Mupad routine for which there is no MATLAB interface. You will need to use

feval(symengine, 'numer', expression)

Related Solutions

MATLAB: Normalizing a symbolic expression

feval(symengine, 'normal', expression)

Otherwise,

[tnum, tden] = numden(expression) 
simplify(tnum) / simplify(tden)

MATLAB: Problem with if function and decimal numers

The problem was using fix instead of rounding. Try this where I use int32() to cast to the nearest integer. I also cleaned up your if to make it more efficient and reduce the number of if tests by a factor of 10.

a=1:0.1:2;
for i=1:1:10
  angoloutile(i)=a(i);
end
for j=1:1:10
  integ = fix(angoloutile(j));
  fract = abs(angoloutile(j)- integ);
  fract=fract*10;
  deci=int32(fract);
  fprintf('j = %d, angoloutile(j) = %f, integ = %d, fact = %f, deci = %d\n', ...
    j, angoloutile(j), integ, fract, deci);
  if deci == 1
    angoloutile(j)=angoloutile(j)+0.5;
  elseif deci == 2
    angoloutile(j)=angoloutile(j)-0.08;
  elseif deci == 3
    angoloutile(j)=angoloutile(j)-0.12;
  elseif deci == 4
    angoloutile(j)=angoloutile(j)-0.16;
  elseif deci == 5
    angoloutile(j)=angoloutile(j)-0.20;
  elseif deci == 6
    angoloutile(j)=angoloutile(j)-0.24;
  elseif deci == 7
    angoloutile(j)=angoloutile(j)-0.28;
  elseif deci == 8
    angoloutile(j)=angoloutile(j)-0.32;
  elseif deci == 9
    angoloutile(j)=angoloutile(j)-0.36;
  end
end
% Print to command window.
angoloutile

Best Answer

Related Solutions

MATLAB: Normalizing a symbolic expression

MATLAB: Problem with if function and decimal numers

Related Question