how to use MATLAB units ?

I need to use units in Matlab

To use Matlab units i use Mupad like this:

aux1 = evalin(symengine,'unit::convert(2.1*unit::volt, unit::mvolt)')

Which returns

2100.0*unit::mvolt

Is there any way to use units beside this hack , which is quite annoying ...

Answer 1

[Karan Gill]

Starting R2017a, units are available in MATLAB via Symbolic Math Toolbox. See:

https://www.mathworks.com/help/symbolic/units-of-measurement-tutorial.html

Karan. (Symbolic doc)

[SL: fixed typo.]

Answer 2

[Walter Roberson]

Other than switching to feval() syntax, No.

[timo]

Can you please elaborate feval() syntax ? Is it shorter ?

[Walter Roberson]

V = sym('unit::volt');
mV = sym('unit::mvolt');
aux1 = feval('symengine', 'unit::convert', 2.1 * V, mV)

[timo]

aux1 evaluates wrong

aux1 = 
MuPAD symbolic engine

[timo]

Anyway sym syntax is fine by me

I marked my answer as the solution.

[Walter Roberson]

aux1 = feval(symengine, 'unit::convert', 2.1 * V, mV)

Answer 3

[timo]

Well to reduce some extratyping this shall help :)

MUPAD = @(x) sym(x);

Then use like MUPAD('unit::ohm')

The better solution is thanx to Walter's suggestion is to use sym keyword and then the string for Mupad units. I will see how it gets me