Matlab Live Script Format Problem

Hello!

I have a some problem. I want to see the result on shortEng format. But I cant do it.

Answer 1

[Cris LaPierre]

This is likely because your value does not have an exact decimal equivalent. Since the result is symbolic, you are getting the exact representation. If you want to keep the units, use vpa and specify the number of digits to show.

u=symunit;
S_z=2*u.mm;
S_k1=205*u.mm;
N_tvs=231;
S_az=sqrt(3)/2*(S_k1+S_z).^2.*N_tvs;
S_az=unitConvert(S_az,u.m^2);
vpa(S_az,4)

ans = 

8.572 m2

Another option is to convert the symbolic number to double.

[S_az,Unit] = separateUnits(S_az);
S_az = double(S_az)

S_az = 8.5720

[Mehmet SARIARSLAN]

Thank you so much!

Answer 2

[Walter Roberson]

Symbolic values are never output in shortEng format.

About the closest you will be able to get is

digits(5)
vpa(S_az)

This will give the same number of digits after the decimal place as shortEng would. However, this will not switch to engineering notation until values are at least +/- 1e6, and it will not group by multiples of 3.

I seem to recall that several years ago someone (probably either Jan or Stephen) posted a routine to format non-symbolic numbers in engineering notation. If you had a routine such as that, then you could use it in conjunction with the obscure mapSymType call... (mumble, mumble, mumble...)

In short... it is certainly not easy.

[Mehmet SARIARSLAN]

Thank you so much!