Has anyone found a way to handle units in sagemath ?

asked 2021-11-09 12:43:18 +0100

aurelius_nero
85 ●2 ●2 ●10

Hi, I am looking for a way to handle units in Sagemath, both numerically and symbolically. I am trying to see how I can emulate the Mathcad capability of unit consistency in Sagemath. For example, How would I be able to do the following: Symbolic: delta= PL/AE , P=3F N, F=deltaAE/3*L N

numerical: 1kN +500N = 1.5kN

Thanks for the help

answered 2021-11-09 21:35:11 +0100

Emmanuel Charpentier
7774 ●6 ●51 ●154

This may enlighten you

I found this facility a bit awkward (at least initially) but useful. LaTeX output may use a bit of love...

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@Emmanuel Charpentier I have seen that documentation. Though, it functions like a symbolic variable. You can't change m to mm and vice versa easily.

aurelius_nero ( 2021-11-10 01:42:40 +0100 )edit

You can't change m to mm and vice versa easily.

Huh ?

m=units.length.meter
mm=units.length.millimeter
sage.symbolic.units.convert(2/10*m, mm)
200*millimeter

Also :

(200*mm).subs(mm==1/1000*m)
1/5*meter

Emmanuel Charpentier ( 2021-11-10 10:11:42 +0100 )edit

@Emmanuel Charpentier Does this work the same way if I want to change the unit of the same variable ? for example; L =10m to L=10000mm ?

aurelius_nero ( 2021-11-13 10:43:28 +0100 )edit

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