Display a variable and its units

2011 12 3
4 个回答
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更新时间：2021 12 12
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0 个投票

I know how to use the display(X) function to display a variable I have solved for. So, if my X = 25, and I need it to display 25 ft/lb, how would I do this?

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Karan Gill
Karan Gill 2017-4-7
编辑：Karan Gill 2017-10-17

0 个投票

Units are now in MATLAB if you have Symbolic Math Toolbox. Try this, and see the tutorial: https://www.mathworks.com/help/symbolic/units-of-measurement-tutorial.html:
>> u = symunit;
>> x = 2*u.meter
x =
2*[m]
>> x = rewrite(x,u.ft)
x =
(2500/381)*[ft]
>> double(separateUnits(x))
ans =
6.5617
See the tutorial: https://www.mathworks.com/help/symbolic/units-of-measurement-tutorial.html

3 个评论
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Samuel Katongole
Samuel Katongole 2020-3-19
I am also looking for somwthing similar to what Damien is looking for, but mine is when i want to print thw units along with the values especially using the fprintf function....I too need help here..
Husam Alsaleh
Husam Alsaleh 2020-9-24
i am also using fprintf and i need to display my units next to the numbers

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更多回答（3 个）

Thomas Green
Thomas Green 2018-2-22
编辑：Thomas Green 2018-2-22

16 个投票

Hey, I just want to thank you guys for 1. always making it more complicated than it needs to be 2. adding statements/functions that are never really seen but could have easily could have produced the same result with a common command and most importantly 3.NEVER SHOWING AN OUTPUT. Like do you really think you are helping????
Sven
Sven 2011-12-3

5 个投票

You can use fprintf as follows:
X = 25;
fprintf('The answer is %d ft/lb\n', X)
If your answer will not be a nice round number like "25", you can replace the %d above with, say, %0.2f to print two decimal places.

5 个评论
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Ryan
Ryan 2011-12-3
Thank you! My variable is 7460.1 lbf That works very well, however it printed "The answer is '7.460094e+003 lbf' just like I wanted it to, but then it printed 7.4601e+003 the same line. Is it possible to get rid of the second variable display using this method?
Karan Gill
Karan Gill 2017-4-7
Units are now in MATLAB if you have Symbolic Math Toolbox. See the tutorial: https://www.mathworks.com/help/symbolic/units-of-measurement-tutorial.html
Posted a separate answer below so that OP can accept.
Samuel Katongole
Samuel Katongole 2020-3-19
Wow..this by Sven works...

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Ryan
Ryan 2011-12-3

0 个投票

I got it figured out. Thanks for the help! If I do X = 25; fprintf('The answer is %.2f ', X) display('unit');
It will put The answer is 25.00 unit and then output my next answer on the next line.

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