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Inequality with units says incompatibe units if the units are the same
 Rank: Newbie
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Joined: 19/11/2012(UTC) Posts: 5  Location: Slough
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I can't find a concise reson for this, it seems to depend on what unit is used.
If I have to evaluations (by this I mean equations without = in them) both of which contain units (here called E1 and E2) both of which evaluate to the same units.
I then create an in inequlaity, e.g. E1>E2= , the result being integer 0 or 1 (boolean) then about 50% of the time it says "Units don't match" even though they clearly do.
One equation that results in Hz works fine, another in Farad does not. If I multiply both sides by the unit, e.g. pF then it works.
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  Rank: Administration Groups: Registered, Advanced Member Joined: 23/06/2009(UTC) Posts: 1,740   Was thanked: 318 time(s) in 268 post(s)
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Hello,
Just make a problematic file and attached it to the post here, please.
Regards,
Radovan |
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!" |
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Rank: Newbie
Groups: Registered
Joined: 19/11/2012(UTC) Posts: 5 Location: Slough
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I have prepared an example, see attached
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  Rank: Advanced Member Groups: Registered, Advanced Member Joined: 13/01/2012(UTC) Posts: 2,648  Location: Italy Was thanked: 1331 time(s) in 876 post(s)
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Originally Posted by: jmc  I have prepared an example, see attached Hi
hjmc8899
, I can confirm the issue. Seem related to SMath unit simplification... refreshing the sheet I can see an alternate behavior (see the attachment) regards, w3b5urf3r Edited by user 20 November 2012 14:55:48(UTC)
| Reason: Not specified Davide Carpi attached the following image(s): |
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Rank: Newbie
Groups: Registered
Joined: 19/11/2012(UTC) Posts: 5 Location: Slough
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I noticed that if I right click and change Optimisation from numeric to symbolic and back the output sometimes changes, though I can't really get a handle on how to guarantee this to occur.
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Inequality with units says incompatibe units if the units are the same
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