 Rank: Newbie
Groups: Registered
Joined: 15/10/2015(UTC)
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I am new to using SMATH and could use assistance getting it to work for me. I am not sure what I am doing wrong. Attached is a screenshot of the variables and equations, unfortunately I can never get a result for Q1 and RV. I keep getting "units do not match", but don't know how to fix the problem. The results should be in inches and acre-feet. Please let me know if you can help? Thanks in advance. File Attachment(s): idelarca1 attached the following image(s):
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  Rank: Advanced Member Groups: Registered, Advanced Member Joined: 13/01/2012(UTC) Posts: 2,650   Location: Italy Was thanked: 1338 time(s) in 878 post(s)
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Hi idelarca1, hold the mouse pointer over Q.1yrpre, you can see that the sum is not possible, because S.pre is dimensionless while P is a length. You have used "Ignore units", but this feature works fine only using direct assignments inside the function (look here) Therefore you have to use the classic approach: modify Q.1yrpre to add a unit to S.pre or made P dimensionless. Edited by user 15 October 2015 16:56:51(UTC)
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