Am I missing something here? It seems that the sum(1) function that's supposed to provide the sum of the elements of a vector/matrix is coming up with an error in the basic summation. In the screenshot attached, the sum(1) function totals 87.288 kips for a 4 element single column matrix that adds up to 86.215 kips by hand on a calculator, by adding the elements individually in SMath, and by an L1 norm function. It's over 1 kip different, so it shouldn't be rounding in any way. Is there something different about the sum(1) function that would cause it to come up with a different answer, or is this a bug?

Thanks,
Jason

I'm trying to replicate this issue, but for me all calculations are ok.
Please check your SMath version..



Sumation issue.sm (4 КиБ) скачан 19 раз(а).

Oscar

Yeah, I'm on the same version as you: appVersion(4)="1.0.8348.30405". When I copy that data into a new sheet or enter new data in a new sheet and sum it, it works out, same as what you're seeing. But it still displays the wrong sum in the original sheet. I'm going to have to take a look at it more tomorrow with fresh eyes, but thanks for the quick response. I hadn't actually tried it in a clean worksheet earlier, so there must be something in my other worksheet causing a problem.
Jason

Same as Oscar, because we both composed on new sheet.
Jean