Smath Question 1

[Brad805]

I finally have time to create a useful Embed calculation sheet. I have variables xi and yi that include the spaces between individual studs(see below). I will add/delete matrix values based on the actual embed plate design.

The question I have relates to getting the value nx below. Is there a simple function to get the number of columns from the xi matrix?

Dik, thanks for suggesting Smath. After some reading and trial and error it seems a good solution to better see ones calculations.

 

[IRstuff]

rows() and cols(), depending on orientation of the array

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[Brad805]

Thanks IR.

 

[dik]

This is a construct I use to check output, it's a little easier than your construct (from the first page of my template):

Dik

 

[dik]

Somehow the picture got embedded in the message... It's a matter of typing 'Check(Arg)' and hitting the '=' character, and I may have 20 of them in a program. It's a pretty busy 'first page' but is common to nearly all my programs. I printed it as the current page, using DoroPDF, and converted it to a *.png using 'paint.net', both free and excellent programs.

Dik

 

[Brad805]

I think I get where you are going with that dik. Do you have an example snip you could share? I do not like how messy some of the formulas have gotten.

Have you managed to add sketch drawings that update with your input values? I found a few examples on the Smath site, but when I looked under the hood they seemed a bit fiddly to make work. It would be great to have output I can cut/paste for clients to use.

Thanks

 

[dik]

A small program:

I've not tried to do scaled drawings... do a *.pdf print from Bricscad and convert it to a *.png.

Dik

 

[Brad805]

That was very helpful and appreciated. I can see a few ideas I need to incorporate.

 

[dik]

I make up my own units so I don't have 'stacked fractions' which I find takes up horizontal space. I also use NDX values to select one of many similar objects.
Enjoy and expand... I like SMath... a couple of little quirks, but, generally very good. My programs give it a bit of a plug...

Dik

 

[Brad805]

New question. I am working on a wall calculation sheet and have used matrices for the various load cases. In the image below both Pf and kbf are 1x6 vectors. You can see the variable function in red that needs to be evaluated. I can do this one by one, but I was hoping there was a better option.

 

[IRstuff]

That's precisely why Mathcad and SMath have indexed variables. Otherwise, you need to do a matrix inversion to it as a single algebraic equation.

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[GregLocock]

Also P_f seems to have gone AWOL.

Cheers

Greg Locock


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[Brad805]

Thanks.

Pf was not shown in image. It was late and I see it was missed.