18 Replies Latest reply: Jun 28, 2012 5:28 AM by Ian

# Representing Volume

Hi,

Let's say I have a 3d box with dimensions 2x.y.3z and x is dependant to k variable. I would ike to see the volume change of the mentioned box with regarding to k and visually represent it in 3D.Is this possible in Mathcad?

Thank you

yes

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No need for such a long, wordy answer Fred. Just "Y" would have sufficed.

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I aspire to Microsoft's benchmark:

Exactly correct, totally useless!

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Sorry for interrupting but I can't make 3D plot from 3 variables multiplication, do I need to define a matrix to represent the volume, how? thanks

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It's not clear to me what you are trying to plot. Your function a is a function of three variables, and therefore represents a 4 dimensional surface. You can't plot that.

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I am trying to plot a rectangular prism (x,y,z) in cartesian coordinates. x and y will be dependent to another function.3D plot will show the volume change visually. Surface plot takes 2 arguments (naturally) but I need to provide 3 to construct a rect. prism.

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From the electronic book "Creating Amazing Images with Mathcad" by Byrge Birkeland

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This seems useful but can't pass any variable to any element of X,Y or Z.They seem to be needing staying scalar.

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I don't understand what you mean. If you change sx, sy, or sz you change the size. If you change the elements of the vector x you change the position. You need to be more specific with your question.

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Is this the kind of thing you're after? I've used a library based on Maple's plottools functionality.

Stuart

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http://communities.ptc.com/message/73596#73596

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Richard Jackson wrote:

http://communities.ptc.com/message/73596#73596

I'd forgotten about that, but now you've reminded me, I've remembered that I was so inspired by your act of memory impairment that I too took to forgetting everything I've ever done as well. It was as big as surprise to me as anyone when a search on 'cube' brought up a message with my name on it and the plottools worksheet.

I noticed another name cropping up. Is Jean coming up for parole or was it consecutive life sentences with no hope of remission? You'd think I'd remember a thing like that, wouldn't you ... or would you? ...

Sorry, I've had a busy day supporting equipment trials where nothing made sense. I think my reality cheque was made out on an inflatable rubber castle and it was party time when I tried to cash it.

Stuart ... I think.

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I noticed another name cropping up. Is Jean coming up for parole or was it consecutive life sentences with no hope of remission?

I don't actually know, but I suspect the door was securely locked and the key was then melted down.

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Richard Jackson wrote:

I noticed another name cropping up. Is Jean coming up for parole or was it consecutive life sentences with no hope of remission?

I don't actually know, but I suspect the door was securely locked and the key was then melted down.

No problem. I can think of several ways of dealing with locked doors ... or, failing that there's always the walls - reminds me of some establishment or other that fitted a really high-tech, secure entrance to their facility, so the evaluators simply cut through the corrugated steel wall.

Stuart

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Superb work there Stuart.

Mike

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Mike Armstrong wrote:

Superb work there Stuart.

Mike

Of course.

... Muhahaha! My ego grows beyond all known bounds! Today, the Multiverse. Tomorrow, the ... damn, so much for territorial ambition.

(thanks )

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You can if you animate it !

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A starting point: