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How do I select all objects in an array?

Posted 22 ott 2011, 15:01 GMT-4 Version 4.2, Version 4.2a, Version 4.3 5 Replies

Angelo Wong
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So I'm trying to build an array of squares on a workplane, where the array is of m by n dimensions (I say m and n because I want to vary them in say a parameter sweep or something). I want to subtract these array of squares from an even bigger square (see attached). Problem is that if I start out with a 3x3 array, and then I union the 3x3 array, and do (bigger square - the union of the array), I am fine for the 3x3 case. But since my union selection is going to be arr(1,1)...arr(3,3), if I change the m by n to say 5 and 4, only the arr(1,1)...arr(3,3) is selected (i.e. arr(bigger than 3, bigger than 3)) will not be selected.

So is there some way to select all the objects in an array in an automatic manner so that it is robust in parameter sweeps, regardless of size?

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5 Replies Last Post 19 apr 2017, 15:32 GMT-4
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Hello Angelo Wong

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chrisv
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Posted: 1 decade ago 3 gen 2012, 14:37 GMT-5
I had the same issue in defining a coil domain and using a parametrized rectangular array to vary the number of turns and layers. Here's one way to select all members of the array:

Use the Definitions > Selection > Box

Define the box to be just around the maximum extent of your array.

Then choose: Include entity if: Entity inside box

Try it out by changing the parameters manually. You can use intersection/union selection commands to remove other entities that might interfere.

Once you have a named selection, you can use it throughout the model for materials definitions, coil domains, and so on.
I had the same issue in defining a coil domain and using a parametrized rectangular array to vary the number of turns and layers. Here's one way to select all members of the array: Use the Definitions > Selection > Box Define the box to be just around the maximum extent of your array. Then choose: Include entity if: Entity inside box Try it out by changing the parameters manually. You can use intersection/union selection commands to remove other entities that might interfere. Once you have a named selection, you can use it throughout the model for materials definitions, coil domains, and so on.
John H.
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Posted: 1 decade ago 4 gen 2012, 03:14 GMT-5
Once you have a named selection, you can use it throughout the model for materials definitions, coil domains, and so on.

But you cannot use that selection in the geometry sequence — which I think was the intent of the original question.
[QUOTE]Once you have a named selection, you can use it throughout the model for materials definitions, coil domains, and so on. [/QUOTE] But you cannot use that selection in the geometry sequence — which I think was the intent of the original question.
mjm
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Posted: 1 decade ago 24 apr 2012, 05:31 GMT-4
Did somebody solve this problem? Is there a way to do this in Matlab?

--
mm
Did somebody solve this problem? Is there a way to do this in Matlab? -- mm
Sonali Dasgupta
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Posted: 1 decade ago 7 ago 2012, 05:34 GMT-4
Hi,

I am trying to do something very similar. i want to create n copies of a circle using the 'copy' command and then manipulate only some of the copied objects using the 'compose' command. I have created a 'selection' for the copied objects but cannot find a way to automatically choose all the copied objects in the 'formula' for the 'compose' operation.
Has anyone have a found a solution to this?
Hi, I am trying to do something very similar. i want to create n copies of a circle using the 'copy' command and then manipulate only some of the copied objects using the 'compose' command. I have created a 'selection' for the copied objects but cannot find a way to automatically choose all the copied objects in the 'formula' for the 'compose' operation. Has anyone have a found a solution to this?
Daniel Fullager
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Posted: 8 years ago 19 apr 2017, 15:32 GMT-4
The trick is to use 'Selections of Resulting Entities' in the Array menu to 'Contribute to:' 'resulting selections'. You can then in the boolean menus select the cumulative selections you create from the Array sub menu. Cheers!
The trick is to use 'Selections of Resulting Entities' in the Array menu to 'Contribute to:' 'resulting selections'. You can then in the boolean menus select the cumulative selections you create from the Array sub menu. Cheers!

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