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What am i doing wrong?

ssram over 6 years ago

If i do

shapes=geGetSelSet()~>layerName

i get all the selected layer names. And if my output is something like

("m0" "m0" "m0" "m0" "m1" "m1" "m2" "m2" "m0" "m2")

how do i get only the list of "m0" ?

RK56 over 6 years ago

Hi,

You can use "setof" to filter a list

setof(x geGetSelSet() x~>layerName=="m0")

The above line will return a list of shapes (db IDs) that are only of layer "m0".

There also another function named "exists" which works similarly, but I prefer "setof".

-Ramakrishnan
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Andrew Beckett over 6 years ago in reply to RK56

RK56 said:
There also another function named "exists" which works similarly, but I prefer "setof".

I should point out that exists doesn't really work similarly - exists returns the remainder of the list which starts with the first element that matches the condition, whereas setof returns only the elements of the list which match the condition...

Sorry to be pedantic - just didn't want ssram to head off in the wrong direction.

Regards,

Andrew.
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RK56 over 6 years ago in reply to Andrew Beckett

Thanks Andrew. I did not know that.
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ssram over 6 years ago in reply to RK56

Thank you Ramakrishnan. I got it working!
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