Select Arcs by with Normal Z = -1

[Anonymous]

Newbie here trying to learn LISP. My first program is to flip all arcs and circles that have a Normal Z property of -1. But I'm having trouble finding a detailed list of commands and functions for the LISP language that explain creating circles to selecting entities filtered by properties. I must be searching for the wrong terminology.

Any links will be greatly apriciated.

Thx

Bill H.

[Anonymous]

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@hmsilva wrote:

bhaushalter1,

in this example, in the pedit command, I used the option multiple to be faster, and in this way created two polylines

hope that helps

Henrique

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That did it... Thanks.

[hmsilva]

You're welcome, bhaushalter1

[Kent1Cooper]

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@Anonymous wrote:

....

    ss (ssget "X" (list (cons 0 "ARC") (cons 210 '( 0 0 -1))))
....

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Since nothing in that filter list requires any evaluation of variables, or calculations, but it's all known values, you can simplify it if you want:

    ss (ssget "X" '((0 . "ARC") (210 0 0 -1)))

or, find both Arcs and Circles as mentioned in the beginning:

    ss (ssget "X" '((0 . "ARC,CIRCLE") (210 0 0 -1)))