Get DXF Codes and Remodify them with Entmake

Hello .

Any idea of how to change a particular a DXF code in an object... for example;

Suppose that I got the DXF codes of an entity with function 'entget' and I wanted to change the color of that entity by user input and rewriting a DXF codes with entmake .

Many Thanks.

Tharwat

you'll want to use (subst...) and (entmod...)

http://www.afralisp.net/autolisp/tutorials/into-the-database.php

http://ronleigh.info/autolisp/ales13.htm

hint: do a search of this forum for 'entmod'

you'll want to use (subst...) and (entmod...)

http://www.afralisp.net/autolisp/tutorials/into-the-database.php

http://ronleigh.info/autolisp/ales13.htm

 

hint: do a search of this forum for 'entmod'

Thank you so much

But I have a confusion between LWPOLYLINE and POLYLINE as the following;

(setq ent1 (car(entsel"\nSelect Polyline:"))
ent2 (entget ent1)
poly (cdr(assoc 0 ent2))
)

How to get the Entity name correctly for polylines ????

 
(if (= (or (LWPOLYLINE)(POLYLINE)) poly);;; <-- [color="Red"]it is not correct[/color]

or like this

 (if (= "LWPOLYLINE,POLYLINE" poly);;; <-- [color="red"]it is not correct[/color]

Or like this

 (if (= "*POLYLINE" poly);;; <-- [color="red"]it is not correct[/color]

What is the correct selection for all types of polylines ... ?

Best regards.

Tharwat

To make a selection set of nothing but polylines (lwpolylines, etc...)

(ssget '((0 . "*POLYLINE")))

to make a selection set of just 1 polyline

(ssget ":S" '((0 . "*POLYLINE")))

or using your method with (entget...)

(if (wcmatch poly "*POLYLINE"))

To make a selection set of nothing but polylines (lwpolylines, etc...)

(ssget '((0 . "*POLYLINE")))

to make a selection set of just 1 polyline

(ssget ":S" '((0 . "*POLYLINE")))

Thanks a lot.

But why can not we know the name of the Entity from the function ' entget ' to implement the function ' if ' with it .... ??

many Thanks

Tharwat

Hello

What is wrong with the following code;

(setq sset (ssget '((0 . "*polyline"))))
(if (= sset "*POLYLINE")
   (progn
       (........

Thanks

Tharwat

a cursory inspection...

No. 1. sset is a selection set, ssget returns the selection set's name, not the entities' type

No. 2 what are you using the = function to do? If you want to see if it's a polyline you need to strip the entity type from the dxf codes.

No. 3. you can't use a wildcard to compare strings in the = function

there's more