(setq newflag (getvar "useri3"))

hi any one know what the following command means? what would be the value of newflag in different circumstances?

 

If useri3 system variable is set to say: 1 (one).
The statement (setq newflag (getvar "useri3")) .. will set
the 'value' of 'newflag' variable to a 1.
Then, later you can check the newflag value..
e.g.
(if (= newflag 1)
(...do something)
(...else don't)
); end if

Bob

 

USERI3 is a User-definable Integer variable. It would have to have a value
put in it, but once it does, it is saved with the drawing, so it might not
show up earlier in the same lisp routine. There are five such
system-variable slots available, USERI1 through USERI5. There are also
USERR1 through USERR5 (for real numbers rather than integers), and USERS1
through 5 for text strings, though for some odd reason the String variables
are not saved when you exit a drawing.

We use USERI1 for the ratio of reality to the drawing, for which lots of
people use DIMSCALE. The value is set during the Setup routine people go
through when they make new drawings. Then we use it in all sorts of things,
mostly as a multiplier for specifying insertion scale factors, text heights,
and the like:

-INSERT <blockname> S (getvar "USERI1") \0

in a macro would be used to Insert some graphic symbol which is drawn at the
size it should appear on paper, and which you wouldn't need to use at any
rotation other than 0 degress.

-STYLE <textstylename> <fontname> (* (getvar "USERI1") 0.125) ;;;;;

would define a text style with a fixed plotted height of 1/8", and no
obliquing or other options.

Sometimes in a routine where I expect to use such a scale factor repeatedly,
I'll put in something to abbreviate it, like:

(setq mf (getvar "USERI1"))

so that later I can just say !mf to use it, instead of putting in the whole
(getvar "USERI1") thing. I'd guess something like that is the purpose of
the function in your Subject line.

Kent Cooper, AIA

of newflag in different circumstances?

 

WOW... you are awesome. Thank you very much for the information. I was really confused because the useri3 was not defined anywhere, and yet the lisp was using it.
regards

maryam