Question from beginner

What is failing to not work properly?

;;writing point with z value
(defun c:wpz()
(setvar "PDMODE" 3)
(setq pt (getpoint "\nPoint:"))
(setq zv (getdist "\nZ Value:"))
(setq x (car pt))
(setq y (cadr pt))
(command "point" x y zv)
(princ)
)

maybe so?

;;writing point with z value
(defun c:wpz()
(setvar "PDMODE" 3)
(setq pt (getpoint "\nPoint:"))
(setq zv (getdist "\nZ Value:"))
(setq x (car pt))
(setq y (cadr pt))
(setq cord (list x y zv))
(command "point" cord)
(princ)
)

The issue is the way you tried to build the coordinates list:

(defun c:wpz()
(setvar "PDMODE" 3)
(setq pt (getpoint "\nPoint:"))
(setq zv (getdist "\nZ Value:"))
(setq x (car pt))
(setq y (cadr pt))
(command "point" [color=red](list [/color]x y zv[color=red])[/color])
(princ)
)

The issue is the way you tried to build the coordinates list:

(defun c:wpz()
(setvar "PDMODE" 3)
(setq pt (getpoint "\nPoint:"))
(setq zv (getdist "\nZ Value:"))
(setq x (car pt))
(setq y (cadr pt))
(command "point" [color=red](list [/color]x y zv[color=red])[/color])
(princ)
)

Tanks, Mircea.

However, how do I set routine by the size of the point style. For example, to determine their visibility in absolute units?

Please check the PDSIZE system variable - will need to input a positive value for absolute units (the negative one means percentage of viewport size).

Please check the PDSIZE system variable - will need to input a positive value for absolute units (the negative one means percentage of viewport size).

Tanks, Mircea.

Resolved.

Not sure I would use getdist

 (setq zv (getdist "\nZ Value:"))
(setq zv (getreal "\nZ Value:"))
or
(setq zv (getdist pt "\nZ Value:"))

First, I was also tempted to suggest to constrain indication of that distance from insertion point, but later thought that, since OP doesn't gave info about his scenario, then is possible that he/she will pick the said distance in a different part of the drawing.

A lot of people use GETDIST thinking its as the name implies get a distance when asking for the user to actually enter a value via the keyboard. Its real purpose is to get a distance using mouse style screen input.