distance between 2 points

[Tbag]

 

I am trying to set a variable with distance between 2 points. I am getting 2 points from user input but when I try to convert to feet (2nd line of code)

I am getting an error.  I cannot figure out what is wrong with this:
 

(setq distpcc (rtos(distance pt1 pt2) 2 8))
(setq distpcc2 (/ distpcc 12 ))

 

Thanks

Edited June 16, 2020 by Tbag

[jonathann3891]

If you could post your whole code, that would be helpful.

 

Something like this maybe?

(defun c:ttt (/ P1 P2 Z1 Z2)
    (setq Pt1 (getpoint "\nSelect First Point"))
    (setq Pt2 (getpoint "\nSelect Second Point"))
    (setq Z1 (nth 2 Pt1))
    (setq Z2 (nth 2 Pt2))
    (setq VAL (rtos (- Z1 Z2)))
  )

 

[Tbag]

I would like to divide distpcc variable in (setq distpcc (rtos(distance pt1 pt2) 2 8))  by 12

so I added (setq distpcc2 (/ distpcc 12 ))

but It does not work. Is it because distpcc is a string and it is not a real number?

Thanks,.

 

 

[Hippe013]

;Original Code:
(setq distpcc (rtos(distance pt1 pt2) 2 8))
(setq distpcc2 (/ distpcc 12 ))


;Just dont convert it to a string, do the following.
(setq distpcc2 (/ (distance pt1 pt2) 12.0))

;Also you should use decimal when dividing

;Test the following 
(rtos (/ 1 12) 2 8)
;versus
(rtos (/ 1.0 12.0) 2 8)

 

Edited June 16, 2020 by Hippe013

[pBe]

10 hours ago, Tbag said:

Is it because distpcc is a string and it is not a real number?

 

Simply put, you cannot perform an arithmetic function on a string stype value.

Unless of course you are working on some other programming language where the symbol  "+" also means concatenate. 

 

 

[Tbag]

On 6/16/2020 at 3:26 PM, Hippe013 said:

;Original Code:
(setq distpcc (rtos(distance pt1 pt2) 2 8))
(setq distpcc2 (/ distpcc 12 ))


;Just dont convert it to a string, do the following.
(setq distpcc2 (/ (distance pt1 pt2) 12.0))

;Also you should use decimal when dividing

;Test the following 
(rtos (/ 1 12) 2 8)
;versus
(rtos (/ 1.0 12.0) 2 8)

 

Thanks so much, very helpful.

 

[Tbag]

On 6/17/2020 at 1:07 AM, pBe said:

 

Simply put, you cannot perform an arithmetic function on a string stype value.

Unless of course you are working on some other programming language where the symbol  "+" also means concatenate. 

 

 

Thanks. makes sense.