nparse function

[Moshe-A]

hi guys,

it's been a while since i visit here to give my help (soon i'll be back) but now i have one of my own  😀

i need a function to parse the value (coming from sysvar cannoscalevalue) and i like it to be recursive.

it's now getting 2 args:

1.  n (which is cannoscalevalue can be 0.1 0.01 0.001 etc and each iteration is multiplied by 10) 

2.  s (each iteration it also multiplied by 10)

so here is what i have:

(defun nparse (n s)
 (cond
  ((>= n 1) s)
  ((nparse (setq n (* n 10)) (setq s (* s 10))))
 )
)

uses: (nparse 0.01 1)

but i do not like the 1 arg for s to reset, wonder if someone can come up to a version to drop the 1.

thanks in advanced

Moshe

[cadffm · Accepted solution]

I don't understand this limited function, what do you expect with this?

I am talking about your cannoscale sample ONLY.

cannoscalevalue is a factor, so you can have all floats reals and floats a value,

your functions works only for scalefactor less 1 and all greater one reverts 1 as value.

I can't understand what you want to do with this result / with this function?

I would understand a function like this:

(defun nparse (n / s)
 (/ 1.0 n)
)

Please take a minute to explain me, what you want to do with your function and

why you want a 1 if the scalefactor is greater than 1

and why you want 100 as result if the scalefactor is 0.02 for example.*

[Moshe-A · Accepted solution]

wow, in 3 words @cadffm : YOU ARE BRILIANT 👋

(/ 1 n) just covers everything.

what i wanted to know is the actual running linetype scale as in my understanding when msltscale in on...in model space the actual ltscale is the annotation scale e.g :

(* (1 / (getvar 'cannoscalevalue)) (getvar 'ltscale))

Am i right?!

thank you very much

Moshe

[dbroad]

Like @cadffm , I'm puzzled.

(getvar "cannoscale") will get you the name for the current annotation scale.

(/ 1.0 (getvar "cannoscalevalue")) will get you the denominator of 1:n ratio of the current scale.

Example:

Command: (getvar "cannoscale")
"1-1/2\" = 1'-0\""

Command: (getvar "cannoscalevalue")
0.125

Command: (/ 1.0 (getvar "cannoscalevalue"))
8.0

So that is the same as a ratio of 1:8.0

[Moshe-A]

@dbroad  hi,

(getvar "cannoscale") 

(/ 1.0 (getvar "cannoscalevalue"))

it is not exactly the same,  (getvar "cannoscale") returns a string the name of the scale list defines in SCALELISTEDIT and you can not relay on that, users often make mistakes. 

[dbroad]

I think I made it clear that they were different but related.  See the command return values.  All you needed was (/ 1 n) where n was the annoscalevalue.