Re: User-defined functions in macro

Posted by Wayne Rasband-2 on Dec 04, 2018; 11:13pm
URL: http://imagej.273.s1.nabble.com/User-defined-functions-in-macro-tp5021531p5021532.html

> On Dec 4, 2018, at 5:31 PM, Aleksandr Mironov <[hidden email]> wrote:
>
> Dear Listers,
>
> I think I have rather limited understanding of how user-defined functions are working and need some help.
> My macro should have procedure function and initialization function to set up parameters for the procedure.

Use ‘var’ statements to declare global variables, for example:

   var x, y;

   init(1,2);
   type();

   function init(x1,y1) {
      x=x1;
      y=y1;
   }

   function type() {
      print(x,y);
   }

-wayne

> I have tried to do this in the following way (just simplification):
>
> x1=1;
> y1=2;
>
> Init(x1,y1);
> Type(x,y);
>
> function Init(x1,y1) {
> x=x1;
> y=y1;
> }
>
> function Type(x,y) {
> print(x,y);
> }
> ------
>
> But I got the error "undefined variable in line 5", which is "x" in function "Type".
> I am definitely doing something wrong, but do not understand what.
>
> Sincerely,
> Alex

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