Re: [ferret_users] [ferret] qualifier modulo for polygon command

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi Patrick,
Polygon already has some modulo capabilities, if you give the 
appropriate variable the units of longitude. (this did not work 
correctly before version Ferret 5.8.)

  let xtriangle = ysequence({-1,0,1})
  let ytriangle = ysequence({-1,1,-1})
  let xpts = 30*randu(i[i=1:10])
  let ypts = 30*randu(1+i[i=1:10])

  let/title=longitude/units=degrees_east xt=xtriangle+xpts
  let/title=latitude/units=degrees_north yt=ytriangle+ypts
 
  set view upper
  poly xt,yt, i[i=1:10]
 
  set view lower
  let xpts = 360+30*randu(i[i=1:10])
  poly xt,yt, i[i=1:10]

Ansley

Patrick Brockmann wrote:

> Hi all,
>
> I really appreciate the exsistance of the qualifier /modulo for the 
> SHADE command
> to draw modulo replications of a field for curvilinear data.
> Is it possible to get the same for the POLYGON command ?
> Thanks
> Patrick