Need help fast with list radius of circles in image sampler

Replies to This Discussion

Permalink Reply by David Rutten on March 29, 2011 at 3:52am

You could use a very complex expression, like so:

 

If(r <= 15, 12, If(r <= 20, 18, If(r <=30, 25, -1)))

 

It's not exactly the same as your logic, but it first tests the radius to see if it is smaller than or equal to 15. If it is, the function will return 12. If it isn't, then the radius is compared to 20, and if it's smaller than or equal to 20, the function will return 18. etc.

 

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by David Rutten on March 29, 2011 at 4:00am

This is another method. A bit less geeky but also somewhat less well defined. Values on the transition between two adjacent intervals might give unpredictable results.

 

--

David Rutten

david@mcneel.com

Poprad, Slovakia

 

Attachments:

• MapValuesOntoIntervals.ghx, 119 KB

Permalink Reply by Philipp on March 29, 2011 at 3:55am

try this  http://www.box.net/shared/m4yv718olv

Permalink Reply by simon.mouritsen on March 29, 2011 at 4:27am

Thank for all the help

But it still doesn't work for me

 

I have uploaded the files

 

btw i'm new at this

Attachments:

• Need_help.ghx, 94 KB
• BITMAP STOR BIT.png, 125 KB

Permalink Reply by a4chitect on March 29, 2011 at 4:36am

i have made a foolproof example, with comparison by david (as posted above)

Permalink Reply by a4chitect on March 29, 2011 at 4:54am

here is your modified file

*removed due to a found bug*

Permalink Reply by David Rutten on March 29, 2011 at 5:03am

Behold the power of Expressions!

 

--

David Rutten

david@mcneel.com

Poprad, Slovakia

 

Attachments:

• Need_help.ghx, 71 KB

Permalink Reply by simon.mouritsen on March 29, 2011 at 8:55am

Thanks a lot guys..

It was about the same thing I was doing, except the multiplications wasn't working for me.