Image mapper Output restrictions

Hello Everyone. I need some help with the output of the image mapper. I Have been able to generate a set of data from the image mapper function. I would like to group the data into 2 different groups. I used the data and applied it to a function to get the values I wanted and mapped it on the points on a surface and drew circles.

My questions is

1.how do i limit the circles radius such that there are only 2 different outputs of 20mm diam and 10mm diameter

2. On a side note for my screen design is there anyway that i can arrange the circles such that it can split up and mapped on the specific panels or would manually moving them or cutting the picture up such that it maps to a panel each.

3. Is there anyways to surface divide and not get points on the edges of the surface?

4. I dont really understand why I need to rotate the picture such that it can map in the same direction I want. Can someone explain or tell my why is it that way. (not really an issue, as I was able to generate the desired outputs but I just want to understand)

Replies to This Discussion

Permalink Reply by David Rutten on February 2, 2015 at 2:51am

http://www.grasshopper3d.com/forum/topics/patterning-circles-with
http://www.grasshopper3d.com/forum/topics/circles-on-grid-image-sam...
It's hard to say, but I'd make sure that each panel is sampled separately. You'll have to generate the correct grids for each panel, but at least it keeps them seperate so you can easily move each panel afterwards using some transform. Alternatively, if each panel contains exactly the same amount of samples, you can separate your measurements into different lists after sampling, using the Partition List component.
You can either trim the surface so that the outer edge is missing (there will be no points outside the trims), or you can use a selection pattern to extract only the inside points. I prefer the latter solution:

See this post for more information on splitting trees.
I don't know either why you need a rotated setup. I'll need to see the file.

Attachments:

split logic.gh, 14 KB

Permalink Reply by Yee Ann, Tan on February 3, 2015 at 11:41pm

Thanks so much David for your reply. I will Definitely give it a try and hopefully get to use this tip in my future designs as well. David , do you have any Recommendations (books ,videos), methods that I can learn more about Grasshopper functions ? I have learnt some of the basic functions but I would like to amp up my knowledge of this software. Thank You again for replying with this degree of detail.

Regards,

Ean (Yee Ann)

Permalink Reply by David Rutten on February 4, 2015 at 3:25am

The good stuff we know about is posted here:

http://www.grasshopper3d.com/page/tutorials-1

Permalink Reply by Yee Ann, Tan on February 11, 2015 at 7:16pm

Thanks so Much :)

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