Selecting points within a certain range of Z coordinates

Hi everyone,

I've used a Elk to get a rough topography (SRTM data attached). What I want to do is sample a group of points that fall within a certain range of Z values (the actual range doesn't matter at the moment, the numbers can be variables). I've tried a few culling options and partitioning the list but I'm not exactly sure how to get the result I want. The output (as displayed in the panel) seems to be sorted following a structured logic despite flattening the point list. Any guidance would be greatly appreciated (still kind of a beginner), thanks guys!

Attachments:

Site_Topography.gh, 4 KB
S33E151.hgt, 2.8 MB

Replies to This Discussion

Permalink Reply by Jesus Galvez on May 6, 2013 at 3:27am

Hi Anthony,

I didn't open your files. Is this what you are looking for?

Attachments:

Dispatch by height.gh, 4 KB

Permalink Reply by Anthony Aziz on May 6, 2013 at 6:58am

Hi Jesus,

Thank you for your prompt response. Yes, this is exactly what I am looking for. I understood most of your script however when I tried applying the same logic to mine I didn't get similar results (because the entire definition failed).

This is mostly because I have a different data tree structure to yours (15 branches with 21 points in each branch). I've been able to extract points from these branches but I can't seem to find an efficient way to decompose each point into its respective XYZ coordinates (keeping in mind I have a total of 315 points). If you could part any wisdom on this issue it would be much appreciated. Thanks once again.

Permalink Reply by Jesus Galvez on May 6, 2013 at 7:29am

I think that is because I used the bang component. You should use the point decomponse component.

It's another matter if you want each branch culled at different values. In that case just graf the inputs, but it's a bit tedious to have a gene pool (set of sliders) with a slider for each branch. Maybe a rule or condition of some sort is better.

Attachments:

Dispatch by height 2.gh, 5 KB

Permalink Reply by Anthony Aziz on May 7, 2013 at 4:30pm

Apologies for the late reply. Got it working yesterday this definition made more sense to me (I was initially trying to run the tree structure I had through the bang component by adding inputs in the panel and outputs to the component, I must say it got a little out of hand). Thank you for your help!

Permalink Reply by Armano Papageorge on October 16, 2017 at 1:47am