Path Mapper Help

As a result of a request please find a series of examples for using the Path Mapper component.

The First installment of this is showing the Path Mapper imitating some already existing components. Flatten, Graft, Simplify and Flip Matrix. There is also an additional example showing Integer Divide to which there is no existing component.

For those uninitiated in the dark arts of pathmapper the component can be found on the Sets Tab> Tree Section with the icon of a red cube. Section 8: The Garden of the Forking Path of the Grasshopper Primer 2nd Edition is dedicated to the Tree Structure implemented in GH v0.6. There is an extensive Help file accessed from the 'right click' Context Menu.

UPDATED to correct an error in the Flip Matrix demonstration path_count should be item_count. Plus reflecting the change of the Simplify Component and Additional demonstration of grouping without the Path Mapper

Updated: 2011-04-20

Replace Branches

Not sure if it's right to include this here as its actually encouraging you not to use the Path Mapper, but sometimes there are benefits to being able to keep the definition free from restrictions like the Path Mapper. When a data structure changes the Path Mapper is unable to adapt without user intervention. This is demonstrated in the two Grouping examples above. The Path Mapper method would need the user to manually change the Integer 6 if they ever increased the V Divide, where as the Replace Branches Component will simply update based on its inputs.

I hope to follow this up with some more.....

Attachments:

PathMapper_20110315.ghx, 658 KB

Replies to This Discussion

Permalink Reply by RWNB on April 8, 2011 at 8:57am

which we have deserved it?
i can never have enough from pathmapper. (:

thank you very much.

Permalink Reply by MARIO VERGARA on April 8, 2011 at 10:52am

Thank you very much Danny!!!!

Permalink Reply by Dieter Toews on April 8, 2011 at 12:53pm

wow, i guess i need to look up what modulo does. The Grouping example is great, I can help thinking that being able to input numerical parameters would be a very useful addition to path mapper - I have entered numeric literals into pathmapper boxes MANY times.

Permalink Reply by Danny Boyes on April 10, 2011 at 1:05pm

Hi Dieter,

I should point out that there are methods available to do this without using Path Mapper. Like with the Replace Branches component.

Attachments:

GroupingBySearchReplace.ghx, 142 KB

Permalink Reply by Atsuo Nakajima on April 14, 2011 at 9:46pm

Thank you.

This is what I wanted. Thanks again for excellent share.

Permalink Reply by MD on April 8, 2011 at 1:56pm

Thank you!!

Permalink Reply by TheChosenOne on April 8, 2011 at 3:47pm

Thank you, Danny.

Permalink Reply by Pieter Segeren on April 8, 2011 at 5:20pm

Where is the like/thumbs-up-button for discussions? Very nice Danny:) Thanks.

Permalink Reply by Dedackelzucht on April 12, 2011 at 1:25am

Thank you very much!!! Very good!!!

Permalink Reply by phillip on April 18, 2011 at 5:57am

Hi Danny,

thanks a lot!

I have a different problem I could not find out a nice fix. Maybe you know how to...

In one of the lists I have a null-item. When offsetting the data tree of the null results is different (of course).

I need to match the treestructure though with a different list. If I map it (A;B;C;D;E)-->(A;B;C;D) the null-item will be droped and i can´t match it. Any better solution than the shown for this problem?

Thanks a lot,

Phillip

Attachments:

datatree.JPG, 151 KB

Permalink Reply by Danny Boyes on April 18, 2011 at 6:20am

The method you've got is the right way to go about doing it but you've missed an opportunity to do it with one instance of the Path Mapper.

The Path Mapper is able to apply several Lexical mappings at once, rather than separate these into two Path Mappers you just need to go to the next line in the Editor window.

Because Path Mapper is looking for {A;B;C;D;E} in the first line it will ignore all instances of {A}, {A;B}, {A;B;C} etc. So you can put in any additional ones below.

But did you actually need to use the Path Mapper here, would GH not data match unless you did it?

Permalink Reply by phillip on April 18, 2011 at 7:17am

great. thanks!

yes i do have to use it, otherwise it will not intersect correctly.

i will also try to solve it the otherway around with cutting of empty branches by the use of the clean function.

best, p