For questions about the data structures known as trees.
32
votes
0answers
736 views
How to construct a treemap using non-rectangles?
I've written the standard version of a tree map (a graphic that shows nested data) and I'm looking to improve on this layout by switching to different types of polygons or perhaps circles. Can anyone ...
19
votes
3answers
322 views
How can I regroup elements in a list into a tree based on their values?
I have a list of elements in an outline, here is an example that is only 3 levels deep:
...
16
votes
3answers
673 views
How to generate a random tree?
Is it possible to generate a random tree without explicitly constructing a random adjacency matrix that satisfies tree properties? How about a random directed tree?
Edit: incredible answer by ...
13
votes
1answer
259 views
Visiting nodes in a tree bottom up
I have a problem that can be reduced to this one:
Suppose I have an unbalanced (almost random) tree. The leaves of the tree have one property already set, and all vertex (including the leaves) have ...
10
votes
1answer
179 views
Transform an expression into a graph that can be plotted with TreeGraph (not TreeForm)
I would like to plot an expression (like TreeForm does), but using the new TreeGraph functionality.
...
9
votes
4answers
169 views
Leave expression tree formatting the same when a replacement rule is applied
If I type e1 := 3 x + 2 (1 + y) z // TreeForm, I get an expression tree. If I then type e1 /. x -> 3, I get another ...
7
votes
3answers
292 views
Visualizing directories
How do I plot the content of a directory and all its subdirectories into infinity using TreeForm? I've tried using a mix of FileNames, StringSplit and GatherBy but in the end I couldn't find even a ...
6
votes
2answers
166 views
Truncate TreeForm to show only the top
For some expressions, TreeForm may grow very long. I'm only interested in the top levels of the expression. How can I get the tree form of only the first levels an ...
4
votes
2answers
193 views
Access pairs of vectors, rather than the matrices, in partitioned data structure at a levelspec
I have some old code to analyze correlation between 2 time series by looking at windows of different lengths shifting across the time series data. The code:
gets 2 sets of time series data (in ...
3
votes
1answer
102 views
How to make a simple tree yourself with defined distances for each generation?
I'm trying to make a function that generates a tree for spin spin analysis in spectroscopy. I though it would be pretty easy, but I'm totally stocked.
The tree should look something like this:
...
2
votes
1answer
170 views
Changing some stuff to Kruskal's Algorithm
I'm trying to modify this algorithm:
http://demonstrations.wolfram.com/ConnectingTownsUsingKruskalsAlgorithm/
The thing is that I want to receive a Graph (declared outside, with all its vertex, edges ...
1
vote
1answer
66 views
Table/Tree of values
My question:
Is there a way to create a tree of values?
Something like the output of the command TreeForm,
but with values in the nodes?
Why do I want this?
I'm trying to do a complete program to ...
0
votes
0answers
39 views
tree of values representation
Main Question
Is there an efficient way to output a tree of values similar to the output of TreeForm?
Something like
...
