16,777 questions
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Create custom Pivot table with tree structure
I created a pivot table like the one in the image.
The data part was done this way
The pivot representation works for me because for each product, line, or family (iPad->iPad Air->iPad Model), ...
2
votes
1
answer
98
views
Display game variation tree using compact vertical layout
I want to create a multi-line string that can be printed out or displayed via curses. This string displays the moves and variations of a go/weiqi/baduk game from an sgf file using unicode characters. ...
- 315
0
votes
1
answer
62
views
How can I compare a tree with different node types to a list of courses to see which courses have been completed and which haven't?
I'm working on a transcript analyzer personal project and I'm having an issue comparing the courses that are read in from the transcript with the required corses. The required courses are stored in a ...
-2
votes
1
answer
67
views
Treelib does not show hierarchical tree node data [closed]
Using tree package treelib in Python I define a small tree that is slightly modified from the description for command show:
from treelib import Tree
tree = Tree()
tree.create_node("Root", &...
- 194
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votes
0
answers
39
views
Tree (closure table) does not save children relations to _closure table
I have the following entity:
@Tree('closure-table')
@Entity()
@Unique(['target', 'slug'])
export class SupportNodeEntity extends TreeNodeEntity {
@Column({ type: 'enum', enum: SupportNodeVisibility, ...
- 367
0
votes
4
answers
563
views
Answer sum of values on tree path, with updates, efficiently
You are given an unweighted tree with N nodes and each node starts with value 0. There will be Q queries. The 1st type of query will change the value at a node to a new value. The 2nd type of query ...
- 67
1
vote
1
answer
139
views
LeetCode 199. Binary Tree Right Side View constant memory complexity
I'm trying to solve LeetCode 199.
Given the root of a binary tree, imagine yourself standing on the right side of it, return the values of the nodes you can see ordered from top to bottom.
I've ...
- 519
2
votes
1
answer
159
views
How to ensure correct destructing of a non-regular tree?
I need a function that parses a string to create a non-regular tree and returns a pointer to its root. In the case of a parsing error, an exception is thrown. My current attempt leaks memory.
How to ...
- 45
0
votes
0
answers
44
views
Ant Design Tree keeps scrolling with the mouse pointer even after releasing the mouse (during DnD), and also when the pointer is outside the tree
Description:
I'm using the Ant Design Tree component with drag-and-drop enabled. During drag, the tree auto-scrolls based on the mouse position — which is expected. However, it keeps scrolling even ...
- 3,008
2
votes
2
answers
138
views
How to make a tree support dark/light mode?
All the pages I have been able to add support for dark/light mode. One page has a tree and everything I tried failed and most changes made the formatting (text, alignment, etc.) change, for the worse. ...
- 123
0
votes
0
answers
67
views
How to construct an AVL tree from a set of keys: 10, 20, 5, 4, 3, 2, 30, 40?
I'm trying to understand how an AVL tree is built from a sequence of integer keys. The keys I have are:
10, 20, 5, 4, 3, 2, 30, 40
I want to construct the AVL tree step by step and see how rotations ...
2
votes
1
answer
115
views
Get matrix of branch actual length to species tips
Based on this example I have a phylogenetic with species at the tip and branch lengths (that are not necessarily 1). My goal is to calculate phylogenetic diversity multiplying a species community ...
- 3,841
0
votes
1
answer
40
views
Click Events of JSX Elements rendered programatically in the dom not setting state right
This is a weird one but I'm a major novice when it comes to React, I'm probably just doing this completely wrong but I'm trying to dynamically render a content tree. It starts with a single node and ...
- 4,931
-2
votes
1
answer
132
views
Constrained MST: Find a spanning tree of weight ≤ T that minimizes the number of red edges
We are given an undirected graph ( G = (V, E) ), where:
( V ) is the set of vertices (or nodes),
( E ) is the set of edges.
Each edge ( e ∈ E ) has two attributes:
A weight ( w(e) ), which is a ...
- 103
1
vote
1
answer
137
views
Phylogenetic Tree with ggtree - Outgroup branch display
I am struggling with a R script I made to visualize a phylogenetic tree obtained after aligning (mafft), curating (bmge) and tree inference using FastTree and a GTR model.
My problem is how the ...
- 13