tree

问题 I would like to plot a tree resulting from glmtree (partykit package). Unfortunately, the terminal nodes are overlapping and the labels of the graphs are no longer displayed properly. The code that generates the tree is this one: library(partykit) library(aVirtualTwins) data(sepsis) attach(sepsis) data <- cbind(y = survival, trt = as.factor(THERAPY), sepsis[,3:13]) formula <- as.formula(paste("y ~ trt", paste(names(sepsis[,3:13]), collapse = " + "), sep = " | ")) fit <- glmtree(formula, data,

问题 Given a tree, what's the easiest way to calculate the sum of all children at a given node? Say a tree like this... The red values represent the sum of the node and its children. Let's say the node structure look like this (an example): class Node: def __init__(self, name): self.children = [] self.weight = 100 self.weight_plus_children = 295 How can I do this in an efficient, single pass (in Python)? Thanks! 回答1: Just judge if a node is a leaf and add the sum to the weight, here is an example:

问题 In my C# i change loaded html, and need to get html document as plain text. But whenever i append new node to one of document's node, the inner html of root node doesn't change, even if the new node is successfully added. After debugging i noticed that only the parents of new node has the change in their InnerHtml property, for example: HtmlDocument doc; HtmlNode root doc.DocumentNode; HtmlNode node2 = root.ChildNodes[1]; HtmlNode newNode = new HtmlNode(...); node2.Append(newNode); Having:

问题 In my C# i change loaded html, and need to get html document as plain text. But whenever i append new node to one of document's node, the inner html of root node doesn't change, even if the new node is successfully added. After debugging i noticed that only the parents of new node has the change in their InnerHtml property, for example: HtmlDocument doc; HtmlNode root doc.DocumentNode; HtmlNode node2 = root.ChildNodes[1]; HtmlNode newNode = new HtmlNode(...); node2.Append(newNode); Having:

问题 People! It's my first question here as junior frontend dev. I have function (https://jsfiddle.net/kmjhsbt9/) which transforms a flat array like this : const filePaths = [ 'src/lib/git.js', 'src/lib/server.js', 'build/css/app.css', 'externs/test/jquery.js', ]; into object tree like this: [ src: { lib: { git.js: 'file', server.js: 'file', } }, build: { css: { app.css: 'file' } } ..... ] Please, help me to understand how I can rewrite the function so that it outputs the result in this format: [

问题 In R, str() is handy for showing the structure of an object, such as the list of lists returned by lm() and other modelling functions, but it gives way too much output. I'm looking for some tool to create a simple tree diagram showing only the names of the list elements and their structure. e.g., for this example, data(Prestige, package="car") out <- lm(prestige ~ income+education+women, data=Prestige) str(out, max.level=2) #> List of 12 #> $ coefficients : Named num [1:4] -6.79433 0.00131 4

问题 From http://cbio.ufs.ac.za/live_docs/nbn_tut/trees.html Let's create a python class to represent a tree. We need some way to store data in a node, and some way to indicate any child nodes, or subtrees. class node(object): def __init__(self, value, children = []): self.value = value self.children = children Whoa! That seems way too easy... but believe it or not, it does the job. Let's use our new class to store our family tree... tree = node("grandmother", [ node("daughter", [ node(

问题 does anyone know of a way I can turn a directory path into a tree as follows (using Python 2.7)... <div> <p class="toggle">item one</p> <div class="child"> <p>contained</p> <p class="toggle">item</p> <div class="child" hidden="true"> <p>inner</p> </div> <p class="toggle">item</p> <div class="child" hidden="true"> <p>inner</p> <p class="toggle">wow</p> <div class="child" hidden="true"> <p>waaay down</p> <p>somefile.py</p> </div> </div> <p class="toggle">item</p> <div class="child" hidden="true

问题 I'm still having a great deal of difficulty understanding QAbstractItemModel's representation of items. There are two methods that return QModelIndex items that just aren't making any sense to me. QModelIndex QAbstractItemModel::index(int row, int column, const QModelIndex& index) is the first. What is the view passing to this function? I index the specific tree item to have an index created for? If so, what's the point of the function? Why not just return index? What do row and column

问题 I'm still having a great deal of difficulty understanding QAbstractItemModel's representation of items. There are two methods that return QModelIndex items that just aren't making any sense to me. QModelIndex QAbstractItemModel::index(int row, int column, const QModelIndex& index) is the first. What is the view passing to this function? I index the specific tree item to have an index created for? If so, what's the point of the function? Why not just return index? What do row and column