nodes

问题 I have created a collapsible tree to represent some biological data. In this tree the size of the node represents the importance of the node. As I have a huge data and also the sizes of the nodes vary,they overlap over each other. I need to specify the distance between the sibling nodes. I tried tree.separation() method but it didn't work. Code is as follows : tree.separation(seperator); function seperator(a, b) { if(a.parent == b.parent) { if((a.abundance == (maxAbd)) || (b.abundance ==

问题 I need to convert a shapefile (ESRI) of roads type SpatialLinesDataFrame in a neural network in R. I do not know how to remove nodes or vertices of the shape. Determine the length of each edge between nodes. With these parameters I can create the network using the packet (network). Summary: Input shapefile for the igraph network in R. Thank you from the South of Chile. 回答1: Here is a try -- library(rgdal) library(igraph) dsn <- system.file("vectors", package = "rgdal")[1] sl <- readOGR(dsn

问题 This question already has answers here : What is a NullPointerException, and how do I fix it? (12 answers) Closed 4 years ago . So I been trying to implement LinkedList, Stack, Queue in Java. For each one i'm using a node class such that, now I don't really want to discuss how my implementation is since I am aware there are better ways to do it, I just want to focus on my question. public class Node<E> { private E data; private Node<E> next; private Node<E> prev; public Node(E data) { this

问题 I defined in python some shapes with corresponding corner points, like this: square = [[251, 184], [22, 192], [41, 350], [244, 346]] triangle = [[250, 181], [133, 43], [21, 188]] pentagon = [[131, 37], [11, 192], [37, 354], [247, 350], [256, 182]] Then, I make use of NetworkX package to create a Graph: G = nx.DiGraph() Then, I create a node in the graph for each shape: G.add_node('square', points = square, center = (139, 265)) G.add_node('triangle', points = triangle, center = (139, 135)) G

问题 Referring to the image above. I have a Red Node at the center of the screen with a distance of 1.0 unit (1 meter away) [See iPhone Portrait Top View] What I do is I capture a screenshot of the iPhone screen and the resulting image is 750 x 1334 pixels [See iPhone Portrait Front View] sceneView.snapshot() What I want to do is put 4 Red Square Nodes located on the four sides of the iPhone screen relative to the Red Circle (at the dead center of the screen). I am making this to mark where I did

问题 i'm working with treeview in JavaFX, I want to know how it is possible to differentiate nodes for a type, I mean, I have the next structure: 1.-Agent 1.1-Use Case Diagram 1.1.1-UseCase1 1.1.2-Description 1.1.3-Activities Diagram 1.2-UseCase2 1.2.1-Description 1.2.2-Activities Diagram 1.3-Models 1.3.1-AgentModel 1.3.2-Services 1.3.3-Comunication 2-Agent2 ... That is just an example of how the tree looks like, but the thing is that every agent, use case diagram and models have different

问题 So I've been playing around with Nodes and keep running into this error when I try to test it. If I use Parentheses I get this Error on list. - "Expression must have class type!" If I don't use Parentheses I get this Error on list , insert and display - "this is inaccessible." This happens when Declaring my LList in Main(). What's going on and why is this? My Driver #include "LList.h" #include <iostream> using namespace std; int main() { LList<int> list; bool test = list.insert(5); list

问题 i have DX treeList, it has some functionality like copy, paste, delete and so on. How to do in C# code, to change some Node color to change to some other color? 回答1: You could take a look here The appearance of individual cells can be customized by handling the TreeList.NodeCellStyle event. This event is fired for each cell before it's painted. The other way to change the appearance of cells is to handle the TreeList.CustomDrawNodeCell event. Note that changing the appearance of elements via

问题 I'm trying to force nodes into different clusters in force layout based on a certain attribute in the data like "group." I'm adapting the code from Mike Bostock's multi foci force layout example (code, example) and I've been successful in adding in my own data but I haven't been able to specify how many clusters there are and how to assign a node to a cluster. I'm relatively new to d3 and JavaScript and I haven't been able to find many examples of multi foci applications. Here's my d3 code,

问题 The objective of my code is to get each seperate word from a txt file and put it into a list and then making a binary search tree using that list to count the frequency of each word and printing each word in alphabetical order along with its frequency. Each word in the can only contain letters, numbers, -, or ' The part that I am unable to do with my beginner programming knowledge is to make the Binary Search Tree using the list I have (I am only able to insert the whole list in one Node