visualization

问题 I found this excellent example and sample code for drawing directed graphs - http://bl.ocks.org/cjrd/6863459 However, the graph-creator.css file defines a global style for all nodes. What if I want to assign different styles to certain "special" nodes from all other nodes (I want them to be different shapes and also differently colored and if possible also a different transparency). How would I modify this code to add these node specific effects? 回答1: You can choose to append different shapes

问题 Using d3js, I need to draw(append) circles, not all together but with less then one second of distance. So one circle in x position, another one in y position after 0.5 second. 回答1: Use setTimeout. Here is the working code snippet. var nodes = [{ "name": "6", "x": 207, "y": 305 }, { "name": "7", "x": 404, "y": 310 }, { "name": "8", "x": 420, "y": 510 }, { "name": "9", "x": 540, "y": 126 }, { "name": "10", "x": 350, "y": 150 }, { "name": "11", "x": 177, "y": 320 }, { "name": "12", "x": 200, "y

问题 I have a pass traffic data between players, here's the data, first column and first row indicate the Player Numbers. I want to visualize this data like Uber Rides. I think it was built with Chord Diagram from Bostock's. Since I almost have no experience in JavaScript, I just don't know where to begin. How can I achieve something like this? 回答1: Here is what i got with your data I just replaced the matrix array with your array [2,3,1,0,0,2,0,6,5,2,5,0,3], [0,7,2,0,4,7,0,1,2,0,3,0,2], [0,0,4,1

问题 How can I get(Is it possible?) all audio frequencies are now playing in the system for writing some sound visualizer? Is there any library c++ or c#? Thanks in advance 回答1: Basic steps are: apply window function to block of samples (e.g. 1024 samples, Hanning window) perform real-to-complex FFT on windowed samples take magnitude of each FFT output bin ( sqrt(re * re + im * im) ) identify peaks in resulting power spectrum estimate the bin index of each peak corresponds to the frequency of that

问题 How can I get(Is it possible?) all audio frequencies are now playing in the system for writing some sound visualizer? Is there any library c++ or c#? Thanks in advance 回答1: Basic steps are: apply window function to block of samples (e.g. 1024 samples, Hanning window) perform real-to-complex FFT on windowed samples take magnitude of each FFT output bin ( sqrt(re * re + im * im) ) identify peaks in resulting power spectrum estimate the bin index of each peak corresponds to the frequency of that

问题 We want to be able to create log files from our Java application which is suited for later processing by tools to help investigate bugs and gather performance statistics. Currently we use the traditional "log stuff which may or may not be flattened into text form and appended to a log file", but this works the best for small amounts of information read by a human. After careful consideration the best bet has been to store the log events as XML snippets in text files (which is then treated

问题 I've been tinkering with the RGL package to figure out how to plot a plane from an equation in R, to no avail. For example, I would like to visualize the following plane: 1x + 0y + 0z = 2 0x + 1y + 0z = 3 0x + 0y + 1z = 4 It seems the rgl's planes3d function only adds a plane to an existing 3D plot. 回答1: Here is a simple example: library(rgl) # Create some dummy data dat <- replicate(2, 1:3) # Initialize the scene, no data plotted plot3d(dat, type = 'n', xlim = c(-1, 1), ylim = c(-1, 1), zlim

问题 In another question I asked about visualizing hierarchical data stored in a table in an SQL Server database. I found a way to visualize the whole hierarchy using GraphViz, with some plumbing in T-SQL and Powershell. I want to use a visualization like this to debug an application that uses similar data. Visualizing everything is fine for the small example hierarchy. But in a hierarchy of thousands, this is overwhelming. When I debug my application, I usually look at only a small set of nodes

问题 This is following my previous post: How to measure the area of a polygon in ggplot2? What I would like now to do is to use the resulting radar charts as data points in a totally separate scatterplot or maybe save the object and use it later on graphs to depict the shape of the actual data. I have many files and they typically look like this. They range from 1 to many in col number and the fractions are always in descending format. ie #1 always contributes most in any given file. myfile 01 0

问题 I know that I can do logarithmic scales with bokeh using the plotting API: p = figure( tools="pan,box_zoom,reset,previewsave", y_axis_type="log", y_range=[0.001, 10**22], title="log axis example", x_axis_label='sections', y_axis_label='particles' ) However, I can't figure out how to get this to apply to high level charts such as Bokeh.charts.Bar. In general I'm having a lot of trouble grokking what to relationship is between a Chart and a figure . Can anyone point me to some documentation on