# Questions tagged [data-visualization]

Plotting data graphically, static or interactive.

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1 vote
40 views

### Python fractal tree generators

I wrote the scripts several days ago, they do exactly what I intended, but the performance is not very good, I am still stuck on for loops and don't know how to vectorize things, I wrote both scripts ...
• 1,656
42 views

### Colored bar plots with confidence intervals

I needed to create a bar plot that show: the mean from some series; them 95% confidence interval; and, bars might be colored blue if they are definitely above this value (given the confidence ...
1 vote
63 views

### Show different concentrations on scatter plots with different colors [closed]

I have an app which parses data files on the clients browsers and displays a scatter chart. This is an example of a scatter chart with 10,000 data points: This is an example of a scatter chart with 1....
• 221
1 vote
62 views

### A collection of Python functions that fill a given region with rectangles

These are what I was working on in the last few days, I wrote a bunch of functions that fill a given region with rectangles of different colors. The functions can: Randomly split a region into sub ...
• 1,656
42 views

### Plot a 2D vector field with radial symmetry in Python

I computed a 2D vector field U = (u(x,y), v(x,y)) with radial symmetry, parametrized as (u,v) = a(r) (x,y) + b(r) (-y,x), where a(r), b(r) are given as solution of an IVP which I solved using ...
• 151
209 views

### Formatting a table using unicode symbols in python

The goal of the project is to take in input for a data, perhaps in the future as a csv, then print it out using UNICODE box-drawing characters. The main function ...
• 151
54 views

### A Python 3 script that generates art using matplotlib

I am always super interested in both science and art, science and art are two different ways to describe the objective reality, they are two sides of the same coin, in many areas they overlap, and ...
• 1,656
52 views

### Call-flow graph from Python abstract syntax tree

Below is my code for building a call-flow graph from a Python abstract syntax tree. I'm not satisfied with it because the algorithm is very complicated. Perhaps much more complicated than it needs to ...
• 1,250
1 vote
57 views

### Python Sorting Algorithm Visualizer with Pygame

So I've written a Sorting Algorithms Visualizer according to this tutorial, but made some changes and add some features of my own. The visualization is made with Pygame (Which I never used before). ...
• 181
392 views

### Draw a 2d graph using slashes

Given a list of integers a 2D graph has to be plotted taking 1st, 3rd, 5th, ... numbers as upward slope and 2nd, 4th, ... numbers as downward slope. I have used a Python list to do it. Is there any ...
64 views

### Cryptomarket data visualization

For a hobby project I want to visualize the current crypto market in bubbles. The idea is to clone cryptobubbles.net. I've already made a prototype at the moment, but the frames are on the low side. ...
1 vote
24 views

### Batch generating histograms of images in Matlab

I am attempting to plot histograms for batch of images in Matlab. The file structure of input images and the experimental implementation are listed as below. File structure of input images The matlab ...
• 3,546
84 views

### Three-dimensional DCT spatial frequency components illustration

I am attempting to make three-dimensional discrete cosine transformation spatial frequency components illustration. The 3D cubes is used to present the level of each coefficient. The more bright the ...
• 3,546
132 views

### R ggplotly with hovermode = "x unified"

I managed to get this ggplotly graphic: It uses the layout option hovermode = "x unified" (see https://plotly.com/r/...
46 views

### Creating table for placing images in LaTeX

I am attempting to create a table for placing images in LaTeX. The first column is the (image) index, the second and third columns are images from different folder. For example, in the row with index =...
• 3,546
86 views

### Javascript Word Vectors Demo

This is my WIP attempt at an open-source web demo for exploring word vectors as part of my research. The functionality will be explained separately from the site. It is also my first time using HTML, ...
• 818
53 views

### Comparing global sales of video game publishers

I am trying to create a function which can visualize(compare) two items of 'Platform', 'Genre' and 'Publisher' according to the 'Global_Sales' in different 'Year'. The DataFarame looks like: Code: <...
181 views

### Simplify a complex KQL Query

The situation is, I have two fields in a database (or that can be derived) - when the message was received (Received, of type ...
1 vote
151 views

### Vega lite plot rendering with Yew (rust + wasm)

I wanted to render some Vega plots in a rust+wasm web application I've been building with Yew. I'm a bit new to Rust, so I'm looking for feedback on runtime safety and stylistic issues. I was ...
• 111
180 views

### Sinewaves and FFT plotter

I am trying to code a sin wave with 5 sliders: frequency, amplitude, phase change, number of data points, and time. I am currently trying to link my phase change slider with my graph so that it ...
• 91
50 views

### GNUPlot Code for Plotting Three Dimensional Data

I am trying to plot three dimensional (multiple plane) data onto figures with various perspective view. The input data is tab-separated values in multiple file, and each file represent each plane. The ...
• 3,546
1 vote
24 views

### normal distribution line does not show up when plotting [closed]

I am plotting a distribution of 10,000 samples of sum of 100 poisson variables, and overlaying that distribution of the approximate normal distribution. However, the normal distribution line does not ...
• 111
829 views

### Converting location names into country names in pandas dataframe

I have a dataframe df such that: print(df['user_location'].value_counts()) ...
• 239
317 views

### Sorting algorithm visualizer in C++ and SDL2 Improved

Original post: Sorting algorithm visualizer in C++ and SDL2 I followed the advice you gave me and improved my code. I also added two more sorting algorithms. I'm mainly looking for code readability ...
• 879
2k views

### Sorting algorithm visualizer in C++ and SDL2

I finished a sorting algorithm visualizer (for now only uses bubble sort) and this is the code. I'd like some suggestions to improve the memory usage or time elapsed. Built with Cmake and Ninja on ...
• 879
1 vote
44 views

### Sorting Algorithm Visualiser in Javascript

I'm new to Javascript and Web Dev in general, so they'll likely be some conventions that I'm not aware of. I'm at an odds of whether to use Javascript's functional features more. In my opinion it's ...
• 429
69 views

### This code demonstrates the central limit theorem. Is this code "Pythonic"?

I am new to Python, so I am interested in knowing if I am efficiently using python for this project. This program is meant to simulate the Central Limit Theorem. It uses sliders to adjust the number ...
2k views

### Tkinter GUI for running HPLC pumps, real-time data visualization

What I made I used Tkinter to write a GUI to run some HPLC pumps for my work. The application sends some messages to the pumps via serial connections, reads a response, then logs data to a csv file. ...
• 83
46 views

### Advice on path-finding visualisation program

Im looking for some help on improving my code which visualizes path-finding algorithms. The code is working however I know it can be improved. Any suggestions would be appreciated. Github code - ...
874 views

Configs.java ...
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156 views

### Multithreaded HD Image Processing + Logistic reg. Classifier + Visualization

[I'm awaiting suggestions for improvement/optimization/more speed/general feedback ...] This code takes a label and a folder path of subfolders as input that have certain labels ex: trees, cats with ...
• 1,887
1 vote
52 views

### code plots - spatial data

I am an absolute newcomer in R. For my bachelor thesis I worked with spatial data. I did many plots with the normal "points"-function. I already have my results, but would like to improve my code. ...
568 views

### Forex Simulator in Python using pandas and matplotlib

Description: This would make a first part of a currency exchange simulator The first phase includes downloading currency historical data from histdata.com api, plotting given period and given time ...
• 1,887
33 views

### Browser-editable SVG diagrams using JS & SVG.js

[This is my first question to Code Review and it might be a bit too much.] I want to give users the means to draw a simple diagram in the browser, and because it is partly a self-education project ...
• 131
174 views

I've been slowly learning Haskell over the past few months. I made a small module to graph functions using Gloss, and I would like feedback on how idiomatic it is (looking for ways to simplify using ...
• 443
83 views

### Fetch, plot, and send security incident statistics with Excel

TLDR: I don't develop for a living. If someone could point me in the right direction to make my script more readable/pythonic I would appreciate the assistance. In particular I'm struggling with the ...
• 161
115 views

### Query to plot a histogram of song ratings

I wrote code to plot a rating distribution, which looks like this: The most important function is the stats function: ...
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3k views

• 405
708 views

### Draw a spark line with SwiftUI

I am using a set of data points (currently randomly generated), and drawing a line graph inside a box: ...
• 161
31 views

### Kotlin HTML timetable visualisation generator

A Kotlin class that I wrote fairly early on while learning Kotlin which is used by another program to build and generate HTML visualisations of timetables. I'd be grateful for any feedback, especially ...
• 489
257 views

### Mandelbrot rendering code in R

I'm trying out a new continuous histogram coloring method for Mandelbrot rendering in R, and since it requires three loops (three passes), each of them doubly nested, there should be a way to ...
• 163
64 views

### Django project for events of the day, grouped by keywords in common

I have made a website where people write about their day and see it analyzed. In particular, the website takes event titles and groups them together if they have any common words (after stemming the ...
• 391
139 views

### Graphing refugee movements using plotly in Python

I've created a simple data visualization in python that shows the movement of refugees around the world. The code works but I feel it is a bit slow. it takes about 10 s (on my hardware at least) to ...
88 views

### Wiki Link Mapper — A webcrawler which crawls links recursively and prints them into a graph

I would like some suggestions on how to make it better and also if any features that i should add to this Script. I am using beautifulsoup,requests for scraping and networkx for plotting the graph. ...
117 views

### CV written in LaTeX

I've created a CV eager for corrections. Once it is properly written it'd be converted into a template, in order to share it with the community. Can you suggest some starting corrections or ideas? (I'...
159 views

### Plot ROC, PR, and PRI curves in C# using pre-calculated coordinates

I have written a small program in C# to plot ROC, PR (equal to AP) and ...
• 193
1 vote
23 views

### Google ChartWrapper bar formatted table

The end result is a bar formatted table chart that has expanding and minimising rows. The code below works fine but I'd like to know if there is a cleaner way to achieve the same result (see JSFiddle ...
• 11
66 views

### Bar graph of Easter date distribution

Computing Easter for a given year is a classic computational problem. It is also one of the few cases when code seems to just have to live with magic numbers. Alternative to magic numbers: Decoding ...
1 vote
26 views

### Salary-structure report using a web-presentation

I had to create a report which presents the salary structure of a firm. The data needed was provided by the client as CSV-files. I used PHP for the reading and preprocessing of the data. The actual ...
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