All Questions
Tagged with plotting or data-visualization
154 questions
2
votes
1
answer
104
views
draw_if_possible Template Function Implementation for Image in C++
This is a follow-up question for Midpoint Circle Algorithm Implementation for Image in C++, draw_circle Template Function Implementation for Image in C++, SIFT Keypoint Detection for Image in C++, ...
- 5,568
2
votes
2
answers
134
views
Midpoint Circle Algorithm Implementation for Image in C++
This is a follow-up question for draw_circle Template Function Implementation for Image in C++, SIFT Keypoint Detection for Image in C++, difference_of_gaussian Template Function Implementation for ...
- 5,568
6
votes
1
answer
158
views
draw_circle Template Function Implementation for Image in C++
This is a follow-up question for SIFT Keypoint Detection for Image in C++, difference_of_gaussian Template Function Implementation for Image in C++, conv2 Template Function Implementation for Image in ...
- 5,568
2
votes
1
answer
80
views
CSV Data Plotting Program using CsvHelper in C#
This is a follow-up question for CSV Data Plotting Program in C#. I am trying to use CsvHelper to build an application for plotting CSV Data in this post. In the ...
- 5,568
2
votes
2
answers
186
views
CSV Data Plotting Program in C#
I am trying to implement a CSV data plotting program in C#. In the plotting part, I use ScottPlot.NET to perform plotting operation. There are five column in the given CSV file, therefore, I use ...
- 5,568
4
votes
2
answers
332
views
Optimizing Multiple Subplot Visualization and Navigation in Matplotlib
I have implemented a class in Python using Matplotlib for visualizing multiple subplots along with navigation buttons to move between different subsets of data. Each subplot displays a contour plot ...
- 43
9
votes
4
answers
1k
views
Reverse Engineering Data Files (Binary Visualization)
Binary Visualization based on Christopher Domas talk: youtube link and this Russian programmer where I discovered this talk: youtube link.
Algorithm:
Scan the pairs of bytes of a file with a sliding ...
- 9,807
5
votes
1
answer
128
views
Trie Implementation, Graph Visualization and Auto-Completion in C
Given a list of strings (say a text file containing some C symbols: c-symbols.txt), the program can:
Generate a graph of the underlying trie (-p/--prefix can be specified to inspect a
specific prefix ...
- 9,807
3
votes
0
answers
146
views
Image generator using prime numbers in polar coordinates
Related
This is a Python script that generates images using prime numbers up to a given positive integer, it generates prime numbers using the Sieve of Eratosthenes with some rudimentary Wheel ...
- 3,186
2
votes
0
answers
90
views
Python script that generates images using Thue-Morse sequence
In mathematics, the Thue–Morse sequence, or Prouhet–Thue–Morse sequence, is the binary sequence (an infinite sequence of 0s and 1s) obtained by starting with 0 and successively appending the Boolean ...
- 3,186
3
votes
0
answers
49
views
Plot of massless particles on the unstable null circular geodesic
My friend and I were trying to reproduce Figure 4(left), page 7, from the paper "Probing phase structure of black holes with Lyapunov exponents", Guo 2022. We succeeded in reproducing the ...
- 131
1
vote
1
answer
97
views
Create charts after querying database
I'm at the end of the IBM Data Analyst course, and I wanted to ask for a rating of a piece of code I wrote as a solution to its exercises from the final chapter. I know I could write it on the forum ...
- 13
1
vote
0
answers
786
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 ...
- 3,186
3
votes
1
answer
1k
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 ...
- 77
1
vote
1
answer
91
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
0
answers
307
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 ...
- 3,186
5
votes
1
answer
372
views
Compute and plot a 2D vector field with radial symmetry in Python
I computed a 2D vector field \$\mathbf{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 ...
- 171
5
votes
1
answer
957
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 ...
- 233
5
votes
0
answers
183
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 ...
- 3,186
3
votes
1
answer
885
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 ...
- 1,372
1
vote
0
answers
271
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).
...
- 311
7
votes
3
answers
549
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 ...
- 173
3
votes
0
answers
96
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
1
answer
70
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 ...
- 5,568
3
votes
1
answer
138
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 ...
- 5,568
2
votes
1
answer
56
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 =...
- 5,568
3
votes
1
answer
315
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, ...
- 1,184
0
votes
1
answer
73
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:
<...
2
votes
1
answer
270
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 ...
6
votes
1
answer
316
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
2
votes
0
answers
62
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 ...
- 5,568
4
votes
1
answer
1k
views
Converting location names into country names in pandas dataframe
I have a dataframe df such that:
print(df['user_location'].value_counts())
...
- 249
6
votes
2
answers
587
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 ...
- 909
19
votes
1
answer
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 ...
- 909
1
vote
1
answer
90
views
Demonstrate the central limit theorem
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 ...
5
votes
1
answer
5k
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
4
votes
1
answer
61
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 - ...
7
votes
1
answer
1k
views
6
votes
1
answer
180
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 ...
2
votes
1
answer
926
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 ...
9
votes
1
answer
139
views
Frequency analysis for simultaneous dice rolls
My professor told me to optimize my perl code, but he wouldn't tell me what exactly - just make it simpler.
I changed some little things but nothing major. Am I missing something?
The task was:
...
- 131
3
votes
0
answers
59
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
5
votes
2
answers
261
views
Haskell Graphing Module (Gloss)
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
5
votes
1
answer
88
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
5
votes
2
answers
146
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:
...
- 253
12
votes
1
answer
4k
views
Predator-prey simulation
I made a random-walk predator-prey simulation that focuses on individual animals instead of the (maybe) more common array-based approach. I'd like to hear your opinion about this: how could the ...
- 405
5
votes
1
answer
787
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
7
votes
2
answers
427
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 ...
- 215
3
votes
0
answers
69
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
6
votes
1
answer
162
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 ...
