Matplotlib is a plotting library for Python, built on NumPy and often used interactively with IPython. Its compact "pyplot" interface is similar to the plotting functions of MATLAB®.
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55 views
Plot timings for a range of inputs
When writing Code Review answers, it becomes often necessary to measure how long the modified code takes vs how long the OP's code takes. I needed a nice way to visualize this as a function of the ...
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0answers
69 views
Plotting polynomials roots
NOTE: See follow up to this question here
I created a simple python script to plot quadratic, cubic and quartic polynomials with integer coefficients between -4 and 4. It uses numpy to find the roots ...
1
vote
1answer
64 views
Euler Method Harmonic Oscillator
I have written very simple Python code to solve the simple harmonic oscillator using Euler method, but I am not sure if the program is correct or not. I would be very grateful if anyone can look at my ...
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0answers
22 views
matplotlib get_legend_handles_labels always return empty
I have a problem when adding elements to the same figure.
The problem is with the legend.
At each iteration I add elements and the corresponding legend.
But I want the legend to include all the ...
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vote
0answers
59 views
Applying Model-View-Controller to Tkinter/matplotlib Application
I'm a novice programmer. I am preparing to refactor a large project of mine to follow a model/view/controller design pattern, with separate modules for each (and eventually separate modules for the ...
2
votes
1answer
29 views
Create boustrophedon path in Matplotlib
I have following code that creates parallel swathes of specified sizes. Can someone suggest a better way of doing this?
...
5
votes
1answer
43 views
Plot president's approval rating of president with lowest approval rating by day of presidency
I was curious which U.S. president had the lowest approval rating for each day in their presidency. For example, which president had the lowest approval rating on day 42, and what was the rating. I ...
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vote
0answers
26 views
MCMC Metropolis Hastings for German Tank Puzzle
I have implemented the following MCMC algorithm for the german tank puzzle
found here
I just want to make sure everything is legit and that I am not getting the right answer by chance.
...
3
votes
1answer
52 views
Reaching the philosophy wiki page - Follow Up
This is a follow up to my original post:
I've written a class that will start from a random Wikipedia page, then choose the first link in the main body, and then navigate following the links until ...
3
votes
1answer
27 views
Reaching the philosophy wiki page
I've written a class that will start from a random Wikipedia page, then choose the first link in the main body, and then navigate following the links until it finds the Philosophy page. When I run the ...
2
votes
1answer
172 views
Function Plotter GUI in Tkinter and Matplotlib
I have been working on plotting time varying functions in Python as my most recent project, and would love input on optimization, proper Tkinter form, and anything that stands out like a sore thumb.
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3
votes
1answer
73 views
Coordinates of 2D points zoomed in/out
This might be a simple issue that I am overcomplicating, but I've spent quite some time reading about polygon scaling and I've come to the conclusion that it is not precisely what I need.
Given a set ...
9
votes
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85 views
Time-scrolling interface in matplotlib
I've create a simple interface for viewing a time-series as it changes over time in matplotlib. You can pause, reset or click/drag on the time-line to change the view. Have I used the matplotlib API ...
3
votes
1answer
87 views
Estimating Pi with random darts on dartboard - high complexity issues
I've been trying to write nice snippet of code to simulate pi estimation by randomly throwing darts on a dartboard. While running the following code on high but reasonable numbers my mac doesn't plot. ...
11
votes
1answer
77 views
Plotting a rectangular prism
I'm making a rectangular prism function who's results look like this:
I think I can reduce the amount of code I'm using by somehow using np.meshgrid more ...
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0answers
186 views
Plotting the Mandelbrot set at different zoom levels
I'm interested in making an animated movie of a zoom in on a part of the Mandelbrot set. My code works well for a few zooms, but upon trying to zoom in quite far, I find that the fractal becomes "...
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votes
1answer
352 views
Python PID simulator controller output [closed]
I have written a piece of code (in Py3) that graphs out the controller value of PID controller. This is so that by changing the various sub controllers (P/I/D) I can visualise how the graph changes. I'...
3
votes
2answers
62 views
Real time graph simulation of dice tossing
When tossing a dice many many time all numbers tend to appear the same number of times, but if the number of throws is small then some numbers may appear more or less often than others, even ...
5
votes
1answer
53 views
Plotting some displays from a weather URL
I've got some code that plots some displays from a weather URL and locations in a CSV file. I'd like to see if anyone can make the code more efficient, the code runs fine without any errors and I'm ...
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0answers
240 views
Barrier Option Pricing using Python
This is my implementation of pricing an exotic option (in this case an up-and-in barrier option) using the Monte Carlo simulation in Python. I use NumPy where I can. Any ideas to optimize this code?
<...
4
votes
1answer
64 views
Trello list scraper with data visualization - Monthly food expenses
For the last couple of months I've been working on a python script that pulls data from a specific Trello list and sums up the numeric values by list (lists are split up into months). I've worked on ...
13
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3answers
308 views
Plotting different parameterized polynoms
For a university assignment I had to plot different polynomial functions depending on one single parameter. That parameter gave the number of supporting points to interpolate a given function in the ...
3
votes
1answer
75 views
Abstract graphing-and-timing functions
I like to use timeit to measure performance of small, and sometimes big, functions. However it can be uncertain as to what the 'actual' time to execute the function ...
4
votes
3answers
378 views
Plotting from a Pandas dataframe
I want to improve my code. Is it possible to get the plot without repeating the same instructions multiple lines?
The data comes from a Pandas' dataframe, but I am only plotting the last column (...
3
votes
0answers
61 views
Read in file, Filter out records, output results
I have been working on a project for some time and have let one Python file grow into a huge file that tries to do everything. The structure is pretty flat and I don't like it. I've used other ...
5
votes
1answer
161 views
Multigeneration evolution simulator, graphing phenotypic change
I created an evolution simulator. It takes random chance and applies it to phenotypes of species. This was very much for fun, and I would love any input on:
Readability of code
Efficiency of ...
2
votes
2answers
4k views
Plot heat map from csv file using numpy and matplotlib
There's a csv file with format:
x0, y0, v00
x0, y1, v01
...
x1, y0 v10
...
And what I want to do is to plot a heat map, in which at location (x, y) the value v ...
3
votes
1answer
115 views
Scoreboard with score evolution plots using classes
I've very recently started using OOP paradigms for the code in my work (academic research). As an exercise I tried coding this quick scoreboard.
I'm not interested in improving the 'display' part, I ...
5
votes
1answer
229 views
Evaluating a series of Legendre polynomials
The following function represents the electrostatic potential, in spherical coordinates, due to a ring of charge \$q=1\$ and radius \$R=1\$, placed in the plane \$x\$-\$y\$:
$$\phi(r,\theta) = \sum_{...
7
votes
2answers
817 views
Histogram of a string
I'm teaching myself Python and when a friend posted this sentence
Only the fool would take trouble to verify that his sentence was
composed of ten a's, three b's, four c's, four d's, forty-six e'...
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votes
2answers
36 views
Run several Python programs and check for errors
For a post-graduate subject that I present, I maintain a repository of examples (on GitHub) from the textbook which is contributed and edited by my students, who are not very Python literate. I have ...
5
votes
1answer
445 views
Matplotlib: Display y value as a marker
I created a plot on which the y value is visible with the marker.
What's your opinion ?
I wonder if I could have done something simpler.
(code should run in a Jupyter notebook)
...
5
votes
1answer
295 views
Web crawler that charts stock ticker data using matplotlib
I've built a web crawler using the BeautifulSoup library that pulls stock ticker data from CSV files on Yahoo finance, and charts the data using ...
14
votes
3answers
1k views
Orbital Trajectory simulator
I have written a simple program to do trajectory simulation in the Earth-Moon system, it still has a long way to go I am working on making it more class oriented and am looking into implementing a ...
5
votes
1answer
808 views
A matplotlib scatter function inside a for loop
This function is working exactly as I want, only, it's taking too long.
For speed ups, I've tried to do as much as I can before the main for loop by declaring ...
5
votes
3answers
197 views
Energy curve plotter
I am not much experienced in Python, just write some small script. All my codes are procedural. They work fine, and I always check them with pep8.
One of them is:
...
4
votes
2answers
81 views
Python object-oriented pipe cooling simulations
Here is my code simulating liquid in a pipe cooling under different conditions. How did I do approaching this in an object orientated way? Is there any way I can improve this code?
...
13
votes
1answer
215 views
Racetrack plotter
My Racetrack is just that. A Racetrack. You can't race it (yet) because I had trouble with collision detection, but I wanted to share it anyway.
It creates a base polygon by using ...
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vote
1answer
302 views
Generic plotting wrapper (around matplotlib)
I am experimenting with making my own re-usable libraries. Therefore, I decided to start with some of the plots that I generally use during development/debugging to check what is actually inside my ...
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votes
1answer
278 views
A big “Game of Life”
Our quest: Create a big simulation for Conway's Game of Life, and record the entire simulation history.
Current Approach: Cython is used for an iterate method. The ...
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votes
2answers
878 views
Python program to check if a set of points is at land or at sea
I have written a program that divides an geographical area up in cells with size 0.002 degrees longitude by 0.001 degrees ...
7
votes
1answer
78 views
Outputting scatter plots
I have written a python function that outputs scatter plots using Matplotlib after processing the data a little. It works but it's painfully slow. I was wondering if anybody had any suggestions as to ...
13
votes
2answers
453 views
Numerics for a game theory calculation using expected utility
I am trying to replicate Bruce B. de Mesquita's (BDM) results on political game theory for prediction. Based on where actors stand on issues, their capabilities, salience, BDM's method attempts to ...
5
votes
1answer
95 views
Charting daily balance
I have been trying my hand at Python lately. I have been able to look at code examples and create a custom application that queries a Microsoft SQL Server, pulls out two columns (date, balance) and ...
3
votes
2answers
90 views
Calculating doubling times from data points
In the code below, noisy data points with unique errors are created. From this, an exponential function is fitted to the data points, and then doubling times (10 unit windows) are calculated.
I'm ...
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votes
0answers
83 views
Covering Array Sorter
A covering array is a N x k array in which each element is a from a set of v symbols, and ...
2
votes
1answer
510 views
Drawing a cloud of points
I decided that it would be nice to write some code to draw a cloud of points.
Of course my first thought was to draw some random points but the result is not cloud-ish, it is well... random.
In the ...
11
votes
1answer
832 views
Modified Taylor diagrams
There is a type of diagram summarizing how well predictions from numerical models fit expectations; one obvious use case is comparing machine-learning regression models. Modified Taylor diagrams are ...
9
votes
2answers
1k views
Predator Prey Simulation
Below is a simple random walk predator prey simulation that is optimized to the best of my abilities. I would love to hear about any improvements that can made.
...
10
votes
1answer
246 views
Visualize Parts of Song as Analyzed by Echonest
This is the a bit of code that works with Echonest API's pyechonest and remix libraries combined with matplotlib.pyplot to offer a simple visual representation of the start and end "parts" of a music ...
