All Questions
11 questions
0
votes
2
answers
171
views
How to change the color of a single line plot based on another variable
I want to plot a line using the following equation.
y = x(1+0.25ε)
Where,
x = {0, 1, 2, ..., 200}
ε = np.random.randn()
And i want to change the color of the plot based on slop. I.e it should be blue ...
- 388
0
votes
0
answers
106
views
Is there a more elegant way to apply complicated functions to meshgrid?
My goal is to plot the function $f(x,y) = 3^{\min\{x,2\}}t_0 y$
where $t_0$
is the smallest solution of $2t^x-3t-1=0$ (it's just a MWE; I didn't check the existence of the root(s). )
I did it. But in ...
1
vote
2
answers
1k
views
How to detect if there is intersection using matplotlib?
I am using matplotlib to plot these two line graphs. However, only sometimes my graphs would have an intersection. How can I detect if my line graphs have an intersection?
df = pd.read_csv("test....
- 229
1
vote
1
answer
399
views
Plotting epicycles by using matplotlib
Why does the following code not working?
I want to display epicycles by using matplotlib like a following image
import matplotlib.pyplot as plt
import numpy as np
from numpy import *
import math
...
- 147
0
votes
2
answers
6k
views
Python plot 1D array
I would like to plot the difference between each individual point.
I have one series y_test which is one-dimensional and contains continuous values. The index is kinda whacky (7618, 276, 7045, 6095, ...
- 628
1
vote
2
answers
2k
views
Show only certain tick labels in log plot
The code below produces plots like this one:
I need to show only the tick labels in the y axis that are over the horizontal line. In this case, the labels [2,3,4,5] would need to be hidden. I've ...
- 42.6k
0
votes
1
answer
345
views
Projection of data onto principal component yields incorrect result
I'm attempting to project 2D data points onto the top principal component of the data's covariance matrix, but my projected points don't lie on the expected vector. Below is my code and output. I've ...
-1
votes
1
answer
71
views
How do I draw a time series that shows the amount of change in data?
For example, I have data such as:
18:00:00 0
18:00:01 -1
18:00:02 -1
18:00:03 -1
18:00:04 2
18:00:05 -3
18:00:06 1
18:00:07 2
18:00:08 3
18:00:09 4
18:00:10 5
...
- 185
0
votes
2
answers
2k
views
how do i store pcolormesh plot as a numpy array - while preserving data shape?
I seem to have some problems storing a plot created using matplotlib.pcolormesh(). As far i know is pcolormesh convert an input data matrix using a colormap. The colormap outputs a RGB value for each ...
- 775
0
votes
1
answer
2k
views
3D pcolor/pclormesh plot in matplotlib
1. My attempt
2-d numpy array represent some value of an area, showing like this:
http://i8.tietuku.com/90d045a6c2375474.png
And I want to plot the value in the Z-axis.
For example, ...
- 3,852
8
votes
2
answers
32k
views
plotting a 2D matrix in python, code and most useful visualization
I have a very large matrix(10x55678) in "numpy" matrix format. the rows of this matrix correspond to some "topics" and the columns correspond to words(unique words from a text corpus). Each entry i,j ...
- 42.1k