All Questions
5,996 questions
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What's causing this weird jump in these phase graphs of Fourier coefficients?
from an assignment in signal processing in Python.
It's all done in Python (through Google Colab) with the libraries cmath, numpy, and matplotlib alone.
Signal a is a window signal, and I calculate ...
- 164
3
votes
1
answer
75
views
Why is the bounding box not aligned to the square?
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.patches import Rectangle
def generate_square_image(size, square_size, noise_level=0.0):
"""
Generates an ...
- 325
0
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0
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57
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how put differents color in the graph in the backgound with matplotlib
enter image heat transferthere is my code but I would like to change just the blue color in the background, put one or two colors in the background
it's the heat transfert between beam, earth in the ...
0
votes
2
answers
125
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fitting theory with experimental data
I want to do fitting on experimental data and my theory I want to try to find the parameters that fit the same as the theory and experiment
do I have to make an algorithm? what algorithm do I use to ...
- 39
0
votes
1
answer
74
views
Problems when using np.arctan2 to plot domain colored complex function
I'm a physics student. I'm trying to write a program to visualize complex functions in different ways using Python with matplotlib and numpy. I've written a class whose object takes as input, among ...
- 255
3
votes
1
answer
78
views
matplotlib waterfall plot with surfaces shows black artifacts on border of plot
I have a script to write a heatmap (or contour map) inside an arbitrary closed shape. A bounding box of grid points is created and a mask is used to clip any points outside of the shape. However, if I ...
1
vote
1
answer
63
views
Log plot point/ticks not showing in the pyplot [duplicate]
I want to create a log plot
However, the result does not show the minor grid and something like this
enter image description here
What can I do with the script. Thank you!
import matplotlib.pyplot as ...
0
votes
1
answer
73
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Tangent points to a rotated ellipse from outer point
C = known outer point, Expected result A(x,y), B(x1,y1)
I guess the answer could be hidden inside first answer here, which calculates tangents slopes & intercepts. Modified a bit I assume.
...
- 115
1
vote
2
answers
124
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How can I produce a delta plot between two RGB image with the same pixel size? [closed]
I have two RGB images of representing plot of a scalar variable on some geometry. My goal is to find a way to plot the difference of that variable btween the two images and color it with a custom ...
- 19
0
votes
1
answer
39
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Matplotlib polygons: Polygons are skewed after rotation
I am trying to draw an object defined by several vertices and then rotate it by defining a face and a vector that I want that face to be normal to. It works fine if I choose a vector that is parallel ...
- 117
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0
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55
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Failing to clip image to rotated polygon in matplotlib
On my project I want to clip pv_module image into rotated rectangle polygons using matplotlib.
My problem is that on many of the rotation azimuths the image is not clipped well,
so the image fit only ...
- 45
1
vote
2
answers
131
views
How to plot a Probability Density Function in Python?
I want to plot a Probability Density Function for the offsets from a log file.
Here is the code:
timestamps = []
sequences = []
log_Name = 'test_rtt_25-01-17_13-07-41_values5_rate50.log'
log_Path = &...
- 17
1
vote
1
answer
76
views
Alternatives to Power Spectral Density for Response of an Oscillator
Background:
Antiresonance is the phenomenon when the amplitude of a system (say an oscillator) shows a significant dip. Here is an article in Wikipedia discussing the same in a coupled system. The ...
- 55
1
vote
1
answer
72
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Why Cannot Matplotlib Library Produce Me a Normal Graph? I Keep Getting a Disfigured Image
I am using PyCharm 2023.2.3 and Python 3.12. The following code
import matplotlib.pyplot as plt
import numpy as np
xs = np.array([100, 500])
ys = np.array([300, 800])
plt.plot(xs, ys)
plt.show(...
4
votes
2
answers
147
views
Numerically obtaining response of a damped driven oscillator gives peak at wrong frequency
I am trying to plot the response of a periodically-driven damped oscillator whose dynamics is governed by,
x''+ 2Gx' + f0^2 x = F cos(ft)
where the constants denote the following.
G: Damping ...
- 55