Questions on the matplotlib mlab API: MATLAB-compatible functions
Questions tagged [matplotlib.mlab]
15 questions
7
votes
2 answers
3D Waterfall Plot with Colored Heights
I'm trying to visualise a dataset in 3D which consists of a time series (along y) of x-z data, using Python and Matplotlib.
I'd like to create a plot like the one below (which was made in Python:…
IanRoberts
- 2,846
- 5
- 26
- 33
4
votes
1 answer
An equivalent function to matplotlib.mlab.bivariate_normal
As of Matplotlib 3.1, mlab.bivariate_normal is removed from matplotlib's library. I was wondering if there is a built-in class that does the same job elsewhere (or in matplotlib)? I searched for a bit but can't find it readily.
I realize that one…
user7864386
3
votes
0 answers
Matplotlib 3D: axis bounds always too large (doesn't set lims correctly)
I have an issue (bug?) with 3D plotting in matplotlib that I wonder if anyone may be able to help with please?
As can be seen by the matplotlib gallery example plots (e.g. from: https://matplotlib.org/examples/mplot3d/surface3d_demo.html), when the…
IanRoberts
- 2,846
- 5
- 26
- 33
2
votes
0 answers
Why the outputs of spectrogram between python and MATLAB are greatly different?
I am trying to translate a MATLAB script into a python script. However, I got completely different outputs from the MATLAB spectrogram and the matplotlib.mlab.specgram(). I checked other questions, however, they didn't help my problem. Could you…
Kei
- 21
- 2
2
votes
0 answers
Matplotlib.mlab Objects cannot be broadcast to a single shape
My code:
(x, y, t) = mlab.psd(
d,
Fs=1.0 / h['xdelta'],
NFFT=512)
psd = 20 * np.log10(y)
plt.plot(x, y, t)
plt.show()
I just get a the following error upon execution:
ValueError: shape mismatch: objects cannot be broadcast to a single…
Orange
- 43
- 13
1
vote
1 answer
How to make class for onclick(event) functions for Interactive plot in matplotlib?
I have tried to create an interactive matplotlib plot using some functions. I want to group the functions into one class (I am still new to this, took help from someone else's code)
import matplotlib.pyplot as plt
def draw_line(startx,starty):
…
Shyam Bahmani
- 11
- 1
1
vote
1 answer
Not able to draw a bounding box with "Width" attribute on the matplotlib's plot?
I am trying to draw a bounding box across text such as :
from matplotlib.pyplot import text
from matplotlib.patches import FancyBboxPatch
import matplotlib.transforms as mtransforms
import numpy as np
import matplotlib.pyplot as plt
def…
Anu
- 3,198
- 5
- 28
- 49
1
vote
0 answers
How to use own CSV file in matplotlib
I am facing the problem with loading CSV data into matplotlib.
This is how my code looks like this:
import numpy as np
import matplotlib.cm as cm
import matplotlib.mlab as mlab
import matplotlib.pyplot as plt
import pandas as pd
csv_filename =…
Roman Šimr
- 81
- 1
- 10
1
vote
1 answer
How to converting string dates(YYYY-MM-DD) from SQL database to matplotlib dates in python?
I wanna plot a graph for data present in the database of temperature and dates.
the data dates is of string type. I tried to convert the string type into matplot date using date2num() function. But, while at the time of plotting graphs I observed…
Sri Harsha
- 123
- 2
- 2
- 12
0
votes
0 answers
How can I plot a matplotlib.mlab spectrogram while keeping the frequency and time values?
I'm trying to plot a colour map and I need to use mlab.specgram() to perform a cross-correlation of two functions in the frequency domain, so I can't use pyplot.specgram(). I used pyplot.imshow in order to plot a colour map of the cross-correlation,…
Petra
- 195
- 1
- 1
- 10
0
votes
1 answer
What to use instead of csv2rec
According to the documentation matplotlib.mlab.csv2rec is deprecated, but the message doesn't indicate what we should move to instead. This is an extremely useful function that keeps my scripts short, I don't want to go rewrite all of this by hand.…
Elliott Slaughter
- 1,455
- 19
- 27
0
votes
1 answer
Superimpose two Voronoi plots in Python
I'd like to superimpose two Voronoi plots in Python, but when I plot the two it just gives me two different plots ( I want both diagrams on the same plot).
Here's my code :
import numpy as np
import scipy.spatial as sp
import matplotlib.pyplot as…
Ilham Harmach
- 1
- 1
0
votes
1 answer
Differences between mlab PCA and sklearn PCA
I have a certain set of "2-dimensional" data which I have to study using a PCA decomposition.
As a first step I tried using the matplotlib.mlab library:
import numpy as np
from matplotlib.mlab import PCA
data = np.loadtxt("Data.txt")
result =…
dade
- 1
- 1
0
votes
1 answer
python pyplot negative contour lines not displayed
minr=min(r_s)
maxr=max(r_s)
mini=min(i_s)
maxi=max(i_s)
xi=np.arange(minr,maxr, 0.1)
yi=np.arange(mini,maxi, 0.1)
zi=mlab.griddata(r_s, i_s, r_z, xi, yi, interp='linear')
plt.rcParams['contour.negative_linestyle'] =…
Kam
- 3
- 2
0
votes
0 answers
Memory Usage python matplotlib.mlab.griddata
Using the griddata-function of matplotlib.mlab I'm facing some problems with memory usage. The function is called several times by the scipy.integrate.quad-function. The task manager tells me that python allocates up to ~1,8 GB memory before it…
Frettchen
- 11
- 3