All Questions
1,226 questions
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22
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How to plot date data from my pandas dataframe [duplicate]
Hey im a beginner struggling to plot a date (x-axis) vs a float (y-axis). Im struggling to understand the matplotlib documentation around dates or find an answer on SO.
I have a pandas dataframe with ...
- 1
9
votes
3
answers
430
views
How to plot polygons from categorical grid points in matplotlib? (phase-diagram generation)
I have a dataframe that contains 1681 evenly distributed 2D grid points. Each data point has its x and y coordinates, a label representing its category (or phase), and a color for that category.
...
- 2,797
0
votes
0
answers
34
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matplotlib/pandas multiple boxplots with an additional subplot
I would like to create 5 boxplots from a pandas dataframe and add an additional plot with a bar chart to create a full 3x2 matrix of plots. However, I am getting an error in several approaches.
Try #1:...
- 137
0
votes
1
answer
55
views
pandas bar chart with paired columns
I have a DataFrame with paired columns. I want to plot it such that each pair of columns has a unique color, and one column of each pair has an empty fill.
I tried this:
import pandas as pd
df = pd....
- 553
2
votes
1
answer
62
views
Unusual Memory Error when plotting line on secondary y axis using Pandas/Matplotlib
I'm getting the following memory error when adding a line to the secondary axis:
MemoryError: Unable to allocate 48.2 GiB for an array with shape (1726364447,) and data type [('val', '<i8'), ('maj',...
- 11.7k
0
votes
1
answer
72
views
fill_between plot fails on specific index value combo for a pands time-series
I try to do a plot and observe a strange error:
import pandas as pd
import matplotlib.pyplot as plt
idx = pd.TimedeltaIndex(['0 days 00:00:00', '0 days 06:00:00', '0 days 12:00:00', '0 days 18:00:00']...
- 314
1
vote
3
answers
66
views
Conditional marker for scatterplot Matplotlib
I am trying to plot x1 and x2 against each other, and if class == 1, then marker should be +, if class == 0, then the marker should just be a dot.
The file.csv is structured like this, the class ...
- 56
0
votes
0
answers
121
views
Matplotlib Assertion Error when plotting in Jupyter Lab Notebook
UPDATE (2024/09/21): I have changed pd.DataFrame.boxplot for pd.DataFrame.plot.box functions and restarted the Jupyter server. Now, it works repeatedly. No issues like before arise.
(I believe there ...
- 1
3
votes
1
answer
70
views
Plotting a timeseries as bar plot with pandas results in an incorrect year
I have the following dataframe (except my actual data is over 25 years):
import pandas as pd
df = pd.DataFrame(
dict(
date=pd.date_range(start="2020-01-01", end="2020-12-31&...
- 1,366
-1
votes
1
answer
91
views
Given a table with a value z and polar coordinates (r, phi), how can I use matplotlib to plot these values on a polar grid?
I have a pandas dataframe with three columns. The first column is value z, and the other two columns are polar coordinates (r and phi, respectively, where phi is assumed degrees). r and phi are whole ...
- 95
0
votes
0
answers
44
views
Matplotlib plotting plt.plot(t,y) VS df.plot(y)
what's the problem, why the these two versions of code do not produce the same graphs ? they are just reversed in order.
My df.index is a date_time object and Y_FIT['BFGS'] is an array.
CODE 1 :
plt....
- 128
0
votes
1
answer
50
views
Plotting multivariable plot in seaborn using Pandas DataFrame
Reproducing the data frame as showed :
dx = {'SEGM':[9, 8, 7, 6, 5, 4, 3, 2, 1, 0],
'YES':[4812, 2697, 2677, 1811, 1570, 1010, 418, 210, 115, 166],
'NO':[590, 1368, 2611, 2968, 3942, 3596, 2141, 1668, ...
- 861
2
votes
1
answer
73
views
How to plot rows containing na's in stacked bar chart python?
I am still an absolute beginner in python and I googled a lot to built code to make a stacked bar chart plot my df. I am using spyder and python 3.12
After some data preparation, I am left with this ...
- 93
0
votes
1
answer
387
views
How to plot multiple data sets imported from excel worksheet in matplotlib?
I need help with plotting the data from excel into matplotlib. The data is taken from one worksheet. The columns have similar structure:column a -x values, column b - y values, column c - x values, d -...
- 11
0
votes
1
answer
57
views
How do i add a subplot to an existing FacetGrid?
i have 10 times measured data i want to plot in a specific way.
The easy part was this:
facetgrid = sns.lmplot(data=file_to_plot, col="count", col_wrap=3, x='measured_data', y='y_data')
plt....
