All Questions
151
questions
3
votes
1
answer
56
views
Altair Barchart is blank, matplotlib equivalent shows correct visualization
I have been using altair for a time and this is the first time that I have experienced this issue, I have this simple code:
import pandas as pd
import altair as alt
# extract data into a nested list
...
- 175
0
votes
0
answers
36
views
Wrong rectangle width in altair chart for pandas dataframe
I have pandas dataframe which stores currency rate for given day.
print(df[['Date', 'Currency', 'Rate']].head())
Date Currency Rate
18 2023-12-01 AUD 1.64655
19 2023-12-01 BRL ...
1
vote
1
answer
45
views
Altair: add a line in a grouped bar chart
I have this data that I want to plot. In column 'IPVA' there are [0, 1, 2] as possible values, where 1 and 0 are the data that I want to plot as a grouped bar chart, and the 2 is data that I want to ...
- 43
1
vote
0
answers
44
views
Display only the first value of the dropdown menu. on Altair Chart
I would like my chart to show only the first value of the dropdown menu (the red dots representing "USA" in my case), instead of displaying all of the countries prior to any filtering. I ...
- 11
0
votes
1
answer
33
views
Reorder a stacked barplot in altair
So I am making an interactive plot (which is why I'm using altair) and I want to reorder the stacks within each bar to match the legend. I've tried reodering the df, I've tried using the 'sort' ...
- 425
1
vote
1
answer
33
views
Altair choropleth map doesn't display
I'm trying to create a choropleth from some Kaggle data: https://www.kaggle.com/datasets/jessemostipak/hotel-booking-demand but something isn't working.
import pandas as pd
import altair as alt
from ...
- 13
1
vote
0
answers
39
views
chart objects not showing on the chart using selection containing fields with converted columns from datetime data
I am using Altair to create visualisations based on a local csv file about WW1 bombing incidents.nI tried to make 2 charts: one shows all incidents in the same month, one shows all incidents in the ...
- 11
1
vote
2
answers
93
views
Setting order of categorical columns in Altair histogram
Trying to swap order of columns in histogram.
data = {'Age group': {0: '0 - 4', 1: '12 - 16', 2: '5 - 11', 3: 'not specified'},
'Count': {0: 81.0, 1: 86.0, 2: 175.0, 3: 0.0}}
dp = pd.DataFrame(data)
...
- 7,580
-1
votes
1
answer
53
views
How to use indexed data frames with altair?
Lets say I have an indexed pandas DataFrame indexed_df:
df = pd.DataFrame(
[
{'id_foo': 1, 'energy_carrier': 'oil', '2000': 5, '2020': 10},
{'id_foo': 2, 'energy_carrier': '...
- 11.6k
1
vote
1
answer
66
views
How to create stacked bar chart from different data format with altair in python?
What y-expression should I specify in the following example to create a stacked bar chart? Is there some expression like
y="$all-other-columns"
or
y="$group-of-columns"
Or would ...
- 11.6k
1
vote
0
answers
48
views
Separate axis labels on two axis in altair
I am trying to use this code as an example to separate the axis labels for the y axis on the left and on the right side together.
import altair as alt
import pandas as pd
df = pd.DataFrame(
{
...
- 2,282
0
votes
1
answer
44
views
Choropleth doesn't display in Altair
I'm trying to create a choropleth from some data but something isn't working.
import altair as alt
import pandas as pd
from vega_datasets import data
dat = {
'country': [
'France', '...
- 7,580
0
votes
2
answers
109
views
Altair: Apply condition to axis label color based on label membership in a list
I have a scheduling plot where the Y axis is categorical (each Y-entry corresponds to a piece of equipment and the x axis displays time).
I have a list of equipment that contains scheduling clashes.
...
- 191
-1
votes
1
answer
79
views
Altair combining multiple data sets ( one my uploaded, another Altair)
im started to enjoy Altair plotting and i found their One Dot Per Zip map and i kinda have an interest to combine Altair long/lat/zips with my own pandas dataframe containing zips but i dont know how.
...
- 29
1
vote
0
answers
68
views
Layout of plot in Altair is not appearing to show conditional colours in time series plot
I've got some data on admissions in long format about obesity-related hospital admissions - you can see the full dataset here: https://www.dropbox.com/scl/fi/6hu7g556pzcyfkhhp1s5l/sorted_data.csv?...
- 7,580