Diverging Stacked Bar Chart#
This example shows a diverging stacked bar chart for sentiments towards a set of eight questions, displayed as percentages with neutral responses straddling the 0% mark.
import altair as alt
source = alt.pd.DataFrame([
{
"question": "Question 1",
"type": "Strongly disagree",
"value": 24,
"percentage": 0.7,
"percentage_start": -19.1,
"percentage_end": -18.4
},
{
"question": "Question 1",
"type": "Disagree",
"value": 294,
"percentage": 9.1,
"percentage_start": -18.4,
"percentage_end": -9.2
},
{
"question": "Question 1",
"type": "Neither agree nor disagree",
"value": 594,
"percentage": 18.5,
"percentage_start": -9.2,
"percentage_end": 9.2
},
{
"question": "Question 1",
"type": "Agree",
"value": 1927,
"percentage": 59.9,
"percentage_start": 9.2,
"percentage_end": 69.2
},
{
"question": "Question 1",
"type": "Strongly agree",
"value": 376,
"percentage": 11.7,
"percentage_start": 69.2,
"percentage_end": 80.9
},
{
"question": "Question 2",
"type": "Strongly disagree",
"value": 2,
"percentage": 18.2,
"percentage_start": -36.4,
"percentage_end": -18.2
},
{
"question": "Question 2",
"type": "Disagree",
"value": 2,
"percentage": 18.2,
"percentage_start": -18.2,
"percentage_end": 0
},
{
"question": "Question 2",
"type": "Neither agree nor disagree",
"value": 0,
"percentage": 0,
"percentage_start": 0,
"percentage_end": 0
},
{
"question": "Question 2",
"type": "Agree",
"value": 7,
"percentage": 63.6,
"percentage_start": 0,
"percentage_end": 63.6
},
{
"question": "Question 2",
"type": "Strongly agree",
"value": 11,
"percentage": 0,
"percentage_start": 63.6,
"percentage_end": 63.6
},
{
"question": "Question 3",
"type": "Strongly disagree",
"value": 2,
"percentage": 20,
"percentage_start": -30,
"percentage_end": -10
},
{
"question": "Question 3",
"type": "Disagree",
"value": 0,
"percentage": 0,
"percentage_start": -10,
"percentage_end": -10
},
{
"question": "Question 3",
"type": "Neither agree nor disagree",
"value": 2,
"percentage": 20,
"percentage_start": -10,
"percentage_end": 10
},
{
"question": "Question 3",
"type": "Agree",
"value": 4,
"percentage": 40,
"percentage_start": 10,
"percentage_end": 50
},
{
"question": "Question 3",
"type": "Strongly agree",
"value": 2,
"percentage": 20,
"percentage_start": 50,
"percentage_end": 70
},
{
"question": "Question 4",
"type": "Strongly disagree",
"value": 0,
"percentage": 0,
"percentage_start": -15.6,
"percentage_end": -15.6
},
{
"question": "Question 4",
"type": "Disagree",
"value": 2,
"percentage": 12.5,
"percentage_start": -15.6,
"percentage_end": -3.1
},
{
"question": "Question 4",
"type": "Neither agree nor disagree",
"value": 1,
"percentage": 6.3,
"percentage_start": -3.1,
"percentage_end": 3.1
},
{
"question": "Question 4",
"type": "Agree",
"value": 7,
"percentage": 43.8,
"percentage_start": 3.1,
"percentage_end": 46.9
},
{
"question": "Question 4",
"type": "Strongly agree",
"value": 6,
"percentage": 37.5,
"percentage_start": 46.9,
"percentage_end": 84.4
},
{
"question": "Question 5",
"type": "Strongly disagree",
"value": 0,
"percentage": 0,
"percentage_start": -10.4,
"percentage_end": -10.4
},
{
"question": "Question 5",
"type": "Disagree",
"value": 1,
"percentage": 4.2,
"percentage_start": -10.4,
"percentage_end": -6.3
},
{
"question": "Question 5",
"type": "Neither agree nor disagree",
"value": 3,
"percentage": 12.5,
"percentage_start": -6.3,
"percentage_end": 6.3
},
{
"question": "Question 5",
"type": "Agree",
"value": 16,
"percentage": 66.7,
"percentage_start": 6.3,
"percentage_end": 72.9
},
{
"question": "Question 5",
"type": "Strongly agree",
"value": 4,
"percentage": 16.7,
"percentage_start": 72.9,
"percentage_end": 89.6
},
{
"question": "Question 6",
"type": "Strongly disagree",
"value": 1,
"percentage": 6.3,
"percentage_start": -18.8,
"percentage_end": -12.5
},
{
"question": "Question 6",
"type": "Disagree",
"value": 1,
"percentage": 6.3,
"percentage_start": -12.5,
"percentage_end": -6.3
},
{
"question": "Question 6",
"type": "Neither agree nor disagree",
"value": 2,
"percentage": 12.5,
"percentage_start": -6.3,
"percentage_end": 6.3
},
{
"question": "Question 6",
"type": "Agree",
"value": 9,
"percentage": 56.3,
"percentage_start": 6.3,
"percentage_end": 62.5
},
{
"question": "Question 6",
"type": "Strongly agree",
"value": 3,
"percentage": 18.8,
"percentage_start": 62.5,
"percentage_end": 81.3
},
{
"question": "Question 7",
"type": "Strongly disagree",
"value": 0,
"percentage": 0,
"percentage_start": -10,
"percentage_end": -10
},
{
"question": "Question 7",
"type": "Disagree",
"value": 0,
"percentage": 0,
"percentage_start": -10,
"percentage_end": -10
},
{
"question": "Question 7",
"type": "Neither agree nor disagree",
"value": 1,
"percentage": 20,
"percentage_start": -10,
"percentage_end": 10
},
{
"question": "Question 7",
"type": "Agree",
"value": 4,
"percentage": 80,
"percentage_start": 10,
"percentage_end": 90
},
{
"question": "Question 7",
"type": "Strongly agree",
"value": 0,
"percentage": 0,
"percentage_start": 90,
"percentage_end": 90
},
{
"question": "Question 8",
"type": "Strongly disagree",
"value": 0,
"percentage": 0,
"percentage_start": 0,
"percentage_end": 0
},
{
"question": "Question 8",
"type": "Disagree",
"value": 0,
"percentage": 0,
"percentage_start": 0,
"percentage_end": 0
},
{
"question": "Question 8",
"type": "Neither agree nor disagree",
"value": 0,
"percentage": 0,
"percentage_start": 0,
"percentage_end": 0
},
{
"question": "Question 8",
"type": "Agree",
"value": 0,
"percentage": 0,
"percentage_start": 0,
"percentage_end": 0
},
{
"question": "Question 8",
"type": "Strongly agree",
"value": 2,
"percentage": 100,
"percentage_start": 0,
"percentage_end": 100
}
])
color_scale = alt.Scale(
domain=[
"Strongly disagree",
"Disagree",
"Neither agree nor disagree",
"Agree",
"Strongly agree"
],
range=["#c30d24", "#f3a583", "#cccccc", "#94c6da", "#1770ab"]
)
y_axis = alt.Axis(
title='Question',
offset=5,
ticks=False,
minExtent=60,
domain=False
)
alt.Chart(source).mark_bar().encode(
x='percentage_start:Q',
x2='percentage_end:Q',
y=alt.Y('question:N', axis=y_axis),
color=alt.Color(
'type:N',
legend=alt.Legend( title='Response'),
scale=color_scale,
)
)