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Set a diverging color scheme to center on zero in Altair
How to merge two dictionaries in a single expression?Calling an external command in PythonFinding the index of an item given a list containing it in PythonUsing global variables in a functionUnderstanding Python super() with __init__() methodsHow do I sort a dictionary by value?How to make a chain of function decorators?How do I pass a variable by reference?How do I get the number of elements in a list?How do I list all files of a directory?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
How can I go about getting the colour scale to center on zero for a diverging colour scale.
python visualization altair
edited Mar 27 at 14:12
jakevdp
23.5k4 gold badges42 silver badges62 bronze badges
asked Mar 27 at 13:58
EamonnEamonn
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add a comment |
How can I go about getting the colour scale to center on zero for a diverging colour scale.
python visualization altair
edited Mar 27 at 14:12
jakevdp
23.5k4 gold badges42 silver badges62 bronze badges
asked Mar 27 at 13:58
EamonnEamonn
3583 silver badges16 bronze badges
add a comment |
How can I go about getting the colour scale to center on zero for a diverging colour scale.
python visualization altair
edited Mar 27 at 14:12
jakevdp
23.5k4 gold badges42 silver badges62 bronze badges
asked Mar 27 at 13:58
EamonnEamonn
3583 silver badges16 bronze badges
How can I go about getting the colour scale to center on zero for a diverging colour scale.
python visualization altair
python visualization altair
edited Mar 27 at 14:12
jakevdp
23.5k4 gold badges42 silver badges62 bronze badges
asked Mar 27 at 13:58
EamonnEamonn
3583 silver badges16 bronze badges
edited Mar 27 at 14:12
jakevdp
23.5k4 gold badges42 silver badges62 bronze badges
asked Mar 27 at 13:58
EamonnEamonn
3583 silver badges16 bronze badges
edited Mar 27 at 14:12
jakevdp
23.5k4 gold badges42 silver badges62 bronze badges
edited Mar 27 at 14:12
jakevdp
23.5k4 gold badges42 silver badges62 bronze badges
edited Mar 27 at 14:12
jakevdp
23.5k4 gold badges42 silver badges62 bronze badges
23.5k4 gold badges42 silver badges62 bronze badges
asked Mar 27 at 13:58
EamonnEamonn
3583 silver badges16 bronze badges
asked Mar 27 at 13:58
EamonnEamonn
3583 silver badges16 bronze badges
asked Mar 27 at 13:58
EamonnEamonn
3583 silver badges16 bronze badges
3583 silver badges16 bronze badges
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
One way to do this is to explicitly set the domain to be symmetric:
import numpy as np
import pandas as pd
import altair as alt
df = pd.DataFrame(np.random.randn(100, 3), columns=['x', 'y', 'z'])
alt.Chart(df).mark_point().encode(
x='x',
y='y',
color=alt.Color('z', scale=alt.Scale(scheme='blueorange', domain=[-3, 3]))
)
answered Mar 27 at 14:12
jakevdpjakevdp
23.5k4 gold badges42 silver badges62 bronze badges
Ah, perfect! Simple solution. I was hoping there would be a center as in seaborn for example, but this also works, although it's a pain if the values are skewed heavily towards either extreme.
– Eamonn
Mar 27 at 14:14
We do plan to add scale.domainMid to Vega-Lite/Altair, but haven't got the time to do it yet. You can follow the thread here github.com/vega/vega-lite/issues/4542. Contributions are also welcomed. :)
– kanitw
Mar 28 at 5:32
add a comment |
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1 Answer
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One way to do this is to explicitly set the domain to be symmetric:
import numpy as np
import pandas as pd
import altair as alt
df = pd.DataFrame(np.random.randn(100, 3), columns=['x', 'y', 'z'])
alt.Chart(df).mark_point().encode(
x='x',
y='y',
color=alt.Color('z', scale=alt.Scale(scheme='blueorange', domain=[-3, 3]))
)
answered Mar 27 at 14:12
jakevdpjakevdp
23.5k4 gold badges42 silver badges62 bronze badges
Ah, perfect! Simple solution. I was hoping there would be a center as in seaborn for example, but this also works, although it's a pain if the values are skewed heavily towards either extreme.
– Eamonn
Mar 27 at 14:14
We do plan to add scale.domainMid to Vega-Lite/Altair, but haven't got the time to do it yet. You can follow the thread here github.com/vega/vega-lite/issues/4542. Contributions are also welcomed. :)
– kanitw
Mar 28 at 5:32
add a comment |
One way to do this is to explicitly set the domain to be symmetric:
import numpy as np
import pandas as pd
import altair as alt
df = pd.DataFrame(np.random.randn(100, 3), columns=['x', 'y', 'z'])
alt.Chart(df).mark_point().encode(
x='x',
y='y',
color=alt.Color('z', scale=alt.Scale(scheme='blueorange', domain=[-3, 3]))
)
answered Mar 27 at 14:12
jakevdpjakevdp
23.5k4 gold badges42 silver badges62 bronze badges
Ah, perfect! Simple solution. I was hoping there would be a center as in seaborn for example, but this also works, although it's a pain if the values are skewed heavily towards either extreme.
– Eamonn
Mar 27 at 14:14
We do plan to add scale.domainMid to Vega-Lite/Altair, but haven't got the time to do it yet. You can follow the thread here github.com/vega/vega-lite/issues/4542. Contributions are also welcomed. :)
– kanitw
Mar 28 at 5:32
add a comment |
One way to do this is to explicitly set the domain to be symmetric:
import numpy as np
import pandas as pd
import altair as alt
df = pd.DataFrame(np.random.randn(100, 3), columns=['x', 'y', 'z'])
alt.Chart(df).mark_point().encode(
x='x',
y='y',
color=alt.Color('z', scale=alt.Scale(scheme='blueorange', domain=[-3, 3]))
)
answered Mar 27 at 14:12
jakevdpjakevdp
23.5k4 gold badges42 silver badges62 bronze badges
One way to do this is to explicitly set the domain to be symmetric:
import numpy as np
import pandas as pd
import altair as alt
df = pd.DataFrame(np.random.randn(100, 3), columns=['x', 'y', 'z'])
alt.Chart(df).mark_point().encode(
x='x',
y='y',
color=alt.Color('z', scale=alt.Scale(scheme='blueorange', domain=[-3, 3]))
)
answered Mar 27 at 14:12
jakevdpjakevdp
23.5k4 gold badges42 silver badges62 bronze badges
answered Mar 27 at 14:12
jakevdpjakevdp
23.5k4 gold badges42 silver badges62 bronze badges
answered Mar 27 at 14:12
jakevdpjakevdp
23.5k4 gold badges42 silver badges62 bronze badges
answered Mar 27 at 14:12
jakevdpjakevdp
23.5k4 gold badges42 silver badges62 bronze badges
23.5k4 gold badges42 silver badges62 bronze badges
Ah, perfect! Simple solution. I was hoping there would be a center as in seaborn for example, but this also works, although it's a pain if the values are skewed heavily towards either extreme.
– Eamonn
Mar 27 at 14:14
We do plan to add scale.domainMid to Vega-Lite/Altair, but haven't got the time to do it yet. You can follow the thread here github.com/vega/vega-lite/issues/4542. Contributions are also welcomed. :)
– kanitw
Mar 28 at 5:32
add a comment |
Ah, perfect! Simple solution. I was hoping there would be a center as in seaborn for example, but this also works, although it's a pain if the values are skewed heavily towards either extreme.
– Eamonn
Mar 27 at 14:14
We do plan to add scale.domainMid to Vega-Lite/Altair, but haven't got the time to do it yet. You can follow the thread here github.com/vega/vega-lite/issues/4542. Contributions are also welcomed. :)
– kanitw
Mar 28 at 5:32
Ah, perfect! Simple solution. I was hoping there would be a center as in seaborn for example, but this also works, although it's a pain if the values are skewed heavily towards either extreme.
– Eamonn
Mar 27 at 14:14
Ah, perfect! Simple solution. I was hoping there would be a center as in seaborn for example, but this also works, although it's a pain if the values are skewed heavily towards either extreme.
– Eamonn
Mar 27 at 14:14
We do plan to add scale.domainMid to Vega-Lite/Altair, but haven't got the time to do it yet. You can follow the thread here github.com/vega/vega-lite/issues/4542. Contributions are also welcomed. :)
– kanitw
Mar 28 at 5:32
We do plan to add scale.domainMid to Vega-Lite/Altair, but haven't got the time to do it yet. You can follow the thread here github.com/vega/vega-lite/issues/4542. Contributions are also welcomed. :)
– kanitw
Mar 28 at 5:32
add a comment |
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