In this article, we will learn how to change a color bar in Plotly Python.
Different types Color-Scale names for Plotly
| aggrnyl | burg | inferno | plasma | rdpu | ylgnbu | matter | geyser |
| agsunset | burgyl | jet | plotly3 | redor | ylorbr | solar | piyg |
| blackbody | cividis | magenta | pubu | reds | ylorrd | speed | picnic |
| blues | darkmint | magma | pubugn | sunset | algae | tempo | portland |
| bluered | electric | mint | purd | sunsetdark | amp | thermal | puor |
| blugrn | emrld | orrd | purp | teal | deep | turbid | rdgy |
| bluyl | gnbu | oranges | purples | tealgrn | dense | armyrose | rdylbu |
| brwnyl | greens | oryel | purpor | turbo | gray | brbg | rdylgn |
| bugn | greys | peach | rainbow | viridis | haline | earth | spectral |
| bupu | hot | pinkyl | rdbu | ylgn | ice | fall | tealrose |
| temps | tropic | balance | curl | delta | oxy | edge | hsv |
| icefire | phase | twilight | mrybm | mygbm |
Syntax:
We can change the color by using the color scale.
fig = go.Figure(data=go.Scatter(
y=np.random.randn(500),
mode='markers',
marker=dict(
size=8,
# set color equal to a variable
color=np.random.randn(500),
# one of plotly colorscales
colorscale='hot',
# enable color scale
showscale=True
)
))
Example 1:
Python3
# import the modules import plotly.graph_objects as go import numpy as np # create figure # from the data using numpy random method fig = go.Figure(data=go.Scatter( y=np.random.randn(500), mode='markers', marker=dict( size=8, # set color equal to a variable color=np.random.randn(500), # one of plotly colorscales colorscale='hot', # enable color scale showscale=True ) )) # display figure fig.show() |
Output:
Example 2:
Set color to hot_r
Python3
import plotly.graph_objects as go import numpy as np fig = go.Figure(data=go.Line( y = np.random.randn(500), mode='markers', marker=dict( size=8, color=np.random.randn(500), #set color equal to a variable colorscale='hot_r', # one of plotly colorscales showscale=True # enable color scale ) )) fig.show() |
Output:
Example 3:
Set color to turbo_r
Python3
import plotly.graph_objects as go import numpy as np fig = go.Figure(data=go.Scatter( y=np.random.randn(500), mode='markers', marker=dict( size=8, # set color equal to a variable color=np.random.randn(550), # one of plotly colorscales colorscale='turbo_r', # enable color scale showscale=True ) )) # display fig.show() |
Output:
