Radial Bar Chart (3 seperated bars)

📊 Plotly Python
2

@JayR7 ,
Calling

help(go.layout.Polar.barmode)
   Determines how bars at the same location coordinate are
   displayed on the graph. With "stack", the bars are stacked on
   top of one another With "overlay", the bars are plotted over
   one another, you might need to reduce "opacity" to see multiple
   bars.
   
   The 'barmode' property is an enumeration that may be specified as:
     - One of the following enumeration values:
           ['stack', 'overlay']

we are noticing that it doesn’t display barmode="group", similar to cartesian case.
But I deduced an algorithm to plot grouped polar bars, according to the number of categories/groups and the bar numbers in each group:

import plotly.graph_objects as go
categories=10
nbar_group=5 #number of bars in a group
step = 360/categories
small_step=step/(nbar_group+1)
theta = [0.5*(2*k-1)*step+small_step*(j+1)  for k in range(categories) for j in range(nbar_group)]
r = [12, 10, 7, 5, 2]*categories 
tickvals=[k*step for k in range(categories)]
ticktext=["C", "B", "A", "J", "I", "H", "G", "F", "E", "D"]

fig=go.Figure(go.Barpolar(r=r, theta=theta, marker_color=r, marker_colorscale="Blues",
                           marker_colorbar_thickness=23))
fig.update_layout(width=500, polar=dict(angularaxis=dict(tickvals=tickvals, ticktext=ticktext)))

barpolar-group

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