Hello all,

I tried to draw something like this in bokeh:

→ there is no problem to use “annular_wedge”, but problem is to determine correct position (x, y) and angle for text. I found is almost impossible to align it with the line:

→ this is my result as you can see the text is always in different possition agains cetral point [0,0]

So to make it easier (not need to reproduce all what I have → SQL reads, .json reading …) I prepared one simple example to demonstrate issue:

Result:

→ Issue is that somehow when I use the text with angle (or without I dont know) the also distance from center differs.

→ the most evidence it is on x-axis where texts are at the circle and correclty attached to line, on other hand on y-axis they are a little bit stretch out from central point

→ also noticed that durind Zooming the text changes coordinates agains the rest of objects.

here is complete code I used:

```
from bokeh.plotting import figure, show
from math import pi, sin, cos
def x_coordinace(radius, angle):
x = radius * cos(angle)
return x
def y_coordinace(radius, angle):
y = radius * sin(angle)
return y
def round_percentage(item):
item = round(float(item),2)
item = str(f"{item}%")
return item
plot = figure(
title=None, width=500, height=500, x_range = [-4, 4], y_range = [-4, 4],
min_border=0)
# Main circle
plot.annular_wedge(
x = 0,
y = 0,
inner_radius = 3,
outer_radius = 3.01,
direction = "anticlock",
start_angle = 0,
start_angle_units = "rad", # "deg", "rad", "grad" and "turn".
end_angle = 2 * pi,
end_angle_units = "rad", # "deg", "rad", "grad" and "turn".
line_color = "black",
fill_color = "black")
N = 12
Angle_ratio = 2 * pi / N
Angles_rad = []
Pre_angle = 0
for i in range(N):
New_angle = Pre_angle + Angle_ratio
Angles_rad.append(round(New_angle, 6))
Pre_angle = New_angle
Radius_list = [3.01] * N
anchor = ["top_left"] * N
angle_units = ["rad"] * N
# small steps
Pre_angle = 0
for i in range(N):
New_angle = Pre_angle + Angle_ratio
plot.annular_wedge(
x = 0,
y = 0,
inner_radius = 3.01,
outer_radius = 3.5,
direction = "anticlock",
start_angle = New_angle,
start_angle_units = "rad", # "deg", "rad", "grad" and "turn".
end_angle = New_angle + 0.01,
end_angle_units = "rad", # "deg", "rad", "grad" and "turn".
line_color = "black",
fill_color = "black")
Pre_angle = New_angle
text = list(map(str,Angles_rad))
x = list(map(x_coordinace,Radius_list,Angles_rad))
y = list(map(y_coordinace,Radius_list,Angles_rad))
angle = Angles_rad
plot.text(x=x, y=y, text=text, angle=angle, angle_units = "rad", text_color="#96deb3", anchor = anchor)
show(plot)
```

My Bokeh Version is: 3.1

Python: 3.11.2

Using Windows 10

and displaying result in Microsoft Edge

can you please help?

thank you

Jan