Cones Size problem in loops

📊 Plotly Python
1

Hi everyone,

We have spoken about size of cones (Cones Size Problem - #2 by Bijan) But there is a problem when we use many cones in a command (fig.add_cone). For better understanding take a look to the below codes:

import plotly.graph_objects as go
import plotly as plt
import numpy as np
import random as rnd

def rndata():
    a=0
    b=10
    n=1
    rslt=[]
    for i in range(n):
        rslt.extend([rnd.randint(a,b),rnd.randint(a,b),None])
    return rslt

fig = go.Figure()

u,v,w=[],[],[]
xx,yy,zz=[],[],[]


for i in range(10):
    x= rndata()
    y=rndata()
    z=rndata()

    size=((x[1]-x[0])**2+(y[1]-y[0])**2+(z[1]-z[0])**2)**0.5
    axis=[(x[1]-x[0])/size,(y[1]-y[0])/size,(z[1]-z[0])/size]

    fig.add_scatter3d(x=x,y=y,z=z,mode="lines")

    u.extend([axis[0],None])
    v.extend([axis[1],None])
    w.extend([axis[2],None])
    xx.extend([x[1],None])
    yy.extend([y[1],None])
    zz.extend([z[1],None])

sizes=rnd.randint(1,5)
fig = fig.add_cone( opacity=0.5, sizemode='absolute',sizeref=sizes,showscale=False,
                                 colorscale=[cl,cl],
                                 anchor='tip', #['tip', 'tail', 'cm', 'center']
    x=xx, y=yy, z=zz, u=u,  v=v,  w=w,
    text=str(sizes))

fig.update_layout(scene_aspectmode='data',)

fig.show()

When we run above code it doesn’t return correct sizes of cones (check it by running multiple times) but when we run the codes in ( Cones Size Problem - :bar_chart: Plotly Python - Plotly Community Forum) sizes are correct. Is it a bug or there is a solution?

2

The problem has solved according to this GitHub link: Cone Size

Here is a code for sample:

import plotly.graph_objects as go
import random as rnd
import math

fig = go.Figure()

u=[]
v=[]
w=[]
xx=[]
yy=[]
zz=[]

for i in range(20):
    
    u0=1
    v0=rnd.randint(0,2)
    w0=rnd.randint(0,2)
    
    r = math.sqrt(u0*u0+v0*v0+w0*w0)
    u0 /= r
    v0 /= r
    w0 /= r 
    
    u.extend([u0,None])
    v.extend([v0,None])
    w.extend([w0,None])
    xx.extend([rnd.randint(0,50),None])
    yy.extend([rnd.randint(0,50),None])
    zz.extend([rnd.randint(0,50),None])

sizes=5  
fig = fig.add_cone(sizemode='raw',sizeref=sizes, colorscale=['red','red'],
                   x=xx, y=yy, z=zz, u=u, v=v, w=w,)
fig.show()

The result are cones with the same size. Pay attention that ‘raw’ option is not available in older version of Plotly and above code has been written and executed using Plotly version: 5.22.0