I’m not familiar with R but it seems that you are adding two mesh3d traces to the figure.
What you will have to do is adding scatter plots.
Here a Python example:
import plotly.graph_objs as go
import numpy as np
import pandas as pd
# generate data
xx = np.arange(0, 2*np.pi, 0.4)
yy = np.arange(0, 5, 1)
# generate mesh
x, y = np.meshgrid(xx, yy)
# flatten x and y, create z coordinate
x=x.flatten()
y=y.flatten()
z = np.sin(x)
# create figure (mesh3d trace)
fig = go.Figure(
data=go.Mesh3d(
x=x,
y=y,
z=z,
color='black',
opacity=0.7
),
layout={'width': 800, 'height':800}
)
# create scatter3d traces for the lines
for i in range(-1, 4):
fig.add_trace(
go.Scatter3d(
x=xx,
y=np.ones_like(xx)*(i+1),
z=z,
mode='lines',
line_width=5,
line_color='white'
)
)
# create scatter3d traces for the lines
for i in range(0, 7):
fig.add_trace(
go.Scatter3d(
x=np.ones_like(yy)*i,
y=yy,
z=np.ones(5)*np.sin(i),
mode='lines',
line_width=5,
line_color='red'
)
)
fig.show()
mrep 3D