Hi, I have a 3D domain with data and trying to visualize slices of data in 3D space. I can show the data by colours, but not by contours, What Im doing wrong? import plotly.graph_objects as go import numpy as np d = [[-10,10,32], [-15,15,48], [-10,10,32]] x_values = np.linspace(d[0][0], d[0][1],…

Hi @luxs , is srf variable is suppose to be sp_z ? I haven’t explore much about 3D plot, but your contours don’t show up maybe affected by z values that have same values.

Hi is srf variable is suppose to be sp_z ? Yes, you are right, this is just a typo. I’ve fixed it in the original post, but this does not change anything. The isolines are not plotted. It looks like I have some problems with contours syntaxis, but can;t work out which one.

Hi @luxs , welcome to the forums. It seems that you are interested in the contours only. If this is the case, you can use go.Contour(). [image] Contour Over 14 examples of Contour Plots including changing color, size, log axes, and more in Python. An example…

You are actually right. In order to make the contours work in a surface plot, the surface can’t be a plane parallel to the xy-plane: import plotly.graph_objects as go import numpy as np x= np.linspace(0, 50, 2) y= np.linspace(0, 50, 2) z= 10 * np.array([[0,0],[0,0]]) data = go.Surface( x=…

Hi, This is a lovely picture and I would like to make the same, but this should be done on the plane within 3D coordinates because this contour plane is a part of a more complicated 3D image.

If you are interested in just the function BB defined in the original post, then this code defines a slice and the lines, in each slice: import numpy as np import plotly.graph_objs as go def get_the_slice(x,y,z, surfacecolor, colorscale="Hot", showscale=False): return go.Surface(x=x,# https:/…

Hi empet, The picture looks great! But it looks like you do not plot real isolines or contours according to BB values in the 3D domain, but the rater just draws the circles. If it is the only option available, it is ok, it is not a problem for me to calculate traces for isolines. I’ve seen this n…

Just to understand, you want to add the contour (lines) as trace in the existing 3d figure at a discrete z coordinate, right?

Hi AIMPED, I would like to make a contour plot, preferably independent from colours, on the 3D plane. Why independent? Because for making a nice picture, it is good to use a range of colours, but for clarity, it is enough to have only a few isolines, so the step for isolines should be created inde…

How to do 3D Plot surface with isolinies

📊 Plotly Python

AIMPED October 12, 2023, 7:21pm 17

I think this is the thing. Plotly does this calculation in JS and it’s not accesible from the python side. Either you search for the corresponding functions in the plotly source code on github or you might get some inspiration from this post:

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How to do 3D Plot surface with isolinies

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