# Plotting 3D for three independent variables without any function

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Yaser Khojah on 21 Mar 2019
Commented: M Naeem on 24 Jul 2021
I have four vectors as attached in Data_1.tx. file. I'm looking for a way to plot their surface map. Where X = (:,column3), Y = (:,column 2) and Z = (:,Column 1). I have looked into meshgrid but did not work since I do not have a function to estimate Z from given X and Y Values. They are only data. I have found and tried this below code but did not like the graph.
trisurf(delaunay(X,Y),X,Y,Z)
I have tried Scatter 3 as below and I do not like it. Is there anyway to present them as the below colourful box? Thank you for your help.
Amanullah Khan on 19 Oct 2020
Thank you so much Mr Walter. It worked for me.

Walter Roberson on 21 Mar 2019
Edited: Walter Roberson on 21 Mar 2019
For a typical surface map, you would use
interpolated_z = griddata(X, Y, Z, query_x, query_y);
surf(query_x, query_y, interpolated_z, 'edgecolor', 'none')
However, the example diagram you give is an example of using https://www.mathworks.com/help/matlab/ref/slice.html on a 3D grid of data. You do not have the information necessary for that -- not unless the unused 4th column of your input is value information.
When I look at your data, it looks to me to be more likely that your first column is value information and that your remaining three columns are X, Y, Z coordinates, rather than your first column being Z coordinates.
Walter Roberson on 21 Mar 2019
Yes, V is represented as color.
You can also create a diagonal set of query points, and hold on and slice() with it. When I looked at the data I could not see any particular angle that it would make sense to slice at.

M Naeem on 23 Jul 2021
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M Naeem on 24 Jul 2021
Thank you soo much ...