How to plot contur in 3 D

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Skydriver
Skydriver 2020-3-31
评论： Skydriver 2020-4-4
I have a result calculation and I want to make plot contur in 3 D. From the excel files attxhed I also plot in two dimension of FzWz vs Depth
What is the appropriate Matlab function to create contur in 3 D of FzWz vs Depth
I attach the data file about the data.
Thank you for your kind attention
  2 个评论
Akira Agata
Akira Agata 2020-3-31
I believe contour3 can do that task.
But, looking at you data, there are several sheets in Excel file, and each sheet contains ~20 data.
I don't think 20 data points is sufficient to make contour plot. Do you want to concatenate all the data ( = 20 x number of sheet) before making a contour?
Skydriver
Skydriver 2020-3-31
编辑：Skydriver 2020-3-31
Yes, but I don't know how to generate this countur, because I only have two values depth and FzWz. In generating 3d I saw I need X, Y and Z. Can you show me how to do that plotting?
I also have the coordinate / geographical position but I am not sure it will help
Thank you

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回答（1 个）

Akira Agata
Akira Agata 2020-3-31
OK. Then, how about the following?
% Read all the data in the Excel file
T = table();
for kk = 1:8
Ttmp = readtable('Contour.xlsx','Range','A:D','Sheet',kk);
T = [T; Ttmp];%#ok
end
% Interpolate the data
% **Note: Since there is duplicated data point, griddata returns Warning**
[xGrid, yGrid] = meshgrid(...
linspace(min(T.Fz),max(T.Fz),20),...
linspace(min(T.wz),max(T.wz),20));
zGrid = griddata(T.Fz,T.wz,T.Depth,xGrid,yGrid);
% Show the result
figure
contour3(xGrid,yGrid,zGrid)
hold on
scatter3(T.Fz,T.wz,T.Depth)
xlabel('Fz','FontSize',14)
ylabel('wz','FontSize',14)
zlabel('Depth','FontSize',14)
colorbar
ax = gca;
ax.View = [-80 40];
  5 个评论
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Akira Agata
Akira Agata 2020-4-3
Hi Akhmad-san,
Sorry, it's still not clear for me.
> I want to plot between Fz*Wz against Depth
That must be 2D plot. But the original question is "how to plot contour in 3D".
Also, the listing coordinat you provided in the previous comment is not sufficient to plot contour in 3D.
Could you explain more details on what parameters should be x,y and z, and how the desiered plot looks like.
Skydriver
Skydriver 2020-4-4
My understanding x is FzWz, y is distance between 50 - 51, 51 - 52 etc. and z is Depth.

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