How to plot a 3d graph with z axis, not the same length as x,y from, the data is imported from an excel sheet ?

I have data from an experiment as attached, how can I import the data from the excel sheet and then build a surface 3-d graph?

Answer 1

[Dyuman Joshi]

out=readmatrix('Test1.xlsx')

out = 20×15

NaN 0 1 2 3 4 5 6 7 8 9 10 11 12 13 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 1 13 12 11 10 9 8 7 6 5 4 3 2 1 0 2 0 1 2 3 4 5 6 7 8 9 10 11 12 13 3 13 12 11 10 9 8 7 6 5 4 3 2 1 0 4 0 1 2 3 4 5 6 7 8 9 10 11 12 13 5 13 12 11 10 9 8 7 6 5 4 3 2 1 0 6 0 1 2 3 4 5 6 7 8 9 10 11 12 13 7 13 12 11 10 9 8 7 6 5 4 3 2 1 0 8 0 1 2 3 4 5 6 7 8 9 10 11 12 13

%Extracting x, y and z data
x = out(1,2:end);
y = out(3:end,1);
Z = out(3:end,2:end);

%Create a mesh
[X,Y]=meshgrid(x,y);
%Draw a surface graph
surf(X,Y,Z)

%You can also extract data via readmatrix() and the range of data from excel
x0 = readmatrix('Test1.xlsx','Range','C2:P2')

x0 = 1×14

0 1 2 3 4 5 6 7 8 9 10 11 12 13

%similarly y0 = readmatrix('Test1.xlsx','Range','C4:C21')
%z0 = readmatrix('Test1.xlsx','Range','C4:P21')