Hi Sanskriti,
As per my understanding, you have a .DAT file and want to plot a 3D contour with it.
You can import the data file using the ‘importata’ function in MATLAB. The coordinates (x,y,z) can be obtained with the help of array indexing as shown in the below code.
% Import the data from the .dat file
data = importdata('your_file_name.dat');
% Extract x, y, and z coordinates from the data
x = data(:, 1);
y = data(:, 2);
z = data(:, 3);
To plot a contour, a grid of ‘x’ and ‘y’ values are required, which can be created using the ‘meshgrid’ function. To plot a 3D contour with (x,y,z) coordinates, the size of grid ‘Z’ should be same as that of ‘X’ and ‘Y’ grids. This can be achieved using the ‘griddata’ function as shown below:
% Create a grid for interpolation
[X, Y] = meshgrid(unique(x), unique(y));
% Interpolate the data to create a grid
Z = griddata(x, y, z, X, Y);
After creating the (X,Y,Z) grids, a 3D contour can be plotted using the ‘contour3’ function by passing the grid values as arguments as shown below.
% Create a 3D contour plot
figure;
contour3(X, Y, Z);
xlabel('X');
ylabel('Y');
zlabel('Z');
title('3D Contour Plot');
For more information on the afore-mentioned functions, refer to the following documentation:
1. For ‘importdata’ function:
2.For ‘meshgrid’ function:
3.For ‘griddata’ function:
4.For ‘contour3’ function:
