I want to plot A (6,6) matrix with row number as x axis, column number as y axis and the value of A(x,y) as z axis. what is the function to use?
MATLAB: Plot a 6×6 matrix in 3D
3d plotsmatrices
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There's some punctuation issues making it difficult to understand the description of your data. Here's what I understand:
- X-values are contained in the matrix with dimensions [41x1]
- Y-values are contained in the matrix with dimensions [1x88]
- Z-values are contained in the matris with dimensions [41x88]
Still unsure how the multiple files factors in. However, yes, if you have those matrices as I described, you can plot in 3D. Now it just depends on what type of plot you want to create. Did you want a line plot? Scatter plot? Mesh? Surface? Plots are handled differently than surfaces. Meshes/surfaces are perfect for your data. With plots, you have to use meshgrid first. Just note that y values to meshgrid are rows of a matrix. Think of if you placed a 2D matrix directly on an X-Y axes.
Here's an example
x = linspace(0,2*pi,41)'; % 41x1
y = linspace(0,pi,88); % 1x88
z = sin(x).^2 * cos(y).^2; % 41x88
figuresurf(x,y,z')xlabel('X')ylabel('Y')zlabel('Z')figure[Y,X] = meshgrid(y,x); % Make X and Y 41x88 as well
scatter3(X(:),Y(:),z(:)) % Use linear indexing to turn X, Y, and z into vectors.
xlabel('X')ylabel('Y')zlabel('Z')Surface:
Scatter:
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