MATLAB: Plot 2d line from matrix data

2dlinematrixplot

Hey,

I have 2d matrix data (100X2) and I want to plot line from it.

For example: each row is one point, (1,1) = X & (1,2) = Y. From all those 100 points I want to draw a line.

10x,

Itay

Best Answer

plot(A(:,1),A(:,2))

Example

A=[1:100;rand(1,100)]'
plot(A(:,1),A(:,2))

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MATLAB: Basic 2D graph from 3D matrix

plot(squeeze(A(1,1,:)))

MATLAB: Plotting multiple 2D line plots from a 3D matrix

In order to use plot() efficiently, you should prepare the data to call it just one time. plot() treats each column of 2D arrays as a separate line. So if you had, for example, a 3x4x5 matrix, you need 12 lines of 5 points. You should first permute the matrix and then reshape it to have all of the data in columns. If M is your dataset, then:

M = rand (3, 4, 5); 
Dim = size (M);
M2 = permute (M, [3,2,1]);
M3 = reshape (M2(:), Dim(3), []);
plot (M3);

Best Answer

Related Solutions

MATLAB: Basic 2D graph from 3D matrix

MATLAB: Plotting multiple 2D line plots from a 3D matrix

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