how to plot an arrow in matlab in matlab

To plot an arrow in Matlab, there are different methods, one of which is to use the annotation function. This allows to easily plot arrows with specific properties, such as the head size and tail position, that can be customized according to the user's needs.

main.m
x = [1 2];
y = [3 6];

annotation('arrow',x,y,'HeadLength',10,'HeadWidth',10)
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This code will plot an arrow starting from (1,3) to (2,6) with a head length and width of 10.

Another way to plot arrows is to use the quiver function, which also allows plotting arrows with specified properties, such as direction and magnitude.

main.m
x = 1:0.2:2;
y = 1:0.2:2;
z = x.*exp(-x.^2-y.^2);

[dx, dy] = gradient(z, 0.2, 0.2);
quiver(x,y,dx,dy)
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This code will plot arrows depicting the direction of the gradient of the function z on a 2D grid.