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How to add specified text to coordinates of points in "contour"?

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Hi there,
I need to represent the specified points which I name as P1,P2...P25 for the coordinates of contour plot.
The attached figure further demostrates the requirement.
Can anyone help me to solve this issue?
Thank you.

Respuesta aceptada

Mehmed Saad
Mehmed Saad el 8 de Mzo. de 2021
Here is a sample code
I hate putting comments in code so try to understand it.
[X,Y,Z] = peaks;
contour(X,Y,Z,20)
hold on
xl = xlim;yl = ylim;
no_of_points_x = 5;
no_of_points_y = 5;
locX = reshape(repmat(linspace(xl(1),xl(2),no_of_points_x),no_of_points_y,1).',no_of_points_x*no_of_points_y,[]);
locY = reshape(repmat(linspace(yl(1),yl(2),no_of_points_y),no_of_points_x,1),no_of_points_x*no_of_points_y,[]);
plot(locX,locY,'.','MarkerSize',80,'MarkerFaceColor',[0 0.4470 0.4470])
text(locX,locY,strcat('P',string(1:no_of_points_x*no_of_points_y)),'HorizontalAlignment','center','Color','y')
set(gca,'YDir','reverse')

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