How to get the coordinates of two points?

centroidColumn = int32(measurements.Centroid(1));
centroidRow = int32(measurements.Centroid(2)); 

 middleColumn = binaryImage(:, centroidColumn);
topRowY = find(middleColumn, 1, 'first'); 
bottomRowY = find(middleColumn, 1, 'last'); 
middleRow = binaryImage(centroidRow, :);
 leftColumnX = find(middleRow, 1, 'first'); 
rightColumnX= find(middleRow, 1, 'last'); 
imshow(Y);hold(imgca,'on');plot(centroidColumn, centroidRow,'m*','MarkerSize', 6, 'LineWidth', 3);
          plot(centroidColumn, topRowY,'r*','MarkerSize', 6, 'LineWidth', 3);

By doing this I am able to mark two points. How can I get coordinates of these two points?

Answer 1

[Guillaume]

I'm a bit confused by your question. You pass the coordinates of the points to plot, so you already know these coordinates:

1st point (magenta): (centroidColumn, centroidRow)

2nd point (red): (centroidColumn, topRowY)

---

Note: you should be using round instead of int32 to round numbers.

[Zara Khan]

is this possible to divide the entire region between these two points into 2,3,4.....10 equal parts ? I want horizontal division ? It like drawing a line between these two points then dividing the line.

[Guillaume]

Of course it's possible:

Ypoints = linspace(toRowY, centroidRow, 11);  %divide the Y coordinates into 10 zones (== 11 boundaries)

[Zara Khan]

how can draw circles through these points?