我的工作代码：
function [ ] = defect_marking( )
% This function divides a figure into grids. The grid cells can be clicked
% ,on detecting the click the cell would turn to red. Use keypress to exit
% the funtion
disp('Defect Function');
pw = waitforbuttonpress;
while pw ~= 1
cell = 100; % size of single cell
col = 11; % maximum number of columns in the grid
[c1, c2] = ginput(1);% detect cursor co-ordinates
cell_n = (floor(c2/cell)*col)+ (floor(c1/cell)+1);
n = cell_n;% index of cell cell number selected
n_row = floor(n/col);
n_col = mod(n,col);
% Calculations for determining co-ordinates for grid cell to be patched.
x1= (n_col * cell)- cell;
y1= (n_row * cell)+ cell;
x2= (n_col * cell);
y2= (n_row * cell)+ cell;
x3= (n_col * cell);
y3 = (n_row * cell);
x4= (n_col * cell)- cell;
y4= (n_row * cell);
x = [x1 x2 x3 x4];
y = [y1 y2 y3 y4];
p = patch(x,y,'red');% applying patch on grid
pw = waitforbuttonpress;% updating button press to detect keypress to exit
end
end
