How to Split array to sub arrays

Question

Chao Zhang 2021-8-8

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/894767-how-to-split-array-to-sub-arrays

评论： Chao Zhang 2021-8-8

Hi, I have a question about how to split the initial array to sub arrays

%Introduce the endpoints of dividing lines(from left to right)
nlines = num - 1;%num of dividing lines
%X-coord of endpoints(every dividing line has two X-coord of endpoints)
px_title = 'Input X coordinates of endpoints of each dividing line';
px_str   = compose("X%d", 1 : 2*nlines);
str_px   = inputdlg(px_str, px_title, [1,length(px_title)+50]);
px_coord = str2double(str_px);
%Y-coord of endpoints(every dividing line has two Y-coord of endpoints)
py_title = 'Input Y coordinates of endpoints of each dividing line';
py_str   = compose("Y%d", 1 : 2*nlines);
str_py   = inputdlg(py_str, py_title, [1,length(py_title)+50]);
py_coord = str2double(str_py);
%Assign X,Y points to XY_P array
XY_P = zeros(2*nlines,2);
%Execution loop
for q = 1 : 2*nlines
    XY_P(q,1) = px_coord(q,:);
    XY_P(q,2) = py_coord(q,:);
end

x coord and y coord make up an initial array XY_P, and I want to split this into sub array

for example, the follow is the XY_P, and red, blue and black boxes are presented array1, array2 and array3 respectively, so how to achieve it? I used reshape before, but it seems not correct.