App designer Edit field, position

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Eliska Paulikova
Eliska Paulikova 2023-3-17
评论： Voss 2023-3-19
thisFrame = read(vid, framesToRead(h));
pos1=app.CTRLVEditField.Value
str = strrep(pos1, '[', ''); % Odstranění závorek
str = strrep(str, ']', '');
values= split(str, ','); % Rozdělení řetězce podle čárky
pos = str2double(pos1) % Převod na čísla
cr=imcrop(thisFrame,pos);
Hello, I work in App designer, where I put into Edit filed the area I would like to crop in this type [1 2 3 4], but in the position cr=imcrop ... the matlab says
Error using images.internal.crop.parseInputsOverTwo>validateRectangle
Input number 2, RECT, is expected to contain 4 elements.
Error in images.internal.crop.parseInputsOverTwo (line 54)
validateRectangle(spatial_rect,2);
Error in imcrop (line 104)
images.internal.crop.parseInputsOverTwo(varargin{:});
How can I solve this problem. Thank you.

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采纳的回答

Voss
Voss 2023-3-17
Ran in:
pos1 = "[1 2 3 4]";
pos = str2num(pos1)
pos = 1×4
1 2 3 4

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