# Rectangle wave in MATLAB App Designer

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Tejas Mahajan on 23 Nov 2020
Commented: Tejas Mahajan on 25 Nov 2020
I'm using App designer for plotting rectangular graph for the points inputed by the user. For EX- if user give values for Yaxis as 1 , 2 ,4 , 5 and 2, 4, 1 , 3 for the Xaxis corresponding to the values of Yaxis. From this given data how can i plot rectangular graph for this given 4 points in MATLAB App Designer.
##### 2 CommentsShowHide 1 older comment
Tejas Mahajan on 23 Nov 2020
?

Ameer Hamza on 23 Nov 2020
First convert the given points in the correct order for drawing a polygon
x = [2, 4, 1, 3];
y = [1, 2, 4, 5];
pts = [x(:) y(:)];
idx = boundary(pts);
pts = pts(idx, :);
Then either use plot() or patch()
plot(pts(:,1), pts(:,2))
% or
patch(pts(:,1), pts(:,2), 'r')
##### 2 CommentsShowHide 1 older comment
Tejas Mahajan on 25 Nov 2020
t = app.EntertheSignalEditField.Value;
t1 = str2double(strsplit(t));
x = 1 :numel(t1);
thats how im going to take values for Y axis from user and print it
user will be giving values in this format - 1 2 3 4 (using space not comma)

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