how to write code for 2D image using code for one dimensional plot given below?
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a = 0.1;
T = 20;
s = @(x) (2*a*x/T) .* (0<=x & x<=T/2) + (2*a*(1-x/T)) .* (T/2<=x & x<=T);
x = linspace(0, 20);
sv = s(x);
figure(1)
plot(x,sv)
hold on
for k1 = 20:20:60
plot((x+k1),sv)
end
hold off
1 个评论
Lipi
2017-7-6
编辑:Lipi
2017-7-6
I understand that your code generates a 2D plot, since you are plotting x [x-axis] verses s(x) [y-axis]. When you say ‘write code for 2D image’; are you trying to form some kind of a 2D pattern using code (given the triangular plot you have generated, it is already a 2D image)? Or are you trying to save the image programmatically? You could directly export the image from the figure window if that is what you are looking for. If you are looking to save a figure in a specific file format using code, it might help to look up the documentation on saving the current figure https://www.mathworks.com/help/matlab/ref/saveas.html .
采纳的回答
Star Strider
2017-7-6
I am still not certain what you want.
See if this works:
a = 0.1;
T = 20;
s = @(x) (2*a*x/T) .* (0<=x & x<=T/2) + (2*a*(1-x/T)) .* (T/2<=x & x<=T);
x = linspace(0, 20);
X = repmat(x, 80, 4);
sv = s(X);
figure(1)
imagesc(0:size(X,1)-1, 1:size(X,2), sv)
set(gca, 'YTick',[])
10 个评论
Star Strider
2017-8-2
It is necessary to make a few changes in the code to do what you want.
This should work:
a = 0.1;
Scale = 6; % Repition Number (10 —> 60)
T = 20/Scale;
s = @(x) (2*a*x/T) .* (0<=x & x<=T/2) + (2*a*(1-x/T)) .* (T/2<=x & x<=T);
x = linspace(0, T, T*Scale);
X = repmat(x, 1000, 10*Scale);
sv = s(X);
figure(1)
imshow(sv,[])
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