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 Commento
Lipi
Lipi il 6 Lug 2017
Modificato: Lipi il 6 Lug 2017
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 .

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Star Strider
Star Strider il 6 Lug 2017
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 Commenti
Star Strider
Star Strider il 2 Ago 2017
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,[])
ajeet verma
ajeet verma il 3 Ago 2017
i have generated a code for two step phase shifting wave form, code is here: clc; clear all; %TWO STEP PHASE SHIFTING TRIANGULAR TECHNIQUE (WAVE FORM) Imax=0.8; Imin=0.2; Im=Imax-Imin; T = 20; s1= @(x) ((2*Im*x/T)+Imin+Im/2).*(0<=x & x<=T/4) +((-2*Im*x/T)+Imin+3*Im/2).*(T/4<=x & x<=3*T/4)+((2*Im*x/T)+Imin-3*Im/2).*(3*T/4<=x & x<=T); s2= @(x) ((-2*Im*x/T)+Imin+Im/2).*(0<=x & x<=T/4) + ((2*Im*x/T)+Imin-Im/2).*(T/4<=x & x<=3*T/4)+((-2*Im*x/T)+Imin+5*Im/2).*(3*T/4<=x & x<=T); x = linspace(0, 20); X = repmat(x, 1000, 10); I1 = s1(x); I2 = s2(x); figure(1) plot(x,I1,x,I2) it is working but like wise when we generate a code for three step phase shifting code is not working so please help three step phase shifting code is here; clc; clear all; % THREE STEP PHASE SHIFTING TRIANGULAR TECHNIQUE Imax=0.8; Imin=0.2; Im=Imax-Imin; T = 20; s1= @(x) ((2*Im*x/T)+Imin+Im/2).*(0<=x & x<=T/4) +((-2*Im*x/T)+Imin+3*Im/2).*(T/4<=x & x<=3*T/4)+((2*Im*x/T)+Imin-3*Im/2).*(3*T/4<=x & x<=T); s2= @(x) ((2*Im*(x+T/3)/T)+Imin+Im/2).*(0<=(x+T/3) & (x+T/3)<=T/4) + ((-2*Im*(x+T/3)/T)+Imin+3*Im/2).*(T/4<=(x+T/3) & (x+T/3)<=3*T/4)+((2*Im*(x+T/3)/T)+Imin-3*Im/2).*(3*T/4<=(x+T/3) & (x+T/3)<=T); s3= @(x) ((2*Im*(x+2*T/3)/T)+Imin+Im/2).*(0<=(x+2*T/3) & (x+2*T/3)<=T/4) + ((-2*Im*(x+2*T/3)/T)+Imin-Im/2).*(T/4<=(x+2*T/3) & (x+2*T/3)<=3*T/4)+((2*Im*(x+2*T/3)/T)+Imin-3*Im/2).*(3*T/4<=(x+2*T/3) & (x+2*T/3)<=T);
x = linspace(0, 20); X = repmat(x, 1000, 10); I1 = s1(x); I2 = s2(x); I3 = s3(x); figure(1) plot(x,I1,x,I2,x,I3) for more detail please find attachment

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ajeet verma
ajeet verma il 4 Ago 2017
i am trying to create trapezoidal wave form but getting some error i don't know where is wrong please help my code is: %% FIRST TRAPEZOIDAL WAVE FORM clc; clear all; imx=8; imn=2; T = 20; s1= @(x) (imx+imn).*(0<=x & x<=T/6) +(imx+imn*(2-6*x/T)).*(T/6<=x & x<=T/3)+(imx).*(T/3<=x & x<=2*T/3)+(imx+imn(6*x/T-4)).*(2*T/3<=x & x<=5*T/6); x = linspace(0, 20); I1 = s1(x); figure(1) plot(x,I1) %% SECOND TRAPEZOIDAL WAVE FORM clc; clear all; imx=8; imn=2; T = 20; s2= @(x) (imx+imn*(6*x/T)).*(0<=x & x<=T/6) +(imx+imn).*(T/6<=x & x<=T/2)+(imx+imn*(4-6*x/T)).*(T/2<=x & x<=2*T/3)+(imx).*(2*T/3<=x & x<=T); x = linspace(0,20); I2 = s2(x); figure(1) plot(x,I2) %% % THIRD TRAPEZOIDAL WAVE FORM clc; clear all; imx=8; imn=2; T = 20; s3= @(x) (imx).*(0<=x & x<=T/3) +(imx+imn*(6*x/T-2)).*(T/3<=x & x<=T/2)+(imx+imn).*(T/2<=x & x<=5*T/6)+(imx+imn(6-6*x/t)).*(5*T/6<=x & x<=T); x = linspace(0,20); I3 = s3(x); figure(1) plot(x,I3) please find attachment

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