how to write code for 2D image using code for one dimensional plot given below?

2 次查看（过去 30 天）
ajeet verma
ajeet verma 2017-7-6
回答： ajeet verma 2017-8-4
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
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 .

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Star Strider
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
显示 8更早的评论
Star Strider
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,[])
ajeet verma
ajeet verma 2017-8-3
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

请先登录，再进行评论。

更多回答（1 个）

ajeet verma
ajeet verma 2017-8-4
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

类别

在 Help Center 和 File Exchange 中查找有关 Correlation and Convolution 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by