how to convert a waveform in 2D matrix?

Question

ajeet verma 2017-5-31

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/342650-how-to-convert-a-waveform-in-2d-matrix

编辑： KSSV 2017-5-31

i want to generate triangular fringe pattern without using meshgrid function i have a code for triangular wave and i want to convert it into fringe pattern 2D matrix.

%triangular wave form
t=0:1/100:1;
f=5;
I3=asin(sin(2*pi*f*t));
plot(I3)

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

KSSV 2017-5-31

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/342650-how-to-convert-a-waveform-in-2d-matrix#answer_269006

在 MATLAB Online 中打开

YOu can use repmat

%triangular wave form
t=0:1/100:1;
f=5;
I3=asin(sin(2*pi*f*t));
plot(I3)
N = 101 ;
iwant = repmat(I3,N,1) ;
pcolor(iwant)
shading interp

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

ajeet verma 2017-5-31

编辑：KSSV 2017-5-31

在 MATLAB Online 中打开

all right but i want to create matrix using for loop for example

% sinusoidal fringe fringe
m=1000;
n=1000;
f1=20;  % No. of vertical fringes
f2=0;  % No. of horizontal fringes
for i=1:m
    for j=1:n
        a(i,j)=exp(1i*(2*pi*(f1*j/n+f2*i/m)));
    end
end
imshow(a,[])