how to convert a waveform in 2D matrix?

31 May 2017
1 Answer
Answer Accepted
Updated 31 May 2017
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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)

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 Accepted Answer

KSSV
KSSV on 31 May 2017

0 votes

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

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ajeet verma
ajeet verma on 31 May 2017
Edited: KSSV on 31 May 2017
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,[])
this is sinusoidal fringe pattern and i want to create triangular as i asked

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Asked:

ajeet verma
ajeet verma
on 31 May 2017

Edited:

KSSV
KSSV
on 31 May 2017

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