how to write equation in matlab ?
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ajeet verma
le 17 Nov 2017
Modifié(e) : ajeet verma
le 17 Nov 2017
i have an equation and trying to write in matlab but i am not getting desired result so please help me.
please find attached file for equation and result shown in red line in figure for that equation.
i am trying like
r=1000;
c=1000;
p=32;
m=8;
for i= 1:r
for j=1:c
if mod(i/(m*p),2) %odd
SP(i,j)=-pi+round((i/p)+1)*(2*pi/m) ;
else % even
SP(i,j)=pi-round(i/p)*(2*pi/m);
end
end
end
figure(1)
plot(SP)
2 commentaires
Walter Roberson
le 17 Nov 2017
In mathematics, [] indicates grouping, but does not indicate rounding unless the paper defines it as rounding. The related symbols
_ _
| x | |_ x _|
are ceiling and floor, but [ ] is not generally rounding.
Walter Roberson
le 17 Nov 2017
I have sometimes seen [A\B] notation used to indicate the size of the equivalence class of A induced by B . In graph theory it could have to do with the something about the number of vertices or edges in a graph in which B had been removed.
Réponse acceptée
Roger Stafford
le 17 Nov 2017
Modifié(e) : Roger Stafford
le 17 Nov 2017
I am guessing that brackets in this case means the same as 'floor', so your code would then be something like this:
m = 8;
P = 32;
x = linspace(0,1000,5000);
SP = zeros(1,length(x));
for i = 1:length(x)
if mod(floor(x(i)/(m*P)),2) == 0
SP(i) = pi-floor(x(i)/P)*2*pi/m;
else
SP(i) = -pi+(floor(x(i)/P)+1)*2*pi/m;
end
end
plot(x,SP)
I don't know how y enters into this.
4 commentaires
Roger Stafford
le 17 Nov 2017
Modifié(e) : Roger Stafford
le 17 Nov 2017
Added Note: My computer doesn't generate the plot shown in your image.png. Either something is wrong with the given formula, or my interpretation of the bracket symbols is in error. The image's blue curve is just the sort of function that is needed to make the needed correction to the given formula to get the orange curve, so I suspect the trouble lies with the formula.
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