# How can I plot the contour of the imaginary unit of this function phiz?

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Alexander Ruscitto il 3 Apr 2022
Risposto: Chandra il 6 Apr 2022
[x,y] = meshgrid(linspace(-4,4));
y = y.*1i;
for k = 1:8
z = x + 1i.*y;
phiz = z + z.^(-1) - 1i.*(k/(2*pi)).*log(z);
figure (4);
contour(x,y,imag(phiz),'-k');
end
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### Risposte (1)

Chandra il 6 Apr 2022
Hi,
Imaginary term generally indicates the axis of a graph, (2,3) can be written as 2+3i is some applications and magnitude gives the distance from origin, so if we want to see the imaginary term directly provide the real values in y axis
y = real(y);
%or we can provide magnitude
y = abs(y);
try different values to y and see the contour plot changes.
refer to contour for further information
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