Error: Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.

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Weston Davis
Weston Davis 2018-10-16
回答： Viren Gupta 2018-10-25
The function runs until the first deltat limit is satisfied then errors out while the other 3 deltat elements still need to run. Is there a way to fix this? Thank you.
function output=conedepth(y0)
rtop=2.5;ytop=4;yout=1;s=ytop/rtop; %initial conditions/constant conditions
deltat=[1,0.5,0.1,0.05]; day=10;
for k=1:4
n=day./deltat
y=y0;t=0; %starting level of water
for i=1:n
V=pi*y.^3/(3*s^2);
if y>=yout
delV=3*(sin(t).^2)-3*(y-yout).^1.5;
else
delV=(3*(sin(t).^2));
end
V=V+delV
y=(3*V*s^2/pi).^(1/3)
t=t+deltat;
end
VV(k,i)=V
yy(k,i)=y
tt(k,i)=t
end
end

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回答（1 个）

Viren Gupta
Viren Gupta 2018-10-25
The error arises at the line
VV(k,i)=V
From 'VV(k,i)' , MATLAB assumes that VV is an array/matrix. V is already a vector. Hence an element of VV must be a scalar component not a vector/array.

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