Why am I getting "Undefined operator '*' for input arguments of type 'cell'." when I run this code?

Why would multiplication need to be defined in the last equation in my code but not in the ones above it?

if true
format long
a = 1 
b = 3*10^-7 
c = 5*10^-8 
f0 = 4*10^9 
sigma = 0.2 
t0 = 0 
tmax = 2*b 
t = 6*10^-9
omega = 2*pi*f
omega0 = 2*pi*f0
yt = a*exp((-(t-b)^2)/((2*c)^2));
Ff = sqrt(pi/2)*a*c*exp(-7.8957e+05 - 7.5398e+03i)*[erfi(4.2426)-erfi(-4.2426)]
Zf = (sqrt(-1)*sqrt(pi/2)*((a*c*sigma)/4)*exp(-((2*pi*f+omega0)*(c^2*(2*pi*f+omega0)+2*sqrt(-1)*b))))*{-exp(4*pi*c^2*f*omega0+2*sqrt(-1)*b*omega0)*[erfi(((tmax-b+sqrt(-1)*c^2)*(2*pi*f-omega0))/(sqrt(2)*c))-erfi(((t0-b+sqrt(-1)*c^2)*(2*pi*f-omega0))/(sqrt(2)*c))]+[erfi(((tmax-b+sqrt(-1)*c^2)*(2*pi*f+omega0))/(sqrt(-1)*c))-erfi(((t0-b+sqrt(-1)*c^2)*(2*pi*f+omega0))/(sqrt(-1)*c))]}
  % code
end

This is the code I'm trying to run and it is able to solve all the way up to Ff. I'm confused.

Answer 1

[Sean de Wolski]

You use a { which creates a cell array (container). You probably want to use a [ or ( instead.

http://www.mathworks.com/help/releases/R2015a/matlab/math/matrix-indexing.html

[imarquez]

Oh that's interesting, I didn't know that a { did that. Thank you!

[imarquez]

Maybe you can help me with my other problem then since I have been struggling with graphing yt vs time; when my time is only going to be from 0 to 6*10^-7. I have tries a ts = timeseries(t) and also using t = 0:6*10^-7 with no luck.

[Sean de Wolski]

perhaps try semilogx?

[Zakia wani]

i am getting same error.. Undefined operator '*' for input arguments of type 'cell'. for this code

f= open ('c1.fig');

sp1data = findobj(subplot(4,3,1), 'Type', 'line');
y1 = get (sp1data,'Ydata');
T1 = (-0.3164*y1+161.84);

i tried to use .* instead of only * it still shows same error.. how to multiply then

[Walter Roberson]

Your findobj is finding multiple objects. When you have multiple objects in a get then the output is returned in a cell array. Cell arrays cannot be multiplied but you could use cellfun to multiply the entries producing a cell array of results.