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

Question

imarquez 2015-8-5

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/232510-why-am-i-getting-undefined-operator-for-input-arguments-of-type-cell-when-i-run-this-code

评论： Walter Roberson 2016-11-23

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.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Sean de Wolski 2015-8-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/232510-why-am-i-getting-undefined-operator-for-input-arguments-of-type-cell-when-i-run-this-code#answer_188362

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

5 个评论
显示 3更早的评论隐藏 3更早的评论

Zakia wani 2016-11-23

编辑：Zakia wani 2016-11-23

在 MATLAB Online 中打开

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 2016-11-23

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.

请先登录，再进行评论。