Trying to output data to excel

Hey,

I have my code below and I'm just trying to output the data into an excel file. I tried doing the xlswrite command but it doesn't work. A friend of mine told me because my headers are a cell and my data is in a cell array. I have no idea what that means and don't know how to resolve it.

Thank You in advance for helping me

%% read data file a = xlsread('book5', 'A:H')

%% create unique points from data set 1 ext1=a(:,2); load1=a(:,4);

[ext1_u,I_unique1]=unique(ext1); load1_u = load1(I_unique1);

%% create unique points from data set 2 ext2=a(:,6); load2=a(:,8); I=(~isnan(load2)); ext2=ext2(I); load2=load2(I); [ext2_u, I_unique2] = unique(ext2); load2_u = load2(I_unique2);

%% plots plot(load1,ext1,load2,ext2)

%% Pull Unique data points for ext1 ext1_i=interp1(load1_u,ext1_u,load2_u)

%% plot again % figure subplot 211 plot(load1,ext1, load2,ext2, load2_u,ext1_i) xlabel('Load (lb)') ylabel('Extension (in)')

subplot 212 plot(load2_u,ext1_i-ext2_u) xlabel('Load (lb)') ylabel('Extension (in)')