script in Matlab

for i=1:100
name = [num2str(i) '.xlsx'];
[num,txt,raw] = xlsread(name);
final(:,i) = num(:,2);
end

x_axis = num(:,1); % freq bin
% barh(x_axis, final)

h = surf(final);
[m,n] = size(final);
set(h, 'EdgeColor', 'none');