Logical addressing to the rescue!!! :)
>> for i=1:length(interval)
c{i}=data(iswithin(data(:,2),interval(1,1),interval(1,2)),:);
end
>> whos c
Name Size Bytes Class Attributes
c 1x3 336180 cell
>> c{1}(1:5,:)
ans =
-0.1134 62.6188
-0.1084 62.6198
-0.1103 62.6208
-0.0544 62.6218
-0.0191 62.6228
>>
iswithin is my "syntactic sugar" utility routine--
>> type iswithin
function flg=iswithin(x,lo,hi)
% returns T for values within range of input
% SYNTAX:
% [log] = iswithin(x,lo,hi)
% returns T for x between lo and hi values, inclusive
flg= (x>=lo) & (x<=hi);
>>
You can collapse the loop via arrayfun; whether it's any faster or not is probably iff--
>> arrayfun(@(i1,i2) data(iswithin(data(:,2),i1,i2),:), ...
interval(:,1),interval(:,2), ...
'uniformoutput',0)
ans =
[7000x2 double]
[7000x2 double]
[7000x2 double]
>>
