Count occurrences of dates in an excel file

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Zekeftw
Zekeftw 2016-8-23
编辑： Andrei Bobrov 2016-8-23
Hi,
The attached excel file contains a list of dates. I need help counting the number of occurrences for each date then sum them for each week. Where the week is counted from Sun - Sat.
For example, for the week of 5/1/15 John placed 21 orders.
Thanks

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回答（2 个）

Andrei Bobrov
Andrei Bobrov 2016-8-23
编辑：Andrei Bobrov 2016-8-23
[~,~,dc] = xlsread('Orders.xlsx'); % T = readtable('Orders.xlsx');
z = dc(2:end,:); % z = table2cell(T);
t = cellfun(@ischar,z); % t = ~cellfun(@isempty,z);
nd = weekday(datenum(z(t),'dd.mm.yy'));
ds = datenum(z(t),'dd.mm.yy');
ddf = diff([nd ds]);
lo = [true;ddf(:,1) < 0 | abs(ddf(:,2)) > 7];
i0 = double(t);
i0(t) = lo;
i1 = cumsum(i0).*t + 1;
i2 = ones(size(i1,1),1) * (1:3);
out = accumarray([i1(:),i2(:)],1);
out = out(2:end,:);
KSSV
KSSV 2016-8-23
[num,txt,raw] = xlsread('Orders.xlsx') ;
dates = txt(:,1) ;
d = {'30-06-2016'} ;
% d = {'05-01-2015'} ;
idx = strcmp(dates,d) ;
count = length(find(idx==1));
  2 个评论
Zekeftw
Zekeftw 2016-8-23
Hi Dr. Siva Srinivas Kolukula,
Thanks for your response.
Looks like I stated my original post wrong. Your code seems to compare the dates to the the date stored in d. I actually need to count all that fall between 05-01-2016 and 05-07-2016, etc
I will use your code as a starting point.
Peter Perkins
Peter Perkins 2016-8-23
Your question is not quite clear to me, but you may find that converting your dates to datetime and using the week function is the way to go. Hope this helps.

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