How can I write all month's last dates for a given period of time?
2 views (last 30 days)
Show older comments
Hello guys. Well I have daily time series form 1990-2015
% code
b=726867;
a=9125;
for i=1:a
b=b+1;
BigMatrix(i,1)=b;
end
BigMatrix=cellstr(datestr(BigMatrix));
Now I want to make another variable where I have only last date of months for a same period of time.
Thanks in advance
0 Comments
Accepted Answer
Titus Edelhofer
on 28 Jan 2015
Hi,
first of all: you don't need the loop
BigMatrix = b + (1:a);
BigMatrixStr = cellstr(datestr(BigMatrix));
For the last day of a month you have different possibilities. One is to use datevec and note, that the last day of a month is one day before the first of the next month:
% add one day and convert to date vectors:
BigMatrixVec = datevec(BigMatrix+1);
% remove all that are not the first of a month
BigMatrixVec(BigMatrixVec(:,3)~=1, :) = [];
% and subtract that one day again:
BigMatrixStrLast = cellstr(datestr(datenum(BigMatrixVec)-1));
Or use the datetime object that comes with R2014b:
dt = datetime(BigMatrix, 'ConvertFrom', 'datenum');
t = unique(dateshift(dt, 'end', 'month'));
% remove the last month if it's past the last dt
t(t>dt(end)) = [];
Titus
More Answers (2)
Sean de Wolski
on 28 Jan 2015
You could use lbusdate to get the last business day of the month specifying no weekend days:
weekend = zeros(1,7); % that's depressing :)
web(fullfile(docroot, 'finance/lbusdate.html'))
0 Comments
See Also
Categories
Find more on Dates and Time in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!