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# Antonio Melieni

13 total contributions since 2019

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Question

How can I divide a week of a timetable into hours
Hi, is it possible to devide a week of a timetable into 168 hours? I would need the means of a timetable from monday to sun...

5 jours ago | 1 answer | 0

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Question

How can I remove holidays from a timetable
Hi, How can I remove the holidays from a timetable? Thx :)

25 jours ago | 1 answer | 0

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Question

How can I group a timetable in hours 0-24h
Hi, I have a timetable with tick data of FX rates on a minutely basis. The timetable is 527040 x 4 Starting from the 01.01....

27 jours ago | 1 answer | 0

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Question

How can I extract the time column of a timetable
Hi, I need to extrct the time column of a timetable as I need to manipulate it. any Ideas?

30 jours ago | 1 answer | 0

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Question

How to sum over next delta of rows
Hi, I have a 527040 x 4 table I need a new table, that gives me for each i = size(array,1) the sum of the next delta of rows...

environ un mois ago | 0 answers | 0

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Question

How do I get the mean of always 4 columns
Hi, I have a 527040 x 16 double array I need the row mean of always 4 clomuns So I need the row mean of column 1:4 5:8 9:...

environ un mois ago | 2 answers | 0

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Question

Moving sum in a timetable
Hi, I've timetable with 2 clomuns (time column) 527040×1 datetime and 527040×1 double (1st column) , please look at my attach...

environ un mois ago | 1 answer | 0

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Question

Sum rows in timetable
I have a timetable with minutley reutrns. In each row is a timestap and the return I now want to calculate the daily returns a...

environ un mois ago | 1 answer | 0

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Question

How can I calculate a row mean of a timetable
Hi I have a 527400x4 timetable and now I want to calculate the mean of each row any ideas=

environ un mois ago | 0 answers | 0

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Question

convert .xlsx file into a timetable
Hi :) I have the following excel sheet and I want to convert it into a time table. The first row should be the "datetime" ro...

environ 2 mois ago | 2 answers | 0

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Question

matrix log of certain columns
Hi :) I have to matrices 527040x4 and 527040x4 now i want to calc the log(m1c1) + log(m2c1), log(m1c2)+log(m2c2), log(m1c3)...

environ 2 mois ago | 1 answer | 0

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Question

Mean over specific columns
Hi :) I have a 450x42 table. I would like to calculate the mean over cloumns 2:5 7:10 12:15 and so mean([2:5],2) mean([7:1...

environ 2 mois ago | 1 answer | 0