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aggelos


aegean university

Active since 2012

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Cumulative sum per ID
Hello all, I have a large dataset like these: YTD= ID ...

5 years ago | 3 answers | 0

3

answers

Question


accumarray does not return the correct sum
Hello all, I have a table dataset like below table= Date ID x y z Profit ...

6 years ago | 1 answer | 0

1

answer

Question


how to calculate average, mean and last price of date strings
Hi, I have a time series of date times with mileseconds and what I want to do is to keep time stamps for each second (without...

8 years ago | 1 answer | 0

1

answer

Question


Failed to create signal form successive values
hi, I'm trying to create a signal of 1 and -1 with a for loop but getting an error of "Subscript indices must either be real ...

8 years ago | 1 answer | 0

1

answer

Question


How to display the selected function from a switch case statement
Hi all, I have a switch cases statement with selects the best in terms of RMSE fitting sinusoid function to my dataset. My q...

8 years ago | 2 answers | 0

2

answers

Question


How to sort multiple text files by name in a struct
Hi all, I have a series of txt files which are read with dir as a structure but the sorting in like this: '1-Apr-16.ful...

8 years ago | 1 answer | 0

1

answer

Question


explaining the parametres of MVGARCH models?
hi everyone, does anybody have experience in using the MFE toolbox of Kevin SHEppard? I have a prompleb to determine whici...

9 years ago | 0 answers | 0

0

answers

Question


daily averages of hourly data
how can I compute daily averages of hourly data in a column vector; the data have the following form and i have a total of 525...

12 years ago | 2 answers | 0

2

answers

Question


how to replace N(0,1) innovations with fractional gaussian noise ?
hi everyone, my question is, how can i use fractional gaussian noise in place of standard gaussian noise to describe the no...

12 years ago | 0 answers | 0

0

answers

Question


Formula Mean Values in Matlab code.
Hello, can anyone help to write in Matlab code the formula below. The third term with the minus sine is a double sum. (su...

12 years ago | 1 answer | 0

1

answer

Question


problem in plotting dates
hello , I'm trying to plot dates and the correspondings hourly electricity prices for a specific period by using the code ...

12 years ago | 2 answers | 0

2

answers

Question


Replace Nan with previous numbers
Hello there , I have a Variable of type double with natural gas Prices that contains Nans for dates that I don't have data and ...

12 years ago | 4 answers | 0

4

answers

Question


how to define specific indexes in a dataset?
My aim is to define indexes for an in sample and an out of sample test of model fitting. % define first and last date for...

12 years ago | 2 answers | 0

2

answers