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university of Piraeus

2011 年からアクティブ

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質問

OLS regression for multiplr Ys, Xs
Hi all, I need to regress multiple Ys on Xs and Zs so the model to look like: Yij = aj+ bj*Xij+ kj*Zij for i=1......

約14年前 | 2 件の回答 | 0

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質問

Data Frequency Transformation
Hi all, I use a dataset of intraday stock prices at random time intervalas. Is there any code to transform these data into sp...

約14年前 | 1 件の回答 | 0

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Select/ Short rows from ASCII files
Thanks so much Fangjun! Is there any way to export the result in a new ASCII file? Panos

14年以上前 | 0

質問

Create Code frrom scratch
Hello all, I am new with MATLAB and I try to implement the below code: My inputs come from an ASCII file like: Sto...

14年以上前 | 1 件の回答 | 0

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質問

Select/ Short rows from ASCII files
Hello, I work with very large ASCII file, as the below sample STOCK DATE TIME PRICE ETE 04/01/2010 10170000 18.54 43...

14年以上前 | 2 件の回答 | 0

2

回答

質問

Itraday returns/ time series creation
Hi, I work with the below sample of (intraday) high freequency stock data: sample: STOCK DATE TIME PRICE VOLUME E...

14年以上前 | 1 件の回答 | 0

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質問

Maximum Likelihood Estimation
Hello all, I am a new in Matlab and i am trying to estimate some parameters with MLE. I try both 'mle' and the Statistical ...

14年以上前 | 1 件の回答 | 0

1

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質問

Maximum Likelixood estimation
Hello everyone I am trying to use Maximum Likelihood Estimation with two constant terms and a particularly complex function...

14年以上前 | 0 件の回答 | 0

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質問

algorithm implementation
Hello, %I work the below sample txt file: ETE 04/01/2010 10145959 18.31 500 Big Cap ETE 04/01/2010 10150000 18.01 70 Big Ca...

14年以上前 | 1 件の回答 | 1

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質問

Sum of Rows
I have the below sample of txt file: Stock Date Time Price Volume Stock Category Trade ETE 04/01/2010 10145959 18.31 500...

14年以上前 | 1 件の回答 | 0

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質問

Select rows with textscan
Hi I use the below text file: ETE 04/01/2010 10170000 18.54 430 Big Cap ABC 04/01/2010 10190000 18.34 200 Big Cap Y...

14年以上前 | 1 件の回答 | 0

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質問

sort arrays with sortrows
Hello, %I have the below txt file. Stock Date Time Price Volume Stock Category ETE 04/01/2010 10145959 18.31 500 Bi...

14年以上前 | 1 件の回答 | 0

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質問

How to Compare strings
Hello, I need to compare strings and sort in (even in alphabetical order) but without using the _sort_ code. I r...

14年以上前 | 2 件の回答 | 0

2

回答

質問

Choose specific rows from txt files
Hello, I work on the below sample of a txt file: STOCK DATE TIME PRICE VOLUME ETE 04/01/2010 10145959 18.31 500 Big Cap...

14年以上前 | 1 件の回答 | 0

1

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質問

problem in strcat
Hello, %I use the below sample of huge txt file: ETE 04/01/2010 10145959 18.31 500 Big Cap ETE 04/01/2010 10150000 18.01 ...

14年以上前 | 1 件の回答 | 0

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質問

Problem in defining a column
Hello, %I want to define the column 4 of a set of txt imported data. Thus: % I import the data like: fid = fopen('ex.tx...

14年以上前 | 2 件の回答 | 0

2

回答

質問

Export of string into ASCII file
Hello, % I have imported some data as txt from an ASCII file (stocks.txt) Since I created a new variable 'Trade' with its ...

14年以上前 | 1 件の回答 | 0

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回答

質問

Application of codes on big ASCII file.
Hi all, % I work the below code serie : % Read stock data from file fid = fopen('stocks.txt'); data = textscan(fid,'%s%s...

14年以上前 | 1 件の回答 | 0

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質問

frewind
Hello, I am trying to read as a text the data from an big ASCII file (almost 540 MB), but I get the below errr message: ...

14年以上前 | 1 件の回答 | 0

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回答

質問

New column
Hello, I work with the below part of a txt file (since the original is huge one): Stock Date Time Price Volume...

15年弱前 | 2 件の回答 | 0

2

回答

質問

Select rows from txt file
Hi, Could someone help on how can I choose specific rows from the below sample (the original txt file is actually huge): ...

15年弱前 | 2 件の回答 | 0

2

回答

質問

Creation of new column
I have an input file (ex.txt) which contains three columns 0 0 0 1 2 5 2 3 6 3 4 4 4 1 3 6 4 8 5 2 9 2 5 5 ...

15年弱前 | 2 件の回答 | 0

2

回答