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Ekaterina Serikova


自 2016 起处于活动状态

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统计学

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How to see the time difference of the same day for different time zones?
Hello! Could anybody help me in time difference issue? I have a vector of dates with time, char type, like this: "29-Jan-2...

8 years 前 | 2 个回答 | 0

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How can I insert a sequental columns in a matrix with a lag of three columns?
Dear all, I have a two-dimensional matrix A, which contains 914 columns. I would like to create a matrix B and insert every c...

8 years 前 | 1 个回答 | 0

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How to import dates so that MatLab sees them?
Dear all, I know that that problem was widely discussed, but still none of the previous solutions work for me (( I have a table...

8 years 前 | 1 个回答 | 0

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How to change to nan values in one matrix based on another logical matrix?
Dear MatLab experts, I have two matrixes: "First" (24 000 by 915) and "Second" (24 000 by 915). "First" consists of differen...

8 years 前 | 1 个回答 | 0

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Why log returns in MatLab are different from log returns in Excel?
Hello, I'm completely stuck with return calculation in matlab. I have three different lines of code that deliver me the same ret...

8 years 前 | 1 个回答 | 0

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How to set a condition for sequential number of non NaN values in a vector?
Hello, I have a matrix like that: NaN -0.00042 0.00073 -0.00298 NaN NaN -0.00114 0.00029 0.00265 NaN NaN -0....

8 years 前 | 2 个回答 | 0

2

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Subscript indices must either be real positive integers or logicals only in the loop
Dear all, I'm stuck with the error "Subscript indices must either be real positive integers or logicals." in the code below. ...

8 years 前 | 2 个回答 | 0

2

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How to make 30min intervals from 1min data taking the previous value for NaNs?
Hello, I have a matrix of type double(below). It consists of 1min stock prices (StockA, StockB, etc.). Year ...

8 years 前 | 2 个回答 | 0

2

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How can I make a logical array by comparing two date vectors?
Hello, could you please help me on the following issue. I imported an Excel file containing the vector of dates (44 by 1, type ...

8 years 前 | 2 个回答 | 0

2

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