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Hi, I just had a situation where I did A(~A) which returned an error message "NaN's cannot be converted to logicals." So I gues...

14029 views

Responded 2 years ago

Now I am trying to find the occurance of an element in a vector using sum(dta(:,size(dta,2))==3); How can accumarray be us...

2 Answers

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Asked 3 years ago

*Background* I have an excel sheet with different date formats (in excel some are in General format, some in date format tota...

I have data of the structure 3 columns by 1.5 million rows. Each column is a variable namely cocode, date, price. I would like t...

Asked 4 years ago

Yes. Your right. The file has just 3 columns with 2 numeric and 1 string column. I increased the virtual memory and the problem ...

Answered 4 years ago

I have an excel file as large as 20MB with roughly abt 1.5 million rows. I run out of memory while I perform any sort of operati...

A = [1 2 NaN; 4 NaN 6; 7 8 9] A = 1 2 NaN 4 NaN 6 7 8 9 mn = nan...

1 Answers

Asked 2 years ago

I have time series data as a pivot in an array. The first row and first column are headers. x = NaN 10...

A = NaN 100 101 102 103 104 201 2 7 3 2 2 202 NaN 8 4 5 6 203 NaN NaN 2 3 5 205...

Is it possible to find mean and std dev. of every row in a huge matrix with double data and a lot of NaN interspersed without lo...

I have read data from an excel sheet. The data Iam trying to manipulate is in the second column. First line is the header. i wou...

I have a huge file in XLSX format. While xlsread runs without memory issues, the command A = dataset(XLSFile, filename) throws t...

3 Answers

Hi, I would like to know if there are functions(specially if cellstruct would work) in MATLAB to solve my problem or do i hav...

I have time series data in a double array. The first column is datenum and all other columns are corresponding data d...

I have time series data(daily) for 10 years for 500 firms. I would like to calculate monthly beta. I have the data on an excel s...

Hi, I am trying to extract last 4 characters of a string and trying to check if it contains a '/' in it. There are similar que...

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Posted 3 years ago