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Re: how to calculate mean for many files
From: |
Sergei Steshenko |
Subject: |
Re: how to calculate mean for many files |
Date: |
Mon, 14 Dec 2009 03:55:54 -0800 (PST) |
--- On Sun, 12/13/09, febty febriani <address@hidden> wrote:
> From: febty febriani <address@hidden>
> Subject: Re: how to calculate mean for many files
> To: address@hidden
> Date: Sunday, December 13, 2009, 9:55 PM
> For Jaroslav, I am sorry so much. I want to
> send my email to octave forum, not your email.
>
> For everyone, below my problem.
> I grabbed from my previous email.
>
> ###
> I am trying to describe my problem clearer. I am sorry
> there is some misunderstanding with my description.
>
> I
> have many files of data (total of files is about 365
> files). Every file
> has 9 columns and 36 rows. How to find the mean of every
> row and column
> from files? For example :
>
>
> the first file
>
> 1 1 2 3 ... 6
> 2 2 1 4 ... 5
> .
> .
> .
> 3 4 2 1 .... 2
>
> the second file
>
>
>
> 2 1 5 3 ... 2
>
> 2 1 1 2 ... 1
>
> .
>
> .
>
> .
>
> 4 1 1 2 .... 1
>
>
> for above sample matrix, I will get mean for every row and
> column is
>
> 1.5 1 3.5 3 ... 4
> 2 1.5 1 3 ... 3
> .
> .
> .
> 3.5 2.5 1.5 1.5 ... 1.5
>
>
> ####
>
> any kind of help is appreciated.
> Thanks very much for your kind responses.
>
> Regards,
> febty
>
>
> 2009/12/14 febty febriani <address@hidden>
>
> Hi everyone
>
> I am trying to describe my problem clearer. I am sorry
> there is some misunderstanding with my description.
>
> I have many files of data (total of files is about 365
> files). Every file has 9 columns and 36 rows. How to find
> the mean of every row and column from files? For example :
>
>
> the first file
>
> 1 1 2 3 ... 6
> 2 2 1 4 ... 5
> .
> .
> .
> 3 4 2 1 .... 2
>
> the second file
>
>
>
> 2 1 5 3 ... 2
>
> 2 1 1 2 ... 1
>
> .
>
> .
>
> .
>
> 4 1 1 2 .... 1
>
>
> for above sample matrix, I will get mean for every row and
> column is
>
> 1.5 1 3.5 3 ... 4
> 2 1.5 1 3 ... 3
> .
> .
> .
> 3.5 2.5 1.5 1.5 ... 1.5
>
>
>
>
> any kind of help is appreciated.
> Thanks very much for your kind responses.
>
> febty
>
> --
>
> ******
> febty febriani
> Indonesian Institute of Sciences
> Research Center for Physics
>
>
> Kompleks PUSPIPTEK
> Serpong, Indonesia, 15314
>
>
>
>
> --
>
> ******
> febty febriani
> Indonesian Institute of Sciences
> Research Center for Physics
> Kompleks PUSPIPTEK
> Serpong, Indonesia, 15314
>
>
It is easy to calculate mean in/for a matrix, so you need to load each next
file into a matrix and then add that matrix with initially zeroed one -
the latter one is called accumulator
Then you'll divide what is necessary in the accumulator by N, where N is
number of your files.
I.e. you need to know how to load a file into a matrix - I think there is
'load' operator in 'octave', look it up.
Regards,
Sergei.
- Re: how to calculate mean for many files, (continued)
- Re: how to calculate mean for many files, febty febriani, 2009/12/14
- Re: how to calculate mean for many files, Jaroslav Hajek, 2009/12/14
- Re: how to calculate mean for many files, Sergei Steshenko, 2009/12/14
- Re: how to calculate mean for many files, febty febriani, 2009/12/15
- Re: how to calculate mean for many files, Jaroslav Hajek, 2009/12/15
- Re: how to calculate mean for many files, febty febriani, 2009/12/15
- Re: how to calculate mean for many files, Jaroslav Hajek, 2009/12/15
- Re: how to calculate mean for many files, febty febriani, 2009/12/15
- Re: how to calculate mean for many files, Sergei Steshenko, 2009/12/14
- Re: how to calculate mean for many files, Sergei Steshenko, 2009/12/14
Re: how to calculate mean for many files,
Sergei Steshenko <=