[R] Help needed for getYahooData in TTR package & writing the Yahoo data to excel

David Winsemius dwinsemius at comcast.net
Sun Oct 10 05:55:01 CEST 2010


On Oct 9, 2010, at 10:54 PM, missvanilla wrote:

>
> Dear all,
>
> I'm totally new to R. Recently I've been trying to use getYahooData  
> in TTR
> package in order to download stock index daily open/high/low/close.  
> The
> downloaded data is in the format of
>
>                   Open      High         Low       Close      Volume
> 2000-01-04 18937.45 19187.61 18937.45 19002.86      0
> 2000-01-05 19003.51 19003.51 18221.82 18542.55      0
> 2000-01-06 18574.01 18582.74 18168.27 18168.27      0
> 2000-01-07 18194.05 18285.73 18068.10 18193.41      0
> 2000-01-11 18246.10 18887.56 18246.10 18850.92      0
> 2000-01-12 18780.17 18811.87 18626.92 18677.42      0
> 2000-01-13 18667.18 18845.03 18667.18 18833.29      0
> 2000-01-14 18882.99 19058.02 18733.83 18956.55      0
> 2000-01-17 19025.62 19442.58 19025.62 19437.23      0
> 2000-01-18 19412.47 19412.47 19145.17 19196.57      0
>
> However, when I attempted to write the data to excel using  
> write.table,
> dates in the first colume  become 1,2,3,4 in the excel file. Same  
> problem
> happened if write.csv was used.
>
> If you run these two lines of code you'll get what I meant.. before  
> running
> the code, package TTR needs to be loaded.
>
>> N225 <- getYahooData("^N225", 20000101, )
>> write.table(N225,"Nikkei.xls",sep='\t', row.name = TRUE , col.name  
>> = NA)

There is a well-described problem with write.table files going into  
Excel. There is no leading item or tab on the first row. You need to  
insert an extra cell and move the header over one position. Then you  
won't be misinterpreting your row.names as dates.

-- 
David
>
> Appreciate your kind assistance! Thanks a lot in advance.
>
> -- 
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>
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