R help - Jun 2010 - merge.zoo and fill

Hello again,

I merge different zoo time series with prices at different dates. This 
returns a multivariate zoo object with NA's at various points i.e.,

2010-02-28     NA     NA      NA       NA   850.2  2444.4     NA      
NA      NA      NA     NA      NA       NA
2010-03-01   61.1   55.3    61.5    81.24      NA      NA 1712.2     3.3 
11139.3   163.7 2242.4  9015.6  109.791
2010-03-31     NA     NA      NA       NA   846.5  2439.0     NA      
NA      NA      NA     NA      NA       NA
2010-04-01   66.9   49.4    65.7    84.48      NA      NA 1700.6     3.8 
11203.0   164.4 2245.7  9064.5  109.887
2010-04-30     NA     NA      NA       NA   838.0  2440.0     NA      
NA      NA      NA     NA      NA       NA
2010-05-01   66.6   45.6    65.7    73.84      NA      NA 1705.3     4.0 
11252.0   165.1 2248.4  9113.9  110.065

Will the "fill" parameter of the zoo.merge() allow a missing value for
each zoo object merged  to take the last available (previous in time) 
price for that particular time series or one has to do that using  the 
na.locf() command afterwards?

I want ot keep the series as zoo and not convert to other formats or 
interpolate (as in the FAQ)....

Thanks,
Costas

On Wed, Jun 30, 2010 at 10:05 AM, Research <risk2009 at ath.forthnet.gr>
wrote:
> Hello again,
>
> I merge different zoo time series with prices at different dates. This
> returns a multivariate zoo object with NA's at various points i.e.,
>
> 2010-02-28 ? ? NA ? ? NA ? ? ?NA ? ? ? NA ? 850.2 ?2444.4 ? ? NA ? ? ?NA
> ?NA ? ? ?NA ? ? NA ? ? ?NA ? ? ? NA
> 2010-03-01 ? 61.1 ? 55.3 ? ?61.5 ? ?81.24 ? ? ?NA ? ? ?NA 1712.2 ? ? 3.3
> 11139.3 ? 163.7 2242.4 ?9015.6 ?109.791
> 2010-03-31 ? ? NA ? ? NA ? ? ?NA ? ? ? NA ? 846.5 ?2439.0 ? ? NA ? ? ?NA
> ?NA ? ? ?NA ? ? NA ? ? ?NA ? ? ? NA
> 2010-04-01 ? 66.9 ? 49.4 ? ?65.7 ? ?84.48 ? ? ?NA ? ? ?NA 1700.6 ? ? 3.8
> 11203.0 ? 164.4 2245.7 ?9064.5 ?109.887
> 2010-04-30 ? ? NA ? ? NA ? ? ?NA ? ? ? NA ? 838.0 ?2440.0 ? ? NA ? ? ?NA
> ?NA ? ? ?NA ? ? NA ? ? ?NA ? ? ? NA
> 2010-05-01 ? 66.6 ? 45.6 ? ?65.7 ? ?73.84 ? ? ?NA ? ? ?NA 1705.3 ? ? 4.0
> 11252.0 ? 165.1 2248.4 ?9113.9 ?110.065
>
> Will the "fill" parameter of the zoo.merge() allow a missing
value for each
> zoo object merged ?to take the last available (previous in time) price for
> that particular time series or one has to do that using ?the na.locf()
> command afterwards?
Yes, use na.locf after merging.  fill is used to fill with a constant
value such as zero.