[BioC] justMAS function not found

[Herve Pages]

Hi James,

James Anderson wrote:
> Hi, 
> 
> I am trying to use the function justMAS to normlize a bunch of Affy arrays, I loaded the library simpleaffy into R, when I type justMAS, it can not find it. 
> 
> I am not sure whether this is related to the following warning message I got:

Of course it is!

> 
> Loading required package: genefilter
> Error in loadNamespace(i, c(lib.loc, .libPaths())) : 
>   there is no package called 'DBI'
> Error: package 'genefilter' could not be loaded

An error is not a warning! Generally speaking, and that's true with any software,
you'll find it very useful to make the distinction between an error and a warning.
Roughly speaking you'll get an error when the task could not be achieved and a
warning when the task could be achieved but maybe not in the way you would have
expected. Even if the content of an error or warning message has sometimes an
obscure meaning, it is very important to understand what kind of problem is reported:
is it an error (always a serious problem, should never be ignored) or a warning
(could be serious or not, needs further investigation)?

Cheers,
H.


> 
> BTW, I am using R 2.6.1, and the function mas5 functions well.
> 
> Thanks,
> 
> James
> 
> 
>        
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