sorry... localization is a string of characters
for instance
localization = paste("http://www.resultsfromtennis.com/
",year,"/atp/",city,".html",sep="")
where year is 2006 and city can be "wimbledon"
hence here, since the page "
http://www.resultsfromtennis.com/2007/atp/wimbledon.html"; does exist, I can
get the tables inside
but
"http://www.resultsfromtennis.com/1977/atp/shertogenbosch.html";
does not exist... is there a way to detect that the html page does not exist
?
2010/12/13 Duncan Murdoch <murdoch.dun...@gmail.com>
> On 13/12/2010 12:36 PM, Arthur Charpentier wrote:
>
>> I was wondering if there was a function like "does connection exists" ?
>>
>
> See ?showConnections.
>
>
> I am currently using loops to build up a database, and I have either
>>
>> B = getConnection(localization)
>>>
>> Error in getConnection(localization) : there is no connection -2147483648
>> In addition: Warning message:
>> In getConnection(localization) : NAs introduced by coercion
>>
>
> Where did the localization variable come from? getConnection is pretty
> rarely used.
>
>
>
>> or
>>
>> B = scan(localization)
>>>
>> Error in file(file, "r") : cannot open the connection
>> In addition: Warning message:
>> In file(file, "r") : cannot open: HTTP status was '404 Not Found'
>>
>> is there a way to test where localization is an html page, or not ? and to
>> say that if localization does exist, then scan it ?
>>
>
> What's your definition of an html page? Testing for valid html is hard.
>
> Duncan Murdoch
>
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