[R] Converting scraped data

Dear Colleagues, I used this code to scrape data from the URL conatined within. This code should be reproducible. require(XML) library(XML) theurl - http://www.queensu.ca/cora/_trends/mip_2006.htm; tables - readHTMLTable(theurl) n.rows - unlist(lapply(tables, function(t) dim(t)[1]))

Re: [R] Converting scraped data

Hi Simon, You'll notice the test data.frame has a whole mix of characters in the columns you're interested, including a - for missing values, and that the columns you're interested in are in fact factors. as.numeric(factor) returns the level of the factor, not the value of the level. (See

Re: [R] Converting scraped data

On 10/6/2010 8:52 AM, Simon Kiss wrote: Dear Colleagues, I used this code to scrape data from the URL conatined within. This code should be reproducible. require(XML) library(XML) theurl - http://www.queensu.ca/cora/_trends/mip_2006.htm; tables - readHTMLTable(theurl) n.rows -