This looks not so elegant, while normally data provider must have a nice accessing API, anyway, for example you can do this:
> myAdd <- > 'http://disc2.nascom.nasa.gov/daac-bin/Giovanni/tovas/Giovanni_cgi.pl?west=60&north=50&east=70&south=-50¶ms=0|3B42_V7&plot_type=Area+Plot&byr=2014&bmo=01&bdy=31&eyr=2014&emo=01&edy=31&begin_date=1998%2F01%2F01&end_date=2014%2F01%2F31&cbar=cdyn&cmin=&cmax=&yaxis=ydyn&ymin=&ymax=&yint=&ascres=0.25x0.25&global_cfg=tovas.global.cfg.pl&instance_id=TRMM_V7&prod_id=3B42_daily&action=ASCII+Output' > myData <- read.table(myAdd, skip=5, header=T) Will give you this: > str(myData) 'data.frame': 16441 obs. of 3 variables: $ Latitude : num -50 -50 -50 -50 -50 -50 -50 -50 -50 -50 ... $ Longitude: num 60 60.2 60.5 60.8 61 ... $ AccRain : num 0 0.42 0.39 0.42 0.66 1.23 2.31 2.37 3.72 3.63 ... For choosing different parameters, for example in case of coordinates, you just need to change the values in 'myAdd' parameters after Giovanni_cgi.pl?, west, north, east, south. But you must be sure that there is a data available with those parameters, no magical error control here. On 11 April 2014 17:45, eliza botto <eliza_bo...@hotmail.com> wrote: > Dear Suzen, > > I couldn't understand. Could you please elaborate it with a small example? > > :( > > Thanks in advance. > > Eliza > >> Date: Fri, 11 Apr 2014 17:31:18 +0200 >> Subject: Re: [R] operating website through R >> From: msu...@gmail.com >> To: eliza_bo...@hotmail.com >> CC: r-help@r-project.org > >> >> You just need to pass the parameters on Giovanni_cgi.pl with >> action=ASCII+Output >> >> On 11 April 2014 17:19, eliza botto <eliza_bo...@hotmail.com> wrote: >> > Dear Users of R, >> > I wanted to operate certain slots of this website >> > (http://disc2.nascom.nasa.gov/Giovanni/tovas/TRMM_V7.3B42_daily.2.shtml) >> > through R. I wanted to operate Latitude, longitude section, plot type, >> > begin >> > and end year and ASCII Output Resolution. The filling of these slot will >> > produce and output file with I want to D/L at a certain location in my PC. >> > I have a matrix of 2 columns and 3000 rows which contain Latitude and >> > Longitude information which i want to upload automatically in the slots of >> > website. I tried to use certain web scarping techniques in R but to no use. >> > Is there a way of doing it in R. >> > thank you very much in advance, >> > Eliza >> > >> > >> > [[alternative HTML version deleted]] >> > >> > ______________________________________________ >> > R-help@r-project.org mailing list >> > https://stat.ethz.ch/mailman/listinfo/r-help >> > PLEASE do read the posting guide >> > http://www.R-project.org/posting-guide.html >> > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.