Thanks very much angain, I'll check them out. Best regards
Le jeu. 9 janv. 2020 à 19:05, Ben Tupper <btup...@bigelow.org> a écrit : > Your assignments that look like... > > minx <- rain_data_UTM at bbox[1,1] > > are not valid R statements - and that will cause an error. Instead, > obtain a matrix of the bounding box using the bbox() function. Then > extract your coordinates from that. I think you want... > > bb <- bbox(rain_data_UTM) > minx <- bb[1,1] > maxx <- bb[1,2] > miny <- bb[2,1] > maxy <- bb[2,2] > > If you haven't seen this, https://www.rspatial.org/ , it is well worth > your time. There are a lot of other great resources about using spatial > data in R. Try searching the Rseek.org. Like this > https://rseek.org/?q=spatial+tutorials It is a gold mine. > > > On Thu, Jan 9, 2020 at 1:42 PM Bakary Faty <bakaryf...@gmail.com> wrote: > >> Thank you for appreciated reply, >> >> I explane you exactly what I want to do with this R code attached. >> I want to adapt this code to my data to build an isohyet map. >> But i have some difficulties to adapt it to my case. >> I will be very happy when you will help my to adapt this R code (attached) >> to my case. >> You can find attached the you R code, my data file and my sahefile of >> watershed. >> >> Best regards >> >> >> Le jeu. 9 janv. 2020 à 17:47, Ben Tupper <btup...@bigelow.org> a écrit : >> >>> Welcome to r-sig-geo! >>> >>> I don't think that you haven't provided us enough information so that we >>> can help. On the other hand, does the example below using expand.grid help? >>> >>> minx <- 20 >>> maxx <- 25 >>> miny <- 31 >>> maxy <- 36 >>> pixel <- 1 >>> grd <- expand.grid(x = seq(minx, maxx, by=pixel), y = seq(miny, maxy, >>> by=pixel)) >>> >>> Ben >>> >>> On Thu, Jan 9, 2020 at 11:41 AM Bakary Faty <bakaryf...@gmail.com> >>> wrote: >>> >>>> >>>> Dear, >>>> >>>> I'm writing to express my wish to join R-sig-geo list users. >>>> I was doing a search on the net to know how to build an isohyet map and >>>> I came across this R code. >>>> However, I stumbled upon a problem from the line : >>>> grd <- expand.grid(x=seq(minx, maxx, by=pixel), y=seq(miny, maxy, >>>> by=pixel)), >>>> I get the following error message: >>>> default method not implemented for type 'S4'. I want to know how >>>> resolve this error. >>>> >>>> Also, I would like to ask you only at the line level: >>>> minx <- rain_data_UTM at bbox[1,1] >>>> maxx <- rain_data_UTM at bbox[1,2] >>>> miny <- rain_data_UTM at bbox[2,1] >>>> maxy <- rain_data_UTM at bbox[2,2], >>>> if I should limit myself to "rain_data_UTM" or write completely: >>>> rain_data_UTM at bbox[,]. >>>> By the way, this is the pointfile I reconstructed. >>>> You can find it attached to the mail. >>>> >>>> Thanks in advance >>>> >>>> Best regards >>>> >>>> >>>> >>>> Bakary >>>> _______________________________________________ >>>> R-sig-Geo mailing list >>>> R-sig-Geo@r-project.org >>>> https://stat.ethz.ch/mailman/listinfo/r-sig-geo >>>> >>> >>> >>> -- >>> Ben Tupper >>> Bigelow Laboratory for Ocean Science >>> West Boothbay Harbor, Maine >>> http://www.bigelow.org/ >>> https://eco.bigelow.org >>> >>> >> >> -- >> >> >> >> Bakary >> > > > -- > Ben Tupper > Bigelow Laboratory for Ocean Science > West Boothbay Harbor, Maine > http://www.bigelow.org/ > https://eco.bigelow.org > > -- Bakary [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo
