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
pointfile.csv
Description: MS-Excel spreadsheet
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