[R-sig-Geo] help for select two columns in a data frame

[Kamran Safi]

Hi,

sample_real <- sample[, c(2,4)]
writeOGR(sample_real, ".", "sample_real", driver="ESRI Shapefile")

should do the job.

Kami


gianni lavaredo wrote:
> sorry for the easy questions but I have this problem. I had read Help but I
> didn't find this question. Sorry for desturbing but I am a brand new in R,
> sorry again
>
> # I have a shape file with 4 column (soil, ID, country, pH)
>
> sample <- readOGR(".", "sample")
> summary("sample")
> # I wish select only the ID (2 column) and pH (4 column)
> # in help I found this sw[1:3] for select the 1°,2°,3° columns, but I wish
> to select only the
> # 2° and 4°
>
> sample_real <- sample[?????]
> writeOGR(sample_real, ".", "sample_real", driver="ESRI Shapefile")
>
> thanks and sorry again for the question and for your time
>
> Gianni
>
>
> sampe <-
>
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>
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