Hello I'm trying to work out ways of manipulating maps in R and have found various potentially useful starter sites, eg https://r-spatial.github.io/sf/reference/st_transform.html p1 = st_point(c(7,52)) p2 = st_point(c(-30,20)) sfc = st_sfc(p1, p2, crs = 4326) sfc st_transform(sfc, 3857) and https://rforjournalists.com/2021/04/10/how-to-plot-a-large-rural-area-using-ordnance-survey-data-in-r/ But when I try to run the example code R tells me that it cannot find function "st_point" (or in the other instance "st_transform") I assumed that these functions were in some package, and searching I found "sf" and "lwgeom" suggested, but installing and loading these does not help. Does anyone know where I can find the wherewithal to make these st_ functions work? Thanks Nick Wray [[alternative HTML version deleted]]
This is a good site for such searches: https://rdrr.io/ Searching on "st_point" there says it's in the 'geotidy' package on github. Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Wed, Mar 23, 2022 at 9:51 AM Nick Wray <nickmwray at gmail.com> wrote:> > Hello I'm trying to work out ways of manipulating maps in R and have > found various potentially useful starter sites, eg > > https://r-spatial.github.io/sf/reference/st_transform.html > p1 = st_point(c(7,52)) > p2 = st_point(c(-30,20)) > sfc = st_sfc(p1, p2, crs = 4326) > sfc > st_transform(sfc, 3857) > > and > https://rforjournalists.com/2021/04/10/how-to-plot-a-large-rural-area-using-ordnance-survey-data-in-r/ > But when I try to run the example code R tells me that it cannot find > function "st_point" (or in the other instance "st_transform") I assumed > that these functions were in some package, and searching I found "sf" and > "lwgeom" suggested, but installing and loading these does not help. Does > anyone know where I can find the wherewithal to make these st_ functions > work? > > Thanks Nick Wray > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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.
Hi, Did you run `library(sf)` before calling these functions? Ben On Wed, Mar 23, 2022 at 12:51 PM Nick Wray <nickmwray at gmail.com> wrote:> Hello I'm trying to work out ways of manipulating maps in R and have > found various potentially useful starter sites, eg > > https://r-spatial.github.io/sf/reference/st_transform.html > p1 = st_point(c(7,52)) > p2 = st_point(c(-30,20)) > sfc = st_sfc(p1, p2, crs = 4326) > sfc > st_transform(sfc, 3857) > > and > > https://rforjournalists.com/2021/04/10/how-to-plot-a-large-rural-area-using-ordnance-survey-data-in-r/ > But when I try to run the example code R tells me that it cannot find > function "st_point" (or in the other instance "st_transform") I assumed > that these functions were in some package, and searching I found "sf" and > "lwgeom" suggested, but installing and loading these does not help. Does > anyone know where I can find the wherewithal to make these st_ functions > work? > > Thanks Nick Wray > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. >-- Ben Tupper (he/him) Bigelow Laboratory for Ocean Science East Boothbay, Maine http://www.bigelow.org/ https://eco.bigelow.org [[alternative HTML version deleted]]