mapview + mapview error - crs not found: is it missing? about mapview

[tim-salabim]

Can you

library(sf)

p1 = st_point(c(7,52))
p2 = st_point(c(-30,20))
sfc = st_sfc(p1, p2, crs = 4326)
sfc
st_transform(sfc, 3857)

or does that error too?

[edzer]

Please try installing the dev version of sf from r-universe, and report back whether that solved the issue. See also r-spatial/sf#2298

[MTOliveira]

@edzer @tim-salabim you were correct, the issue was connected to the sf package - I installed it from the r-universe and mapview does not give that error anymore. Thanks!

[MTOliveira]

It gives back an error, yes...

> library(sf)

> p1 = st_point(c(7,52))
> p2 = st_point(c(-30,20))

> sfc = st_sfc(p1, p2, crs = 4326)
Warning message:
In CPL_crs_from_input(x) :
  GDAL Error 1: PROJ: proj_create_from_database: C:\Program Files\PostgreSQL\9.6\share\contrib\postgis-3.1\proj\proj.db lacks DATABASE.LAYOUT.VERSION.MAJOR / DATABASE.LAYOUT.VERSION.MINOR metadata. It comes from another PROJ installation.

> sfc
Geometry set for 2 features 
Geometry type: POINT
Dimension:     XY
Bounding box:  xmin: -30 ymin: 20 xmax: 7 ymax: 52
CRS:           NA
POINT (7 52)
POINT (-30 20)

> st_transform(sfc, 3857)
Error in st_transform.sfc(sfc, 3857) : 
  cannot transform sfc object with missing crs

[tim-salabim]

I think something is wrong with you sf installation. In any case, it doesn't seem to be a mapview issue