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st_contour

Compute or plot contour lines or sets

Description

Compute contour lines or sets

Usage

st_contour(
  x,
  na.rm = TRUE,
  contour_lines = FALSE,
  breaks = classInt::classIntervals(na.omit(as.vector(x[[1]])))$brks
)

Arguments

x

object of class stars
na.rm

logical; should missing valued cells be removed, or also be converted to features?
contour_lines

logical; if FALSE, polygons are returned (contour sets), otherwise contour lines
breaks

numerical; values at which to "draw" contour levels

Details

this function requires GDAL >= 2.4.0

See Also

for polygonizing rasters following grid boundaries, see st_as_sf with arguments as_points=FALSE and merge=TRUE; contour plots contour lines using R's native algorithm (which also plots contour levels)

stars

Spatiotemporal Arrays, Raster and Vector Data Cubes

v0.5-2
Apache License
Authors
Edzer Pebesma [aut, cre] (<https://orcid.org/0000-0001-8049-7069>), Michael Sumner [ctb] (<https://orcid.org/0000-0002-2471-7511>), Etienne Racine [ctb], Adriano Fantini [ctb], David Blodgett [ctb]
Initial release

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