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building a single line makes degeneracies #12

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mdsumner opened this issue Feb 5, 2018 · 1 comment

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mdsumner commented Feb 5, 2018

This doesn't do what you would like, we end up with one large line and a point at each lat

library(raster)
r <- raster(extent(100, 180, -75, -30), crs = "+init=epsg:4326", res  = 5 )
proj <- "+proj=lcc +lon_0=140 +lat_0=-50 +lat_1=-70 +lat_2=-40 +datum=WGS84"
library(graticule)
g <- graticule(xmin(r), seq(ymin(r), ymax(r), by = 10), ylim = c(ymin(r), ymax(r)), proj = proj)

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mdsumner commented Feb 5, 2018

It's actually that the parallels are zero-length, should just detect this case and avoid creating them

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