cst10: Antarctic coastline

In anglr: Mesh Topology and Visualization for Spatial Data

Description

Antartica features and coastline, with somewhat spurious precision.

Usage

cst10

Format

An object of class SpatialPolygonsDataFrame with 372 rows and 2 columns.

Details

In sp format. Interesting for exploring precision issues with DEL0() see issue 7.

Examples

p <- PATH0(cst10)
# DEL0(p)  ## fails as does DEL0(cst10)
# fails at 14 and crashes R in DEL0() in R version 4.0.0 RC (2020-04-17 r78247) on
# windows
p$vertex$x_ <- signif(p$vertex$x_, 13)
p$vertex$y_ <- signif(p$vertex$y_, 13)
DEL0(p)

## compare 14993 unique vertices after rounding to
silicate::sc_vertex(p)     ## 21875

silicate::sc_vertex(cst10) ## 21875

anglr documentation built on July 29, 2020, 9:06 a.m.