volcano2: Updated topographic information on Auckland's Maungawhau...

In dieghernan/tidyterra: 'tidyverse' Methods and 'ggplot2' Helpers for 'terra' Objects

Updated topographic information on Auckland's Maungawhau volcano

Description

Probably you already know the volcano dataset. This dataset provides updated information of Maungawhau (Mt. Eden) from Toitu Te Whenua Land Information New Zealand, the Government's agency that provides free online access to New Zealand’s most up-to-date land and seabed data.

Format

A matrix of 174 rows and 122 columns. Each value is the corresponding altitude in meters.

Note

Information needed for regenerating the original SpatRaster file:

• resolution: c(5, 5)

• extent: ⁠1756969, 1757579, 5917003, 5917873⁠ (xmin, xmax, ymin, ymax)

• coord. ref. : NZGD2000 / New Zealand Transverse Mercator 2000 (EPSG:2193)

Source

Auckland LiDAR 1m DEM (2013).

DEM for LiDAR data from the Auckland region captured in 2013. The original data has been downsampled to a resolution of 5m due to disk space constrains.

Data License: CC BY 4.0.

See Also

volcano

Other datasets: cross_blended_hypsometric_tints_db, grass_db, hypsometric_tints_db, princess_db

Examples

data("volcano2")
filled.contour(volcano2, color.palette = hypso.colors, asp = 1)
title(main = "volcano2 data: filled contour map")

# Geo-tag
# Empty raster

volcano2_raster <- terra::rast(volcano2)
terra::crs(volcano2_raster) <- pull_crs(2193)
terra::ext(volcano2_raster) <- c(1756968, 1757576, 5917000, 5917872)
names(volcano2_raster) <- "volcano2"

library(ggplot2)

ggplot() +
  geom_spatraster(data = volcano2_raster) +
  scale_fill_hypso_c() +
  labs(
    title = "volcano2 SpatRaster",
    subtitle = "Georeferenced",
    fill = "Elevation (m)"
  )

dieghernan/tidyterra documentation built on Feb. 20, 2025, 4:18 p.m.