| Title: | Intermediate Forms of Raster Grids |
|---|---|
| Description: | Raster grids and quads as first class types with helpers. Provides a low level API for generating mesh index and vertices from the simplest abstraction of raster grid, input dimension and (optionally) extent to generate components of meshes for downstream visualization and efficient coordinate transformation. API functions may be 'Linked To' in the R headers library way. |
| Authors: | Michael D. Sumner [aut, cre] |
| Maintainer: | Michael D. Sumner <[email protected]> |
| License: | MIT + file LICENSE |
| Version: | 0.0.1 |
| Built: | 2024-12-05 03:41:30 UTC |
| Source: | https://github.com/hypertidy/quad |
An elevation data set of the world.
A matrix of 360x180 with elevation values for the world on the extent 'c(xmin = -180, xmax = 180, ymin = -90, ymax = 90)'. The data is in "raster-order", i.e. the order used by [rasterImage()]. See the [ximage package](https://github.com/hypertidy/ximage) for convenient visualization.
Data obtained from GEBCO 2021, see the 'data-raw/' folder for details.
Title
quad_index(dimension, ydown = TRUE)quad_index(dimension, ydown = TRUE)
dimension |
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ydown |
Title
quad_vert(dimension, ydown = TRUE, zh = FALSE)quad_vert(dimension, ydown = TRUE, zh = FALSE)
dimension |
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ydown |
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zh |