sfcurve: 2x2, 3x3 and Nxn Space-Filling Curves
Implementation of all possible forms of 2x2 and 3x3 space-filling curves, 
    i.e., the generalized forms of the Hilbert curve <https://en.wikipedia.org/wiki/Hilbert_curve>, 
    the Peano curve <https://en.wikipedia.org/wiki/Peano_curve> and the Peano curve in the 
    meander type (Figure 5 in <https://eudml.org/doc/141086>). It can generates nxn curves expanded from
    any specific level-1 units. It also implements the H-curve and the three-dimensional Hilbert curve.
| Version: | 1.0.0 | 
| Depends: | R (≥ 4.0.0) | 
| Imports: | grid, Rcpp, methods, colorRamp2 | 
| LinkingTo: | Rcpp | 
| Suggests: | rmarkdown, knitr, rgl, testthat, ComplexHeatmap, igraph, digest | 
| Published: | 2024-09-13 | 
| DOI: | 10.32614/CRAN.package.sfcurve | 
| Author: | Zuguang Gu  [aut,
    cre] | 
| Maintainer: | Zuguang Gu  <z.gu at dkfz.de> | 
| License: | MIT + file LICENSE | 
| URL: | https://github.com/jokergoo/sfcurve,
https://jokergoo.github.io/sfcurve/ | 
| NeedsCompilation: | yes | 
| Materials: | NEWS | 
| CRAN checks: | sfcurve results | 
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