tiler package provides a tile generator function for creating map tile sets for use with packages such as
leaflet. In addition to generating map tiles based on a common raster layer source, it also handles the non-geographic edge case, producing map tiles from arbitrary images. These map tiles, which have a a non-geographic simple coordinate reference system, can also be used with
leaflet when applying the simple CRS option.
Map tiles can be created from an input file with any of the following extensions:
nc for spatial maps and
bmp for basic images.
This package helps R users who wish to create geographic and non-geographic map tiles easily and seamlessly with only a single line of R code. The intent is to do this with a package that has
- minimal heavy package dependencies.
- minimal extraneous general features and functions that do not have to do with tile generation.
- to create tiles without having to code directly in other software, interact directly with Python, or make calls at the command line; allowing the R user to remain comfortably within the familiar R environment.
- to support the creation on map tiles from raw images for users who wish to create non-standard maps, which may also be followed by georeferencing locations of interest in the simplified coordinate reference system of the map image.
tiler from CRAN with
Install the development version from GitHub with
# install.packages("remotes") remotes::install_github("ropensci/tiler")
For non-geographic tiles, using a
png file is recommended for quality and file size.
jpg may yield a lower quality result, while a large, high resolution
bmp file may have an enormous file size compared to
bmp are optionally supported by
tiler. This means they are not installed and imported with
tiler. It is assumed the user will provide
png images. If using
bmp and the packages
bmp are not installed, respectively,
tile() will print a message to the console notifying of the required package installations.
This package requires Python and the
gdal library for Python. Windows users are recommended to install OSGeo4W as an easy way to obtain the required
gdal support for Python in Windows. See
tiler_options() or the package vignette for more information.
Please note that the
tiler project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.