This article is originally published at https://blog.snap.uaf.edu
mapmate is an R package for map- and globe-based data animation pre-production. Specifically,
mapmate functions are used to generate and save to disk a series of global map graphics that make up a still image sequence, which can then be used in video editing and rendering software of the user’s choice. This package does not make simple gif animations directly from R, which can be done with packages like
mapmate is more specific to maps, hence the name, and particularly suited to high-resolution png image sequences of 3D globe plots of the Earth.
changes in mapmate 0.0.2 (Release date: 2016-10-26)
- Updated functions, help documentation and examples.
- Refactored introductory vignette.
- Additional unit tests included.
- Change to the behavior of
- Additional restrictions imposed on acceptable inputs to functions.
- Explicit, required
idargument replaced the previously assumed presence of a
frameIDdata frame column.
- No more internal function conversion of
idcolumn name to
frameIDwhen originally named something else in any of the package functions. Non-standard evaluation is used to avoid dependence on a fixed name.
- Added convenient wrapper function,
save_seq, for maps or time series line plots processed in either series or parallel (Linux-only, via
do_projectionhas been generalized to operate on data frames containing multiple unique plot frame ID values in the specified
do_projectionhas been generalized to output the subsetted data frame with its original columns as before, or with
keep=TRUE, the entire input data frame along with an additional boolean
- Bug fixes
The package also contains a simple Shiny app that displays how package function arguments for longitude, latitude, and rotation axis orientation work together to produce a 3D globe display of the Earth from a user-specified perspective.
devtools::install_github("leonawicz/mapmate") library(mapmate) runOrtho()
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