ERDDAP™ is a web data service that is deployed at locations throughout the
world, providing easy access to petabytes of mostly satellite data, ocean
observations, fisheries data, and atmospheric data. There are now four
packages on CRAN for accessing and using data from ERDDAP™ servers and this is
just to cover some recent changes in the packages.
‘rerddap’ - this is the main package for accessing data from ERDDAP™ servers.
Among the changes in the last six months or so:
- both ‘griddap()’ and ‘tabledap()’ now have the option to return data in
parquet files.
- A new function which estimates the size of a ‘griddap()’ download without
having to make the request.
- Improvements to the vignette, including a table of contents.
- Interactive map example added to vignette (see plotdap)
‘plotdap’ - makes for easy mapping of ‘rerddap’ extracts
- Contour plots using the R package ‘isoband’
- Improved version of ‘bbox_set’ to create interactive plots using
‘plotly:ggplotly()’
‘rerddapXtracto’ - uses ‘rerddap::griddap()’ to make extracts along tracks and
within polygons (though time)
- refactoring of ‘rxtracto()’ for speed improvements
‘rerddapUtils’ - A new package with an olio of utilities to be used with
‘rerddap’
- a function that restricts the download to a specified season in each year
- a function that splits very large and out-of-memory requests.
- functions that estimate the size of a ‘griddap()’ download as well as
that of a split request without having to make the request.
- functions to deal with requests and responses for datasets on projected
coordinates systems
-Roy
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