Package index

Data structures

Variable()

Variable: a named-dimension array

DataArray()

DataArray: a Variable with coordinates

Dataset()

Dataset: a collection of aligned Variables on shared dimensions

as_variable()

Quick Variable constructor from a named-dim array

Coordinates and indexes

Index() index_dims() index_sizes() index_coords() index_sel() index_isel() index_drop() index_equals()

Indexes: the contract between labels and positions

coordinates

Coordinate classes

ImplicitCoord()

Create an implicit (regular-grid) coordinate

ExplicitCoord()

Create an explicit (irregular) coordinate

coord_dim()

Get the dimension name of a coordinate

coord_length()

Get the length of a coordinate

coord_lookup()

Look up integer index for a coordinate value

coord_slice()

Slice a coordinate by integer indices

coord_values()

Get the values of a coordinate

AffineIndex()

Affine (geotransform) index

as_geotransform()

Get the GDAL geotransform of an AffineIndex

set_affine_index()

Combine two regular coordinates into an AffineIndex

Selection

isel() sel()

Coordinate-based indexing

ds_dims()

List dimension names and sizes across a Dataset

Arithmetic and broadcasting

ops

Arithmetic operations on Variables and DataArrays

broadcasting

Dimension-aware broadcasting

Reductions

nd_mean() nd_sum() nd_min() nd_max()

Reductions along named dimensions

Reading data

open_dataset()

Open a dataset from a file or URL

open_raster()

Open a raster band as a lazy DataArray

cf_decode_time()

Decode CF time values to R Date or POSIXct

lazy-data

Lazy data in a Variable

collect()

Read lazy data into memory

Methods

ndim() shape()

Number of dimensions and shape of a Variable

print-methods

Print methods for ndr objects

as.data.frame(<ndr::DataArray>)

Coerce to data frame (long format)

as.list(<ndr::Dataset>)

Convert a Dataset to a list of data frames

`$`(<ndr::Dataset>)

Extract a DataArray from a Dataset

names(<ndr::Dataset>)

Variable names in a Dataset