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terra

This R package is a replacement of the raster package. It has a very similar, but simpler, interface, and it is much faster.

All native computations are done in C++. Classes, methods and properties are exposed via a Rcpp module. The R side has two main S4 classes (SpatRaster and SpatVector) that represent spatial data. These classes have only slot, a reference to a C++ object. They are used to provide a "normal" "S4" R user-interface as in the raster package.

The first (alpha) release is expected by July 2019.

Installation

You need to first install the development version of "raster".

Windows

If you are on Windows, you need to first install Rtools to get a C++ compiler that R can use. After that, you need the first install development version of "raster" for "terra" to work.

Then, in R, install the packages.

library(devtools)
install.packages("raster")
#devtools::install_github("rspatial/raster")
devtools::install_github("rspatial/terra")

Mac - OSX

The libraries GDAL (>= 2.0.0), GEOS (>= 3.3.0) and Proj.4 (>= 4.8.0) are required (as for sf)

With Homebrew you can do:

brew install gdal

And now, in R, install the packages.

library(devtools)
install.packages("raster")
#devtools::install_github("rspatial/raster")
devtools::install_github("rspatial/terra")

Linux

The libraries GDAL (>= 2.0.0), GEOS (>= 3.3.0) and Proj.4 (>= 4.8.0) are required (as for sf)

To install these on Ubuntu you can do:

sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable
sudo apt-get update
sudo apt-get install libgdal-dev libgeos-dev libproj-dev 

And now, in R, install the packages.

library(devtools)
install.packages("raster")
#devtools::install_github("rspatial/raster")
devtools::install_github("rspatial/terra")

See the sf instructions for installation on other linux systems.

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Version

Install

install.packages('terra')

Monthly Downloads

210,465

Version

0.3-6

License

GPL (>=3)

Issues

Pull Requests

Stars

Forks

Maintainer

Robert Hijmans

Last Published

May 6th, 2026

Functions in terra (0.3-6)

click

Query by clicking on a map
coerce

Coercion to other object types
atan2

Two argument arc-tangent
SpatDataFrame-class

C++ classes
boundaries

Detect boundaries (edges)
buffer

Create a buffer around vector objects or raster patches
distance

Geographic distance
clamp

Clamp values
c

Combine
disaggregate

Disaggregate raster cells
contour

Contour plot
collapse

Collapse cell values from a multi-layer SpatRaster
draw

Draw a polygon, line, extent, or points
classify

Classify (or reclassify) cell values
extend

Extend
crop

Cut out a geographic subset
extent

Create, get or set a SpatExtent
extract

Extract values from a SpatRaster
compareGeom

Compare geometries of SpatRaster objects
crs

Get or set a coordinate reference system (projection)
geom

Get the geometry (coordinates) of a SpatVector
merge

Merge SpatRaster or SpatExtent objects, or a SpatVector with a data.frame
geomtype

Geometry type of a SpatVector
isLonLat

Check for longitude/latitude crs
head and tail

Show the head or tail of a Spat* object
range

Get or compute the minimum and maximum cell values
factors

Factors
initialize

Initialize a SpatRaster with values
global

global statistics
persp

Perspective plot
interpolate

Interpolate
predict

Spatial model predictions
vector-attributes

Get or replace attribute values of a SpatVector
transpose

Transpose
tmpFiles

Temporary files
plotRGB

Red-Green-Blue plot of a multi-layered SpatRaster
read and write

Read from, or write to, file
flip

Flip a raster
ifel

ifelse for SpatRaster objects
hist

Histogram
project

Change the coordinate reference system
density

Density plot
quantile

SpatRaster local quantiles
xmin

Get or set single values of an extent
xyRowColCell

Coordinates from a row, column or cell number and vice versa
rasterize

Rasterize vector data
rast

Create a SpatRaster
plot

Plot a SpatRaster or SpatVector
rotate

Rotate a SpatRaster along longitude
dimensions

Dimensions of a SpatRaster or SpatVector
sampleRegular

Take a regular sample
trim

Trim a SpatRaster
cover

Cover (replace) NA values with values of another raster
local

Local statistics
modal

modal value
slope

Compute slopes
sources

Data sources of a SpatRaster
subset-vector

Subset of a SpatVector
zoom

Zoom in on a map
unique

Unique values
zonal

Zonal statistics
subset

Subset of a SpatRaster
focal

Focal values
names

Names of Spat objects
freq

Frequency table
mask

Mask values in a SpatRaster
SpatOptions-class

Inspect of set general options for "terra"
text

Add labels to a map
math

Mathematical operations with SpatRaster objects
pairs

Pairs plot (matrix of scatterplots)
overlay

Overlay SpatRaster objects
warp

Transfer values of a SpatRaster to another one with a different geometry
select

Geometric subsetting
tapp

Apply a function to subsets of layers of a SpatRaster
terra-package

The "terra" package
shift

Shift
writeRaster

Write raster data to a file
values

Get cell values
vect

Create SpatVector objects
SpatExtent-class

Class "SpatExtent"
SpatRaster-class

SpatRaster class
aggregate

Aggregate raster cells
align

Align a SpatExtent with a SpatRaster
area

Area and length
app

Apply a function to the cells of a SpatRaster
SpatVector-class

Class "SpatVector"
adjacent

Adjacent cells
as.data.frame

Get the attributes of a SpatVector