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terra (version 1.8-21)

Spatial Data Analysis

Description

Methods for spatial data analysis with vector (points, lines, polygons) and raster (grid) data. Methods for vector data include geometric operations such as intersect and buffer. Raster methods include local, focal, global, zonal and geometric operations. The predict and interpolate methods facilitate the use of regression type (interpolation, machine learning) models for spatial prediction, including with satellite remote sensing data. Processing of very large files is supported. See the manual and tutorials on to get started. 'terra' replaces the 'raster' package ('terra' can do more, and it is faster and easier to use).

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Version

Install

install.packages('terra')

Monthly Downloads

172,117

Version

1.8-21

License

GPL (>= 3)

Homepage

https://rspatial.org/

Maintainer

Robert Hijmans

Last Published

February 10th, 2025

Functions in terra (1.8-21)

Compare two SpatRasters for equality

Apply a function to the cells of a SpatRaster

Animate a SpatRaster

Conversion to a SpatVector of lines

Align a SpatExtent

Create a text representation of (the skeleton of) an object

Estimate values for cell values that are NA by interpolating between layers

SpatRaster or SpatVector to data.frame

Conversion to a SpatVector of polygons

Aggregate raster or vector data

Bar plot of a SpatRaster

autocorrelation

Spatial autocorrelation

Coerce a Spat* object to a list

Two argument arc-tangent

Detect boundaries (edges)

Coerce to a "raster" object

clamp time series data

Box plot of SpatRaster data

Create a buffer around vector geometries or raster patches

Conversion to a SpatVector of points

Get cell numbers

Combine SpatRaster or SpatVector objects

Compare geometries

Compare-methods

Compare and logical methods

Concatenate categorical rasters

Factors to numeric

tighten SpatRaster or SpatRasterDataset objects

Coercion to vector, matrix or array

Classify (or reclassify) cell values

Convex, concave, rectangular and circular hulls

Cut out a geographic subset

Query by clicking on a map

Replace values with values from another object

Get the coordinates of SpatVector geometries or SpatRaster cells

Area covered by each raster cell

depth of SpatRaster layers

Lagged differences

Subdivide a raster or polygons

Dimensions of a SpatRaster or SpatVector and related objects

Get or set a coordinate reference system

Geographic distance

Add additional nodes to lines or polygons

Data type of a SpatRaster or SpatVector

Combine geometries

Erase parts of a SpatVector object

Get the expanse (area) of individual polygons or for all (summed) raster cells

flowAccumulation

Flow accumulation

extract values along lines

Extract values for a range of layers from a SpatRaster

Get focal values

Focal regression

Disaggregate raster cells or vector geometries

Extract values from a SpatRaster

Draw a polygon, line, extent, or points

Make a dot-density map

Three-dimensional focal values

Find gaps between polygons

ifelse for SpatRasters

GDAL version, supported file formats, and cache size

Compute focal values with an iterating C++ function

Create, get or set a SpatExtent

Spatial interpolation

Fill time gaps in a SpatRaster

deprecated methods

Categorical rasters

add a grid to a map made with terra

Distance on a grid

Flip or reverse a raster

SpatRaster image method

global statistics

Apply a function to layers of a SpatRaster, or sub-datasets of a SpatRasterDataset

Focal weights matrix

Create a graticule

Check for rotation

Interpolate points using a moving window

Nearest neighbor interpolation

Check or fix polygon or extent validity

Remove holes from polygons

Impose the geometry of a SpatRaster to those in a SpatRasterCollection.

Focal function across two layers

Make tiles or get their extents

Get the geometry (coordinates) of a SpatVector

Mask values in a SpatRaster or SpatVector

Initialize a SpatRaster with values

Geometry type of a SpatVector

Value matching for SpatRasters

Add halo-ed text to a plot

Pairs plot (matrix of scatterplots)

SpatRaster PCA with prcomp

force counter-clockwise polygons

Make an inset map

Change values in-place

head and tail of a SpatRaster or SpatVector

Get or compute the minimum and maximum cell values

Spatial model predictions

Make a VRT header file

merge SpatRasters by timelines to create a single timeseries

Merge SpatRasters, or merge a SpatVector with a data.frame

Create a SpatRaster

mosaic SpatRasters

Find and remove geometries that are NA

Frequency table

Raster value types

Rasterize vector data

Plot a SpatExtent

Plot a graticule

Set or get metadata

Check if a SpatExtent or SpatVector is empty

Correlation and (weighted) covariance

Compare two SpatRasters for equality

Combine row, column, and layer numbers

Check for rotation

Check for longitude/latitude crs

Detect patches (clumps) of cells

add a custom legend

Names of Spat* objects

nearby geometries

Pit Finder in a Flow Dir SpatRaster for Watershed Extraction

Get the coordinates of the extent of a map

Plot with leaflet

Fill layers with a range

Read from, or write to, file

Create a SpatRasterDataset

Linear units of the coordinate reference system

color palettes for mapping

SpatRaster PCA with princomp

Add points, lines, or polygons to a map

Change the coordinate reference system

General mathematical methods

Rasterize geometric properties of vector data

Rasterize points with a moving window

Sort a SpatRaster or SpatVector

Number of segments

Spatial relationships between geometries

Replace values of a SpatRaster

Rotate data along longitude

Data sources of a SpatRaster

spin a SpatVector

row/col sums and means for SpatRaster

Memory available and needed

Set the values of raster cells or of geometry attributes

Perimeter or length

Replicate layers

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

Spatial selection

select cells with high or low values

Split a SpatRaster or SpatVector

Create a SpatRasterCollection

normalize.longitude

normalize vector data that crosses the dateline

Create a SpatVectorCollection

Rolling (moving) functions

Symmetrical difference

Scale values linearly

Perspective plot

Select the values of a range of layers, as specified by cell values in another SpatRaster

Subset a SpatRaster or a SpatVector

Quantiles of spatial data

Extract values from a SpatRaster, SpatVector or SpatExtent

saveRDS and serialize for SpatVector and SpatRaster*

Red-Green-Blue plot of a multi-layered SpatRaster

terrain characteristics

Query a SpatVectorProxy object

Replace with $<-

Trim a SpatRaster

Apply a function to subsets of layers of a SpatRaster

Replace layers or variables

Rectify a SpatRaster

Add labels to a map

Scatterplot of two SpatRaster layers

Catchment delineation

units of SpatRaster or SpatRasterDataSet

Description of the methods in the terra package

Compute a viewshed

Change values in a file

Cell level regression

Cell values and geometry attributes

variable and long variable names

Zonal statistics

Zoom in on a map

Compare coordinate reference systems

Voronoi diagram and Delaunay triangles

Weighted mean of layers

SpatVector geometric properties

Write SpatVector data to a file

Apply a function to the cells of a two SpatRasters

Take a regular sample

Apply a terra function that takes only a single layer and returns a SpatRaster to all layers of a SpatRaster

Union SpatVector or SpatExtent objects

Get or set single values of an extent

Scale (gain) and offset

Create SpatVector objects

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

List or remove layers from a vector file

Where are the cells with the min or max values?

Subset a SpatRaster or a SpatVector

Subset a SpatRaster or a SpatVector

simplifyGeom geometries

Which cells are TRUE?

time of SpatRaster layers

replace cell values

Temporary files

wrap and unwrap

SpatRaster wrap with caching options

Compute surface area from elevation data

Read all cell values into memory

Vector topology methods

Virtual Raster Dataset

filenames of VRT tiles

Write raster data to a NetCDF file

Write raster data to a file

Set the NA flag

Adjacent cells or polygons

Add (in place) a SpatRaster to another SpatRaster or to a SpatRasterDataset or SpatRasterCollection

SpatExtent-class

Class "SpatExtent"

Number of immediate adjacent cells flowing into each cell

Layers representing colors

Active category

SpatRaster-class

SpatRaster class

SpatVector-class

Class "SpatVector"