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Install

install.packages('ursa')

Monthly Downloads

251

Version

3.9.5

License

GPL (>= 2)

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Maintainer

Nikita Platonov

Last Published

January 25th, 2022

Functions in ursa (3.9.5)

ursa-package

Overview
focal_mean

Low-pass spatial filter for image.
focal_special

Custom spatial filtering for image
local_group

Create single-band raster using statistics of multi-bands raster.
focal_median

Median spatial filter for image
band_stat

Computes statistics for each band of raster.
band_group

Extract certain statistics of each band.
focal_extrem

Extremal spatial filter for image
local_stat

Bundle of statistics, which is applied to each cell of multi-band image.
global operator

Extract certains statistics for whole image
Extract

Extract portion of raster images
chunk

Get indices for partial image reading/writing
nband

Get number of bands of raster image.
as.table

Frequency of unique values
as.raster

Export raster object to a colored representation.
is.na

‘No data’ values for raster images.
head

Extract first and last bands of raster image
hist

Histogram of raster image
as.integer

Transform values to type integer
as.matrix

Convert raster image to a matrix
ursaRaster

Definition of ursaRaster class.
Replace

assign values to the portion of raster images
colortable

Color Tables of raster images.
compose_close

Finish plotting
ursaConnection

Connection of raster objects.
close

Close connections for files with data
compose_legend

Plot colorbars or marginal texts.
as.array

Export raster object to multidimensional array
as.data.frame

Convert raster image to a data frame
c

Combine bands into raster brick.
ursaGrid

Spatial parameters of raster images.
write_gdal

Write raster image to GDAL file(s)
zonal_stat

Zonal statistics for raster maps
compose_design

Organize multi-panel layout with images and color bars.
groupGeneric

Group Generic Functions for raster image
plot

Simple display of raster images
legend_align

Align caption position for legend
cubehelix

Generate "cubehelix" palette.
summary

Summary of raster image.
compose_open

Start displaying
seq

Sequence Generation for raster image and coordinate grid
get_earthdata

Retrive data from Global Imagery Browse Services (GIBS) using API for Developers
commonGeneric

Some generic functions for ursaRaster class.
allocate

Rasterization of point data into grid cells
dim

Dimension of multiband raster image
glance

Command line utility for spatial view of raster or vector GIS file.
read_envi

Read ENVI .hdr Labelled Raster file to memory
open_gdal

Open GDAL file
legend_mtext

Write marginal text
na.omit

Drop bands which don't have data.
panel_plot

Add graphical elements to the image panel
as.Raster

Coercion to package 'raster' objects
ursaStack

List of raster images.
bandname

Band names for raster image.
legend_colorbar

Plot colorbar
compose_plot

Plot layout of images and color bars.
panel_raster

Add raster to the image panel
compose_panel

Plot raster images and decorations on the multipanel layout.
ursaValue

Values of raster images.
regrid

Change raster image resolution and extent
create_envi

Create ENVI or GDAL files on disk
segmentize

Create segmented line from points' sequence
blank

Does any band contain no information?
ursa_new

Create raster image in memory
ursa_cache

Cache management of ursa package
panel_annotation

Add label or annotation to the image panel.
ursa_crs

Extract and assign projection of raster images.
panel_coastline

Add coastline to the image panel.
ursaProgressBar

Progress bar
reclass

Reclassify specific values of image
open_envi

open_envi file
display_stack

Plot multi-band heterogenous raster images in the PNG format.
read_gdal

Read GDAL supported raster files.
envi_files

ENVI File Manipulation
temporal_interpolate

Fill gaps across bands using moving mean window
ursa_crop

Crop 'no data' margins.
ursa_dummy

Generate raster image for examples.
temporal_mean

Smooth value across bands using moving mean window
panel_new

Start plotting on the new image panel
panel_graticule

Add latitude/longitude or metric grid to the image panel.
rep

Replicate bands of raster image.
display_rgb

Plot RGB (RGBA) color composition in the PNG format.
display_brick

Plot multi-band homogenous raster image in the PNG format.
session

Get and set sessional parameters for grid, CRS, external software for open PNG files.
write_envi

Write raster image to ENVI .hdr Labelled Raster file.
panel_contour

Add colored contour to the image panel
panel_decor

Add auxiliary elements to the plotting panel.
spatial_engine

Wrapper functions for manipulation with non-raster spatial objects
codec

Reduce and restore dimenstions for sparse data matrix
colorize

Create color table
discolor

Destroy color table for raster images.
polygonize

Raster to vector (polygon) conversion.
as.ursa

Create raster image from R objects or GDAL raster files.
ursa

Get and set properties of raster image.
pixelsize

The actual size of each grid cell with considerable distortion in area of map projection.
display

Plot raster image(s) in the PNG format.
identify

Get value and coordinates from location
ignorevalue

Extract and assign ‘nodata’ value of raster images.
panel_scalebar

Add scale bar to the image panel
panel_shading

Shaded overlay by image mask
spatial_read

Wrapper functions for reading spatial objects.
spatial_write

Wrapper functions for writing spatial objects.
ursa_grid

Extract and assign spatial parameters of raster images.
ursa_info

Print metadata for raster image.