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

In ursa: Non-Interactive Spatial Tools for Raster Processing and Visualization

Description

Raster images are forced to be interpeted as heterogenuous (having the different units). It implies creating multi-panel layout with multiple colorbars.

Usage

display_stack(obj, ...)
display_hetero(obj, ...)

Arguments

obj	Object of class ursaRaster or list of ursaRaster objects.
...	Passed to hierarchy of plotting functions: compose_open compose_design compose_plot compose_panel panel_new panel_raster panel_decor panel_graticule panel_coastline panel_scalebar panel_annotation compose_legend legend_colorbar compose_close

Details

If argument obj is object of class ursaRaster then obj is coerced to list of ursaRaster objects ('brick' is coerced to 'stack').

The plot layout is either two-columns or two-rows. Extent of coordinate grid has a form of rectangle. The layout selection depends on ratio of rectangle's sides. For single-column design use parameter layout=c(NA,1L). e.g., display_brick(a,layout=c(NA,1)), for single-row design use parameter layout=c(1,NA). The same is for forcing of two-columns (layout=c(NA,2L)) and two-rows layouts (layout=c(2L,NA)). Other layouts are not applicable for multiple colorbars.

display_hetero is a synonyn to display_stack. It is introduced to emphasize the plotting of complex object with heterogeneous elements, for example, having different units.

Value

Function returns NULL value.

Author(s)

Nikita Platonov [e-mail]

See Also

display, display_brick, display_rgb

Examples

session_grid(NULL)
a <- ursa_dummy(nband=3)
display_stack(a)

ursa documentation built on Feb. 26, 2020, 3:01 p.m.