High-level function to create multi-panel layout of images and to display with decoration (gridlines, coastlines, scalebar, colorbars) in the PNG format. It is an aggregator of low-level functions for typical plotting.
display(obj, ...)Returned value from either display_brick or display_stack or display_rgb functions.
Object of class ursaRaster or list of ursaRaster objects.
Passed to either display_brick or display_stack or display_rgb functions and further to hierarchy of plotting functions:
compose_open
compose_design
compose_plot
panel_new
panel_raster
panel_decor
panel_graticule
panel_coastline
panel_scalebar
panel_annotation
compose_legend
compose_close
Nikita Platonov platonov@sevin.ru
If argument obj is missing (e.g, calling display() without parameters) then plotting the sessional CRS with blank image.
If argument obj is list of ursaRaster objects (or object of class ursaStack) then display_stack is called.
If argument obj is object of class ursaRaster and has 3 or 4 bands and values in each band are integer and in interval between 0 and 255, then display_rgb is called.
If argument obj is object of class ursaRaster then firstly internal test is applied to detect either image's bands contains homogeneous information (raster brick) or heterogeneous information (raster stack). Then either display_brick or display_stack is called. This test is rough due to unknown data origin. It is supposed to adjust kind of plotting by means of direct specification of display_brick or display_stack.
display_brick, display_stack, display_rgb
R-styled plotting: plot, image
session_grid(NULL)
set.seed(500)
a.brick <- a.stack <- ursa_dummy(nband=3,min=0,max=255,mul=1/16)
a.stack[2] <- a.stack[2]/10
a.stack[3] <- sqrt(a.stack[3])
a.rgb <- as.integer(round(a.brick))
print(a.brick)
print(a.stack)
print(a.rgb)
display(a.brick,decor=FALSE)
display(a.stack,decor=FALSE)
display(a.rgb)
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