R Graphical Manual

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Last data update: 2014.03.03

R: Image segments

plotSegments

R Documentation

Image segments

Description

One or several plots of consecutive segments of gray matrix and smoothed grays.

Usage

plotSegments(image, ratio = NULL, marker = NULL, col.marker = "red", 
    tit = TRUE, plot = TRUE, ...)

Arguments

`image`	character or matrix. Either path of an image section or an array representing a gray matrix.
`ratio`	NULL or vector with two values representing the aspect of the plots (height, and width). If NULL the default aspect in `par()` is used.
`marker`	NULL or a number from 1 to 10 as explained in `colNarrow`. If numeric then three kind of markers are indicated: those narrow rings with averages major than `marker`, chronological markers (decades, centuries, and millenia), and the column numbers in gray matrix of the ring borders. The markers are highlighted with the color in `col.marker`. If NULL no markers are highlighted.
`col.marker`	color of the markers.
`tit`	logical or character. A title for the plots. If TRUE the main title is the image name. For more than 1 segment the main title ends with the segment number.
`plot`	logical. If TRUE the image segments are plotted.
`...`	arguments to be passed to `dataSegments`.

Value

the image segments and a list such as that produced by dataSegments.

Author(s)

Wilson Lara, Carlos Sierra, Felipe Bravo

Examples

## (not run) Read one image sample in folder of package measuRing:
image1 <- system.file("P105_a.tif", package="measuRing")        
## column numbers to be included/avoided:
Toinc <- c(196,202,387,1564) 
Toexc <- c(21,130,197,207,1444,1484)        
##(not run) Plotting of five image segments:
plots <- plotSegments(image1,rgb=c(0.5,0,0.5),last.yr=2011,
    marker=8,segs=3,inclu = Toinc,exclu = Toexc)
## plots <- plotSegments(rwidths,segs = 4,marker=8)
## (not run) kill all the image segments:
graphics.off()