Echogram: Echogram

In leachth/ReadEKRaw_updated:

Description

creates an echogram with a scale bar

Usage

Echogram(data, nf = 1, use.bottom.line = TRUE, bottom.line.offset = 1,
  threshold = -30, x = seq(1, length(data$pings), by = 1),
  y = data$pings[[2]]$rangeCorrected, ylim = rev(c(0, max(data$bottom.line +
  bottom.line.offset))), zstart = -70, zend = -30, xlim = range(x, finite
  = TRUE), zlim = c(zstart, zend), filename, height = 5, width = 7,
  ppi = 300, nlevels = 15, levels = pretty(zlim, nlevels),
  plot.title = "", key.title = "Sv", xlab = " Index", asp = NA,
  xaxs = "i", yaxs = "i", las = 1)

Arguments

data	object from ConvertPower or FindBottom
nf	nearfield distance, offset below surface in meters to be excluded from plot; default is 1
use.bottom.line	default is TRUE, when set to default only backscatter from the bottom line offset to the nf range are plotted.
bottom.line.offset	value to specify depth offset in meters below (positive values) or above (negative values) the bottom line that are to be plotted; default is 1 m.
threshold	data with backscatter (dB) stronger than this value are excluded. Use this to remove possible scatter from fish; default is -30 dB.
x	vector of values to be used for the x-axis. Must be the same length as number of pings; default is a vector 1:length(pings).
y	vector of depth intervals form sample data; default is data$pings[[2]]$rangeCorrected. THIS SHOULD NOT BE CHANGED.
ylim	range of y values; default is rev(c(0, max(data$bottom.line + bottom.line.offset))), THIS SHOUKD NOT BE CHANGED.
zstart	lowest value of z (backscatter); default is -70 dB
zend	highest value of z (backscatter); default is -30 dB
xlim	range of x values; default is range(x, finite=TRUE). THIS SHOULD NOT BE CHANGED.
zlim	range of z values base on zstart and zend, THIS SHOULD NOT BE CHANGED.
filename	file name in the form “filename.png”; must be specified so the file can be written
height	value in inches that specifies the height of the image; default is 5
width	value in inches that specifies the width of the image; default is 7
ppi	resolution of image; default is 300, make smaller for smaller image files
nlevels	number of levels for color scale; default is 15
levels	pretty separations for colors of z and scale bare. THIS SHOULD NOT BE CHANGED
plot.title	character vector in quotes to label plot; default is “”
key.title	character vector in quotes of title of color key; default is “Sv"
xlab	character vector in quotes of title of color key; default is “Index"
asp	aspect ratio y/x, default NA. See plot.window for more information.
xaxs	x axis interval calculation style. Default "i", see par for more information.
yaxs	x axis interval calculation style. Default "i", see par for more information.
las	axis label style. See par

Examples

Echogram.pixel(data, filename = "RPpixelfunction.png",plot.title = "Rock Pond", threshold = -45, use.bottom.line = TRUE)

leachth/ReadEKRaw_updated documentation built on May 23, 2019, 9:02 p.m.