dot-predPointsPix: Predict and return pixel location of points of current plot

In wrGraph: Graphics in the Context of Analyzing High-Throughput Data

Predict and return pixel location of points of current plot

Description

This function allows predicting the pixel location of points of current plot. Note: may be imprecise in case of x or y with all same values.

Usage

.predPointsPix(
  x,
  y,
  dimPng,
  res,
  marg,
  fromTop = TRUE,
  scExt = 0.04,
  displ = FALSE,
  callFrom = NULL,
  silent = FALSE,
  debug = FALSE
)

Arguments

x	(numeric) initial coordinates for plot
y	(numeric) initial coordinates for plot
dimPng	(numeric, length=2) width and hight of png
res	(numeric, length=1) resultion of png
marg	(numeric, length=4) margins in inches (as given by par(mar=c(...)))
fromTop	(logical) default counting in html is from top
scExt	(numeric, length=1) extending scale (default at 0.04 ie 4 %)
displ	(logical) optional plot
callFrom	(character) allows easier tracking of messages produced
silent	(logical) suppress messages
debug	(logical) additonal messages for debugging

Value

This function returns a numeric matrix with 2 columns 'xPix' and 'yPix' (with length(x) rows); and optionally a plot (if argument displ=TRUE)

See Also

convertPlotCoordPix, mouseOverHtmlFile

Examples

.predPointsPix(x=c(1,100), y=c(1,100), dimPng=c(700,600), res=200, marg=c(5,4,4,2))

wrGraph documentation built on Oct. 20, 2023, 5:08 p.m.