nmHistogram: NONMEM data histogram
In MangoTheCat/RNMGraphics: NONMEM graphics

Description Usage Arguments Value Author(s) Examples

creates histograms of one or more NONMEM variables

nmHistogram(obj, vars, bVars = NULL, iVar = "ID", refLine = "none",
  type = "percent", addDensity = FALSE, titles = "", xLabs,
  extraSubset, addGrid = TRUE, nint = 12, breaks, layout = NULL,
  maxPanels = NULL, xRotAngle = 0, maxTLevels = Inf,
  problemNum = 1, subProblems = 1, xAxisScaleRelations = c("same",
  "free", "sliced"), yAxisScaleRelations = c("same", "free", "sliced"),
  ...)

`obj`	The object from which data will be plotted (NMRun, NMProblem or data.frame)
`vars`	Variables from which to generate a histogram (character vector or comma seperate string of names)
`bVars`	"Trellis" variables on which to split data.
`iVar`	Subject identifier variable
`refLine`	Controls addition of a reference line to the histogram(s). Choices are "none", "mean" or "median".
`type`	Determines the style of y-axis that is used for the plot (percentages, frequencies, or proportions)
`addDensity`	Logical flag. Should a density estimate be plotted? Only relevant for type = "density"
`titles`	Plot title
`xLabs`	x axis label
`extraSubset`	Currently unused
`addGrid`	Currently unused
`nint`	Number of intervals for the creation of X axis bars. It functions identically to the nint parameter of the histogram function from the lattice package
`breaks`	Control the calculation of breakpoints for the histogram. It functions identically to the breaks parameter of the histogram function from the lattice package.
`layout`	A length 2 vector which is passed in as the layout parameter to xyplot
`maxPanels`	Maximum number of panels that should appear on each page of a graph.
`xRotAngle`	Angle by which to rotate the x-axis tick marks
`maxTLevels`	f a single numeric (or string), the maximum number of levels that a "by" variable can have before it is binned. If a character vector or a vector of length greater than one, the explicit breakpoints.
`problemNum`	Number of the problem (applicable to NMRun class only)
`subProblems`	Number of the simulation subproblems to use (applicable to the NMSim* classes obly)
`xAxisScaleRelations`	X-axis scale relations when panels are displayed. One of `"same"`, `"free"` or `"sliced"`.
`yAxisScaleRelations`	Y-axis scale relations when panels are displayed. One of `"same"`, `"free"` or `"sliced"`.
`...`	Additional parameters passed to histogram

An object of class multiTrellis

Mango Solutions

## Not run:  
 Theoph.df <- as.data.frame(Theoph)
 nmHistogram(Theoph.df, vars = "conc", 
   title = "Theophiline concentration histogram", type = "density") 

## End(Not run)

test_data <- data.frame(X = 1:20, Y = 1:20, Z = c(1:10, seq(from = 11, to = 12, length.out = 10)),
W = 20:1, G = rep(LETTERS[1:2], 10),
B = rep(letters[1:2], each = 10))
nmHistogram(test_data, vars = "X, Z", bVar = "B", xLabs = "HELLO", titles = "TITLE")