DVHmetrics (version 0.4.2)

showDVH: Display dose volume histograms

Description

Displays dose volume histograms: Either one diagram per patient - including multiple structures. Or one diagram per structure - including multiple patients.

Usage

showDVH(x, cumul=TRUE, byPat=TRUE, patID=NULL, structure=NULL,
        rel=TRUE, guessX=TRUE, guessY=TRUE, thresh=1, addMSD=FALSE,
        show=TRUE, visible=FALSE, fixed=TRUE)
# S3 method for DVHs
showDVH(x, cumul=TRUE, byPat=TRUE, patID=NULL, structure=NULL,
        rel=TRUE, guessX=TRUE, guessY=TRUE, thresh=1, addMSD=FALSE,
        show=TRUE, visible=FALSE, fixed=TRUE)
# S3 method for DVHLst
showDVH(x, cumul=TRUE, byPat=TRUE, patID=NULL, structure=NULL,
        rel=TRUE, guessX=TRUE, guessY=TRUE, thresh=1, addMSD=FALSE,
        show=TRUE, visible=FALSE, fixed=TRUE)
# S3 method for DVHLstLst
showDVH(x, cumul=TRUE, byPat=TRUE, patID=NULL, structure=NULL,
        rel=TRUE, guessX=TRUE, guessY=TRUE, thresh=1, addMSD=FALSE,
        show=TRUE, visible=FALSE, fixed=TRUE)

Arguments

x

A single DVH (object of class DVHs), multiple DVHs from one patient/structure (object of class DVHLst), or multiple DVHs from many patients/structures (object of class DVHLstLst). See readDVH. See Details.

cumul

logical. Show cumulative or differential (per unit dose) DVH?

byPat

logical. Relevant if multiple DVHs are given. If x has class DVHLstLst: byPat=TRUE means that one diagram shows DVHs from one patient with multiple structures. byPat=FALSE means that one diagram shows DVHs for one structure from multiple patients.

patID

character vector. Show diagram for these patients only. If missing, all patients are shown. Can be a regular expression with fixed=FALSE, see regex.

structure

character vector. Show diagram for these structures only. If missing, all structures are shown. Can be a regular expression with fixed=FALSE, see regex.

rel

logical. Show relative volume?

guessX

logical. Try to guess the best x-axis limits for better visibility of main DVH range? If FALSE, x-axis runs from 0 to maximum dose. If TRUE, x-axis runs from 0 to dose value where volume approaches 0. If a single number is given, it is interpreted as the maximum value. If a vector of two numbers is given, it is interpreted as the range of the axis.

guessY

logical. Try to guess the best y-axis limits? If a single number is given, it is interpreted as the maximum value. If a vector of two numbers is given, it is interpreted as the range of the axis.

thresh

numeric value. Relative volume threshold used with guessX=TRUE. Clip x-axis (+5%) such that the "highest" DVH is cut off at this relative volume.

addMSD

logical. If TRUE, diagram shows the point-wise mean DVH as well as shaded areas for point-wise 1-standard deviation and 2-standard deviations around this mean. See details.

show

logical. If TRUE, diagrams are shown, if FALSE diagrams are not shown - only ggplot diagram objects are silently returned.

visible

logical. Return ggplot diagram object visibly or invisibly. show=FALSE with visible=TRUE is useful for zooming in shiny apps.

fixed

logical. Use fixed=FALSE for regular expression matching of patID and structure.

Value

Silently returns a ggplot diagram object, or - when multiple diagrams are constructed - a list of ggplot diagram objects.

Details

If multiple diagrams are produced, they are shown in the same graphics device. If interactive inspection is required, make sure you use an R development environment that saves previous diagrams and allows navigating between them - e.g., RStudio or OpenAnalytics Architect.

For addMSD=TRUE, the number of DVH nodes (dose values) is reduced by 1/3 of the maximum number of nodes in x. Before calculating the point-wise mean and SD, DVHs in x are first linearly interpolated using the same set of nodes.

See Also

ggplot, readDVH, saveDVH, getMeanDVH

Examples

# NOT RUN {
showDVH(dataMZ, byPat=TRUE, structure=c("HEART", "AMYOCL"))

# matches patients P123 and P234
showDVH(dataMZ, byPat=FALSE, patID="23", fixed=FALSE)
# }