root.image: ROOT Image

Description Usage Arguments Details Note Author(s) See Also Examples

Description

Creates a ROOT image for a ROOT tree.

Usage

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root.image(x, treename = character(0), leafname = "fInten", logbase = "log2", option = "COLZ", zlim = NULL, canvasname = "Image", save.as = "", w = 540, h = 540)

Arguments

x

object of class DataTreeSet.

treename

name of tree, must be present in rootfile of object x.

leafname

leaf name of tree, usual “fInten” or “fBg”.

logbase

usually “log2”, or “0”, determines if leaf data should be converted to log.

option

ROOT graph option, usually. one of “COL”, “COLZ”.

zlim

size limits c(min,max) of leafname.

canvasname

name of ROOT canvas

save.as

graphics type for saving canvas, one of “ps”, “eps”, “pdf”, “jpg”, “gif”, “png”, “tiff”

w

the width of the device in pixels.

h

the height of the device in pixels.

Details

Creates a ROOT image for tree treename present in rootfile.

To zoom-in move the mouse cursor to the x-axis (y-axis) until it changes to a hand and click-drag to select an axis-range. To unzoom move the mouse cursor to the x-axis (y-axis) until it changes to a hand and right-click to select “Unzoom”.

By selecting menu “File->Save->canvasname.xxx” you can save the figure as e.g. *gif, *.jpg, *.pdf, *.ps or even as C++ macro.

Alternatively, you can save the plot by setting save.as. However, this will close the canvas immediately after opening it.

Note

Always select menu item “Quit ROOT” from menu “File” to close the ROOT canvas, otherwise you are in the CINT C/C++ interpreter from ROOT. To exit CINT, you need to type “.q”.

Author(s)

Christian Stratowa

See Also

image-methods, image

Examples

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## Not run: 
## first, load ROOT scheme file and ROOT data file
scheme.test3 <- root.scheme(paste(path.package("xps"),"schemes/SchemeTest3.root",sep="/"))
data.test3 <- root.data(scheme.test3, paste(path.package("xps"),"rootdata/DataTest3_cel.root",sep="/"))

root.image(data.test3, "TestA1.cel")
root.image(data.test3, "TestA1.cel", save.as="png")

## End(Not run)

xps documentation built on May 2, 2018, 2:33 a.m.