| root.hist2D {xps} | R Documentation |
Creates a ROOT 2D-histogram for a ROOT tree.
root.hist2D(x, treename1 = character(0), treename2 = character(0),logbase = "log2", option = "COLZ", canvasname = "Histogram2D", save.as = "", w = 540, h = 540)
x |
object of class DataTreeSet or ExprTreeSet. |
treename1 |
name of first tree, must be present in rootfile of object x. |
treename2 |
name of second tree, must be present in rootfile of object x. |
logbase |
usually “log2”, or “0”, determines if leaf data should be converted to log. |
option |
ROOT hist TH2 option, usually one of “SCAT”, “COLZ”, “BOX”, “SURF2”, “SURF3”. |
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 canvas in pixels. |
h |
the height of the canvas in pixels. |
Creates a ROOT 2D-histogram for trees treename1 and treename2 present in rootfile.
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.
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”.
Christian Stratowa
## 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.hist2D(data.test3, "TestA1.cel", "TestB1.cel", option="COLZ")
## End(Not run)