| root.image {xps} | R Documentation |
Creates a ROOT image for a ROOT tree.
root.image(x, treename = character(0), leafname = "fInten", logbase = "log2", option = "COLZ", zlim = NULL, canvasname = "Image", save.as = "", w = 540, h = 540)
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 |
gaphics tye 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. |
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.
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.image(data.test3, "TestA1.cel")
root.image(data.test3, "TestA1.cel", save.as="png")
## End(Not run)