search for: xdrawlines

...ything if any of the coordinates was outside the allowed range (would one have to add a per-driver piece of information giving the min and max vals?). I wrote a prototype of some clipping code in R that I could translate to C and stick into src/unix/devX11.c right before every call to XDrawLine or XDrawLines. Before I go to that trouble, though: is there a better way to do this? Is there already clipping code lying around somewhere else in R? Is there a way to do this generically (perhaps by adding an outer clipping region to every device at its device-coordinate limits) that would centralize the c...

Hi I have an application that uses the Xwindows graphics library. Things like XOpenDisplay XDrawLine XCreateSimpleWindow XDrawString and many more Under all the CENTOS 4.X systems these were automatically loaded. I dont have these loaded under my CENTOS 5 system. I get a heap of undefined references when I compile the code. Could someone tell me, point me, where these routines now reside on

The following commands illustrate a problem with graphing relatively large data sets using the "line" option to plot: temp <- runif(200000) # or whatever other numbers you like; # same thing happens with a sine wave plot(1:200000, temp) # everything fine plot(1:200000, temp, type="l") # data gets cut off The number of points isn't crucial. The cutoff point

On some systems (alpha), tick marks don't appear on plots. The easiest way to see the problem is something like: > plot(0:1,axes=FALSE) > axis(1,1:2) The problem is in X11_Line(...) from .../src/unix/devX11.c, which is so short I've included the whole function below: static void X11_Line(double x1, double y1, double x2, double y2, int coords, DevDesc *dd) {

...ld: Unresolved: XLoadQueryFont XOpenDisplay XInternAtom XCreateFontCursor XCreateGC XCreateWindow XDefaultRootWindow XSetWMProtocols XAllocColor XAllocNamedColor XChangeProperty XCheckTypedEvent XClearWindow XCloseDisplay XDefaultDepth XDefaultScreen XDefineCursor XDestroyWindow XDrawArc XDrawLine XDrawLines XDrawRectangle XFillArc XFillPolygon XFillRectangle XFreeColors XFreeCursor XFreeGC XMapWindow XNextEvent XPending XSelectInput XSetClipRectangles XSetDashes XSetFont XSetLineAttributes XSetState XSetWindowBackground XSync XTextWidth XUnloadFont XFindContext XSaveContext XrmUniqueQuark XCreateSimpl...

Some of my students have uncovered some apparent graphics bugs in R. I think they may manifest slightly different on different platforms/ with different display devices (they sometimes report a Windows graph that looks OK but odd results on printing). I'm able to replicate similar problems on my Linux (RH 6.0) system. 1. abline() plots nothing, or a wrong line, when the slope is too

plot(rnorm(100000),type="l") plots only about 7e4 lines while the same without type="l" works fine. Is this a feature or a bug or is this configurable? R : Copyright 2000, The R Development Core Team Version 1.1.1 (August 15, 2000) SunOS 5.5.1 Generic_103640-29 sun4u sparc SUNW,Ultra-1 Thanks Adrian -- Adrian Trapletti, Olsen & Associates Ltd., See- feldstrasse