On 20-Oct-03 Pingping Zheng wrote: > Hello all, > > Would anybody tell me how to present spatial-temoral point processes in > R, for example, I'd like to plot the spatial points in the sequence of > their time domain?
Perhaps you need a "movie"? You can use different colours to show the progression of values at the spatial points as well. This should be possible without cruel and unusual effort using a 'for' loop and 'plot' with axes pre-set. The main thing you need to tune is the delay between frames, so that you create the desired impression. (I've done this sort of thing, once on a CP/M machine to display the progress of Johs. Schmidt's Atlantic eel investigations, once using matlab on DOS to show earthquake patterns, with magnitudes, evolving over time). By the way, Postscript being a nice programming language, it is possible to create a "movie" in a single PS file. The only thing I've not found built-in to PS is a 'delay' or 'sleep' function. In PDF, if you are able to include PDFmarks, you can be even fancier, since there is a PDFmark which causes successive images to merge smoothly into each other. The ImageMagick suite of programs includes 'animate' which allows you to display a "movie" based on a sequence of separate image files. You might consider have each succesive image also containing "ghosts" (with succesively increasing ghostliness) of the last few, say 2 or 3, images. Best wishes, Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <[EMAIL PROTECTED]> Fax-to-email: +44 (0)870 167 1972 Date: 20-Oct-03 Time: 16:09:56 ------------------------------ XFMail ------------------------------ ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
