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----- Forwarded message from Telford Tendys <telford@triode.net.au> ----- Delivery-Date: Thu Jan 25 22:22:57 2001 Date: Fri, 26 Jan 2001 16:26:27 +1100 From: Telford Tendys <telford@triode.net.au> To: feedback@vorbis.com Subject: Comments on your code User-Agent: Mutt/1.2.5i Dear Vorbis, I didn't even know about ogg or vorbis until I was at a conference and someone said, ``if

I realise that there is an existing system for documenting datasets but what I would like is to be able to whack a few lines of commentary at the top of a file which contains data -- not full documentation but just an outline for myself to remind me of what I was doing or what settings I was using, etc. I was thinking that the read.table() function might be extended to support an option allowing

None of this is greatly important but might be a bit useful to someone. BTW, I have 0.99a installed, it compiled without a problem. I've discovered most of the plotting facilities including the legend() function and the various text annotations, this is nice an convenient and flexible enough to do most things. One thing that I must say is that the help pages on plot() and plot.default()

For a long time now I've been using a function: classed <- function (x, cls) { class(x) <- cls x } as a utility at the end other functions to set the class of an object and return the object. I've noticed examples where others have been doing a similar thing and I think it would be a useful addition to R base (unless there is already something there to do this - it

I would like to know if a MetaPost device is available or in the plans. A search MetaPost in the documents and list archives did not turn up anything. [I would prefer to use MetaPost when the graphics is to be included in a document that I want in both hard-copy and in pdf formats.] If not, how easy/hard is it to add a new device to R? I caouln't see anything about adding devices in the

I would like to know if a MetaPost device is available or in the plans. A search MetaPost in the documents and list archives did not turn up anything. [I would prefer to use MetaPost when the graphics is to be included in a document that I want in both hard-copy and in pdf formats.] If not, how easy/hard is it to add a new device to R? I caouln't see anything about adding devices in the

I'm a bit confused about the nls package, I'm trying to use it for curve fitting. First off, the documentation for nls says ``see `nlsControl' for the names of the settable control values'' -- this is wrong, it should be nls.control (minor point but had me confused for a moment). Now I'll try something very simple (maybe too simple):

OK, here is some code that may be of use to someone: http://www.progsoc.uts.edu.au/~telford/samples/R/gafit_0.1.tar.gz Hopefully it might make contrib status on CRAN :-) It uses a genetic algorithm to seek the lowest value of some user-defined target function (or seeks the most negative value if negative values are possible). By using a sum of squared residuals for the target function, it

I get a segfault from: R> plot( x, y, log="does this work?" ) [telford@faraday ring-core]$ R --version Version 0.64.2 (July 3, 1999) Copyright (C) 1999 R Development Core Team R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under the terms of the GNU General Public License. For more information about these matters, see

I'm a scheme and C user generally, I'm a bit wary of the large FORTRAN content of the R language but aside from that issue it seems nice and simple and easy to use. What I want to do is find some GPL software to replace gnuplot, and since R does all the calculating stuff that gnuplot does (probably R is faster though I haven't tested) plus R has quite decent plotting capabilities I