Can a simple matrix be used for this or would it be better and more
efficient to create an external database to hold the data. If so,
should the database be created using C and how would I do this (seeing
as that I have never programmed in C)?
You don't want to be down at the C level,
On Wed, 14 Nov 2007, Manal Helal wrote:
Dimn Waves Tot. Parts In Wave Wave NoSerial Index W Order
M
Index DepTot. D1-Serial D1-IndexD1-OrderD1-M
Index D2-Serial D2-IndexD2-OrderD2-M Index
2 7 1 0 1
Something like this - alternating among continents - happens with AoIR,
the Association for Internet Research. A real effort has been made to
make sure that the conference is in North America no more than every other
year, with alternating slots going to Europe and (once so far..) to
Some of the bits and pieces in this look like very strong candidates for
breaking off into CRAN packages, if you haven't done so already.
This looks like very nice work - you should be proud! :-)
--elijah
On Mon, 19 Nov 2007, Karim Chine wrote:
Date: Mon, 19 Nov 2007 19:44:51 +
hi,
You should probably be looking at the functions in the following packages:
sna
network(s)
graph
dynamicgraph
mathgraph
igraph
Matrix
and a few others ;)
what you're describing sounds like, to my ear, a restricted social network
diagram; many of the problems you describe are typical of
I am working with a Fedora Core 6 OS and R 2.5. I have just finished
I am using PVM3.4.5+6-WIN32.tar.gz
Isn't that supposed to be the wad of files for Windows machines?
there's a different link on the PVM homepage to the source for unices...
--elijah
I have looked through all the ROracle documentation, R-help, R-dev,
Googled the world and still cannot figure out this issue. Everything I
read it is about connecting to an Oracle database and pulling data,
processing it, and then pushing it back to Oracle. I am running in
pl/sql code
I have some problems with DBI package, I want to connect to PostgreSQL
database but I don't know the way to do it.
pg - dbDriver(PostgreSQL)
... nope. That won't work.
you need the RdbiPgSQL package from Bioconductor. Along with DBI, as I
recall.
Subject: [R] Cluster Analysis
Dear all,
I would like to know if I can do a hierarchical cluster analysis in R
using my own similarity matrix and how. Thanks. Katia Freire.
Yes. ;)
Reading the help for dist() and hclust() should make the procedure for
doing this appear fairly
Do you have the X11 devel packages installed? You probably do not.
--elijah
On Mon, 29 Oct 2007, Metaxab wrote:
Date: Mon, 29 Oct 2007 05:45:33 -0700 (PDT)
From: Metaxab [EMAIL PROTECTED]
To: r-help@r-project.org
Subject: [R] Cannot install 'rgl'
Hello I have the following
Requires: T = cluster(X): A hierarchical clustering algorithm
L = cut-tree(T; k): produces a partition with k non-singleton clusters
The functions you'll want to read the documentation to, here, are
hclust() and cutree(). They're fairly straightforward and nicely
documented.
It looks like
Hello there,
I am using the igraph package to build graphs from my data. If I plot
a graph though, it's not easy for me to see what's going on. Does
anybody know how to rearrange a graph to get a plot without too many
crossing lines? Maybe other packages?
Edge-crossing minimization
The idea is that you're modeling an irregular shaped object, a body of
water, a river or estuary, say. It's fairly common practice to use a
grid squished and rotated so that the main flow is along one axis, and
the other axis spans the flow in most spots. So there is a single
http://www.broad.mit.edu/~finnyk/Rhome.jpg
If you run Eric Lecoutre's code to produce the graphic, available at
http://www.r-project.org/misc/acpclust.R, unchanged except for the
addition of these lines:
library(Cairo)
Cairo(600,400,file=Rlogo_swiss.png,type=png,bg=white)
then you
So I applied my corrected margins to Tim's Cairo trick and voila:
http://www.broad.mit.edu/~finnyk/Rlogo_swiss.png
This is hands-down the best version, in my opinion!
Yes, it is definitely much nicer than the version on www.r-project.org
now. :-)
--e
I feel like I must be missing something rather plain, but I don't get
it. how is one supposed to use R as a PgSQL client on Windows? Assume
my windows desktop is on the same network as a PgSQL server, and I just
need to use R to connect and pull down some data.
The thing that is
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