similar to: grid packages since R-1.7.1

Why, in R, does (0.1 + 0.05) > 0.15 evaluate to True? What am I missing here? How can I ensure this (ostensibly incorrect) behavior doesn't introduce bugs into my code? Thanks for your time. Dave Mitchell [[alternative HTML version deleted]]

Hello. I am trying to invert a matrix, and I am finding that I can get different answers depending on whether I set LAPACK true or false using "qr". I had understood that LAPACK is, in general more robust and faster than LINPACK, so I am confused as to why I am getting what seems to be invalid answers. The matrix is ostensibly the Hessian for a function I am optimizing. I want to get

(another in an ongoing list of things i just want to clarify for the sake of future courses taught on centos.) from this RHEL doc page: http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Deployment_Guide/s1-openssh-server-config.html the reader is advised to, for the sake of security, remove/disable vsftpd, ostensibly in favour of sftp/sftp-server. really? i can obviously

Folks, I fully understand the emotional need to respond to one who throws around terms like "Communist", "Tyrannical", etc. even if ostensibly framed as a rhetorical question. Certain terms and phrases are by nature pejorative and I;m sure the OP knew this when he entered his post. My feeling was the OP is either an ignorant, unappreciative, self-centered, and emotionally

What is the recommended way to change the default set of packages that are loaded at startup by R for Windows? I am writing vignettes for the Devore6 package which my introductory engineering statistics students will use and I would like to describe how the R environment can be changed so that this package is loaded by default. I understand from the R for Windows FAQ that one way would be to

Am just feeling my way into the grid library, and cannot figure out how to define the plot limits. 3/5 of the example polygons below plot in the default 0-1 range viewport. But when I try to redefine the viewport the polygons plot in the same places. I also get the same result without employing push/pop. (As you can see from the scale I'm trying to introduce, I want to plot map polygons.)

Hi, I wonder whether there is a way to generate a polygon (a triangle in my case) with color gradient using grid.polygon() in package grid? I tried something like library(grid) grid.polygon(x=c(0, 0.5, 1), y=c(0.5, 1, 0.5), gp=gpar(col=NA, fill=colorRampPalette(c("green", "lightgray"), space="Lab")(200))) But am only

Hi, I'm trying to use grid.polygon() to plot several polygons at once, with a view to putting coloured polygons beneath a curve. I'm struggling just to get the grid.polygon to plot anything # PLOT SOME POINTS x <- 1:100 y <- 1:100*0.5 + 3 plot(x, y, pch = ".") # PLOT 2 POLYGONS library(grid) grid.polygon(x = c(20, 20, 40, 40, 40, 40, 60, 60), y =

Did anyone else who purchased the Rails betabook get a telephone call from someone at "Humboldt Merchants" (sp?) asking to verify their purchase, ostensibly to ensure there was no fraud (on the part of the merchant, not the person buying the book)? They knew my name, phone number, the title of the book I bought and the type of credit card I used. They didn''t give or ask for the

Dear all r-users,   I have this code below to draw two squares, small and big square.  I would like to colour the small square with red and the big square with blue for example.  I tried using polygon but fail.  Thank you so much for your help.     par(mar=c(4,4,2,1.2),oma=c(0,0,0,0),xaxs="i", yaxs="i") plot.new() plot.window(xlim= c(0,8),

I've been able to do most things I'd like to using the map package, but I can't figure out how to fill a region without drawing a black outline. I can draw the outline in a specified colour, but as soon as I set fill to TRUE, I get a black outline in addition. My map has a lot of activity on the coastline so I don't want a black line obscuring what I do there. A pale colour to

Dear list, Following a recent enquiry, I've been playing with the idea of creating a colour gradient for a polygon, using the Grid package. The idea is to draw a number of stripes of different colours, using the grid.clip function. Below is my current attempt at this, library(grid) rotate.polygon <- function(g, angle=0){ # utility function, works fine matR <- matrix(c(cos(angle),

Hello, I am developing an agent-based model to simulate the spread of infectious diseases in heterogeneous landscapes composed of habitat polygons (or clumps of connected cells). To simplify the model, I consider a habitat grid (or raster) containing the polygon ID of each cell. In addition, I have epidemiological parameters associated with each polygon ID. At each time step, the parameter values

Hello again, test setup as in previous messages. With fts = lucene, I enabled the adapted decode2text.sh (at least I tried...) as suggested in the comment section. On dovecot-start /var/run/dovecot/decode2text socket is created with sufficiant permissions (rw for anybody), but decode2text.sh is not started (it's rx for anybody). When creating lucene indexes, I cannot see it executed either

On Feb 29, 2008, at 6:10 AM, Daniel Ruoso wrote: > Then I got the idea of generating an API description file from the > public header files of the library Sounds neat. In the past I've done this with objdump for the public symbols in a library. In theory you don't care about types no findable by the api. A nice tool would allow one to stamp the interface as release time,

I've to project and build a fresh new box with * on. Basically, i'll have this situation: The office is connected to the phone carrier with a PRI. I need to let users continue to use their analog phones in a office, and an IP-phone based solution on the remote office, that will call using outside using the PRI on the first one. PRI---> Asterisk ---> Analog phones |

Hi, all. I'm thinking of provisioning my (non-PRI) T1 to be part data, part voice (currently, it's only voice). With the T100P, how do I get it to "do" data? Just load up the HDLC module, and it gets an IP address? Or...? I tried RTFM'ing, but there just doesn't seem to be much on it (leastwise, that's readily findable). Thanks much, Ken D'Ambrosio

In putting together the SoundPack code, I am looking at the various language/locale specific code, and wondering how it all really stands... So, share with me, non-English speakers, what is your experience and impression? I heard a few comments during AstriDevCon, that some of the languages are not quite right; some said their language was understandable, but... Would anyone be willing to share

Hi, I have an array of 2d node locations and an array triangles, and would like to plot something like a image or persp. An example of doing it with rgl is: library(ncdf) library(rgl) # wget http://www.maplepark.com/~drf5n/extras/teapot.nc teapot<-open.ncdf("teapot.nc") z<-get.var.ncdf(teapot,"tris") l<-get.var.ncdf(teapot,"locations")

I was about to post a bug concerning this, but I thought I'd check with you folks first. The symptom is a SIGSEGV in my program in the standard library template for red black trees (bits/stl_tree.h). The crash occurs as the result of an LLVM Module method, getConstantPointerRef which looks like: // Accessor for the underlying GlobalValRefMap... ConstantPointerRef