similar to: re: Spatial stats: R vs. Splus

A question to all you R-gurus: Can R (or S-plus, for that matter) make efficient use of multiple Intel Processors running under Linux (within the same PC, not over a net)? With the release of the new 2.2 kernel, this would seem a interesting and cost-efficient way of boosting the computational power of Intel/Linux platforms when using R (or S-plus). Thanks for any wise words, Kenneth

A question to all you R-gurus: Can R (or S-plus, for that matter) make efficient use of multiple Intel Processors running under Linux (within the same PC, not over a net)? With the release of the new 2.2 kernel, this would seem a interesting and cost-efficient way of boosting the computational power of Intel/Linux platforms when using R (or S-plus). Thanks for any wise words, Kenneth

Canberra distance is defined in function `dist' (standard library `mva') as sum(|x_i - y_i| / |x_i + y_i|) Obviously this is undefined for cases where both x_i and y_i are zeros. Since double zeros are common in many data sets, this is a nuisance. In our field (from which the distance is coming), it is customary to remove double zeros: contribution to distance is zero when both x_i

Canberra distance is defined in function `dist' (standard library `mva') as sum(|x_i - y_i| / |x_i + y_i|) Obviously this is undefined for cases where both x_i and y_i are zeros. Since double zeros are common in many data sets, this is a nuisance. In our field (from which the distance is coming), it is customary to remove double zeros: contribution to distance is zero when both x_i

Dear R-devel(opers), I wanted to draw your attention to a small problem with the order function in base. According to the documentation, radix sort supports different orders for each argument. This breaks when one of the arguments is an object. Please have a look to this stackoverflow question:

Dear R folks, One of the fantastic new tools in R is `Sweave'. I have tested it so much that I know it works and produces fine documentation, and with (GNU) Emacs/ESS it is nice to work with, too. I started to have a look at including some Swoven (is that a strong verb?) documentation with my R package, but it seems that there is no model to copy among those packages that I have installed in

Hi; I cannot find in the R html documentation a way to evaluate cross-correlation in 2D data sets. I would like to evaluate cross-correlation in a series of moving windows between two maps. i,e, specify several windows inside the complete 2D spatial matrixes and for each one ofthese windows evaluate the 2D cross-correlation (commonly conducted in the spectral domain). Thanks in advance and best

Dear Mr Moderator, please let me through. I want to reply to my own thread. I once subscribed to this list, but then my subscription was not accepted. Now to the business: The final failure came from missing .install.macbinary() function. I grepped R-patched sourcesand the only instance of .install.macbinary() was the call to the function in R- patched/src/library/utils/R/packages2.R (stupid

Hi All, I am using Dovecot 1.0.13 with Vpopmail (Qmail Toaster current) backed by MySQL with one table per domain (--disable-many-domains) . What I cannot figure out is how to have Dovecot authenticate to Vpopmail when Vpopmail uses one table per domain. Basically I need dynamic SQL in the Dovecot-sql.conf file. Currently I have: password_query = select pw_clear_passwd as password from

I find it a bit peculiar that a package skeleton created with a utils function package.skeleton() fails subsequent R CMD check. I do understand that the function is intended to produce only a skeleton that should be edited by the package author. I think that it would be justified to say that the skeleton *should* fail the test. However, I have two arguments against intentional failure: * When you

Dear list members, I have a large dataset with point data. Each data point has X, Y, number of species present and values for one single explanatory variable. Each point was generated from a polygon grid shapefile and they are at equal distances. I conducted GLS analyses introducing variance structures and correlation structures to improve the model. I plotted variograms before and after adding

Hello, I am attempting to get the standard deviation in multiple distance bins in my spatial data. It appears as though the 'variog' command in the geoR package will do the trick, as one of the outputs from 'variog' is 'variog$sd', which, according to the manual, is the "standard deviation of the values in each bin". However, when I run this command, the

Hi All, I am a PhD student in forestry science and I am working with LiDAR data set (huge data set). I am a brand-new in R and geostatistic (SORRY, my background it?s in forestry) but I wish improve my skill for improve myself. I wish to develop a methodology to processing a large data-set of points (typical in LiDAR) but there is a problem with memory. I had created a subsample data-base but

Hello, can any one point me to R-packages (if available) which include spatial Markov Chain methods? My second question is more general but hopefully not OT: Currently we are using the software TPROGS, which let people simulate property distributions in space by some Markov Chain approaches. We face some problems due to the lack of information between distances of samples along borehole path

On Monday 20 November 2023 at 12:14:11, Tahir Almas Dhesi wrote: > Interested to know good wholesale SIP providers for 15k concurrent calls You might want to specify a bit more detail, such as: - which country are you located in - do you require inbound DDIs (if so, in which region/s)? - which countries' Caller ID/s do you need to present? Antony. -- These clients are often

Hello I will be applying MDS (actually Isomap) to make a psychological "concept map" of the similarities between N concepts. I would like to scale to a large number of concepts, however, the resulting N*(N-1) pairwise similarities is prohibitive for a user survey. I'm thinking of giving people random subsets of the pairwise similarities. Does anyone have recommendations for this

--==_Exmh_1801894504P Content-Type: text/plain; charset=us-ascii Dear R folks, Initially I had a plotting routine using logarithmic y-axes that failed after repeated calls if I tried to restore the graphical parameters (which I wanted to do because I used `layout' within the routine. I tried to isolate the problem and found out that the following code with logarithmic axis is sufficient for

Hello, I'm using the gstat package within R for an automated procedure that uses ordinary kriging. I can see that there is a logical ("singular") atrtibute of some adjusted model semivariograms: .- attr(*, "singular")= logi TRUE I cannot find documentation about the exact meaning and the implications of this attribute, and I dont know anything about the inner calculations

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samba@samba.org Giulio Orsero <giulioo@pobox.com> Mike Quin <m.r.quin@stir.ac.uk> Matthew Halliday <matthewh@fesa.co.uk> Carsten =3D?iso-8859-1?Q?Nordstr=3DF8m?=3D Jensen <north@get2net.= "Carlos Vinueza M." <carlos@ecuadorexplorer.com> Eric Dahnke <edahnke@istreetlabs.com> Giulio Orsero <giulioo@pobox.com> Giulio Orsero