similar to: Direct sum of matrices

Hello List I have just written a little function that takes two matrices as arguments and returns a large matrix that is composed of the two input matrices in upper-left position and lower-right position with a padding value everywhere else. (function definition and toy example below). I need nonsquare matrices and rowname() and colname() inherited appropriately. Two questions: (1) Is there a

Hi I have two arbitrarily dimensioned arrays, "a" and "b", with length(dim(a))==length(dim(b)). I want to form a sort of "corner-to-corner" version of abind(), or a multidimensional version of blockdiag(). In the case of matrices, the function is easy to write and if a=matrix(1,3,4) and b=matrix(2,2,2), then adiag(a,b) would return: [,1] [,2] [,3] [,4] [,5]

Folks: In answer to a query, Andy Liaw recently submitted some code to construct a block diagonal matrix. For what seemed a fairly straightforward task, the code seemed a little "overweight" to me (that's an American stock analyst's term, btw), so I came up with a slightly cleaner version (with help from Andy): bdiag<-function(...){ mlist<-list(...) ## handle case in

? stato filtrato un testo allegato il cui set di caratteri non era indicato... Nome: non disponibile Url: https://stat.ethz.ch/pipermail/r-help/attachments/20071023/b860b22b/attachment.pl

Dear R-users, I am searching to the "best" way to compute a series of n matrix multiplications between each matrix (mXm) in an array (mXmXn), and each column of a matrix (mXn). Please find below an example with four possible solutions. The first is a simple for-loop which one might avoid; the second solution employs the tensor product but then manually selects the right outcomes. The

Hi All, I tried my best to figure out how to deal with the freezing R console but with no luck. I followed the instructions of calling R_ProcessEvents() regularly but still couldn't work it out (the callings were removed from the below C code). I am using R-2.8.1 on Windows XP service pack 3. The Rtools is version 2.9. I have the following C code: void rx(int *n, int *m, int *rxmax,int

Netback and netfront only use one event channel to do tx / rx notification. This may cause unnecessary wake-up of process routines. This patch adds a new feature called feautre-split-event-channel to netback, enabling it to handle Tx and Rx event separately. Netback will use tx_irq to notify guest for tx completion, rx_irq for rx notification. If frontend doesn''t support this feature,

Author: robert.moran Date: Sun May 31 11:13:23 2009 New Revision: 11 Modified: trunk/source/mxn.core.js trunk/source/mxn.js trunk/source/mxn.yahoo.core.js trunk/tests/index.htm Log: Added functionality to automatically load scripts needed. Allowed mapstraction default constructor to have provider omitted (will use first loaded provider). Minor change to yahoo implementation -

In my app (v2.0.15) and on the mapstraction demo the first time I load the page in Safari I get the error "Can''t find variable: mxn" and the map doesn''t load. http://mapstraction.appspot.com/ mapstraction.googlecode.com/svn/trunk/source/mxn.core.js:6ReferenceError: Can''t find variable: mxn I''ve seen a few old posts in the list archives about similar

Fellow mapstractors, I''m speaking about mapstraction tonight at a London neogeo event - #geomob http://gmdlondon.ning.com/events/geomob-november basically I''ll jus be explaining what mxn is, how ift can be used, and a brief history of the project and trying to encourage more people to contribute. My slides are here: http://www.slideshare.net/lokku/mapstraction-2537688 let me

Hey all, I''m wondering about your thoughts on upgrading the Geocoder to use Mapstraction V2. Currently it uses the old syntax (i.e., for LatLonPoint, etc.): http://mapstraction.appspot.com/#geocoding Moving from V1 to V2 is fairly simple changes to the code. However, I wonder whether we want to update the way the geocoder is structured, as well? Some options: 1) Roll geocoding

Hello, I''m back with another problem, the method Marker.openBubble isn''t implemented yet. I tried to hack a solution but I encountered some problems. When the popup is created in the toProprietary method from Marker in mxn.openlayers.core.js, I keep a reference on it with a this.infoPopup = popup. Later in the openBubble method, I do :

Hi, is tehre any news on the safari reload bug? Maybe a workaround? Mapstraction is sometimes not displayed on reload... regards Henrik

I am trying to use the marker method addlistener(). A simplified version of what I''m trying to do: var map; var marker; map = new mxn.Mapstraction(''myMap'',''google''); map.setCenterAndZoom(new mxn.LatLonPoint(45.559242,-122.636467), 15); marker = new mxn.Marker(new mxn.LatLonPoint(45.559242,

I mistakenly left a write in "/tmp" in the rockchalk package (version 1.8.109) that I uploaded last Friday. Kurt H wrote and asked me to fix today. While uploading a new one, I became aware of a problem I had not seen. The version I uploaded last Friday, 1.8.109, has OK status on all platforms except r-release-windows-ix86+x86_64. I get OK on oldrel-windows and also on devel-windows.

Hi the list Is it possible to create an empty matrix ? I do not mean an matrix with a single value that is NA (which is not empty) but a real empty one, with length=0. I do not understand why we have length(numeric()), length(factor()) and length(character()) to zero, and length(array()) to one... Any rason for that ? Thanks Christophe

I have noticed the same thing. RedHat's smbmount can mount a read/write a share just fine. But the smbmount in SuSE 10 can not. I get "Permission denied" when I try to look at the mount using 'df.' # smbmount Usage: mount.smbfs service mountpoint [-o options,...] Version 3.0.20-4-SUSE ... # smbmount //appsrv/rxs /mnt/rxs -o

Hi, I am starting to use Mapstraction with the openlayers provider, and I am not sure how to retrieve the current center of a map in a cross-provider way. i.e. currently when calling map.getCenter(), the result returned is the openlayers internal one, not the long/lat used when calling setCenter(). Is that the expected behaviour? Regards, Philippe -------------- next part -------------- An

From: Santosh Jodh <santosh.jodh at citrix.com> Add support for multi page ring for block devices. The number of pages is configurable for blkback via module parameter. blkback reports max-ring-page-order to blkfront via xenstore. blkfront reports its supported ring-page-order to blkback via xenstore. blkfront reports multi page ring references via ring-refNN in xenstore. The change allows

From: Santosh Jodh <santosh.jodh at citrix.com> Add support for multi page ring for block devices. The number of pages is configurable for blkback via module parameter. blkback reports max-ring-page-order to blkfront via xenstore. blkfront reports its supported ring-page-order to blkback via xenstore. blkfront reports multi page ring references via ring-refNN in xenstore. The change allows