search for: 3j7

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binding vectors or matrix using their names
2004 Mar 24
7
binding vectors or matrix using their names
...e job ? If not, how can I do it ?? Thanks in advance, Sincerely. St?phane DRAY -------------------------------------------------------------------------------------------------- D?partement des Sciences Biologiques Universit? de Montr?al, C.P. 6128, succursale centre-ville Montr?al, Qu?bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web http://www.steph280.freesurf.fr/
Multiple operations on list
2004 Sep 20
4
Multiple operations on list
...to do it without for loop ? Thanks in advances, sincerely St??phane DRAY -------------------------------------------------------------------------------------------------- D??partement des Sciences Biologiques Universit?? de Montr??al, C.P. 6128, succursale centre-ville Montr??al, Qu??bec H3C 3J7, Canada Tel : (514) 343-6111 poste 1233 Fax : (514) 343-2293 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web http://www.steph280.freesurf.fr/
real eigenvectors
2003 Nov 04
2
real eigenvectors
...n asymmetric matrix (if some conditions exist)? Thanks in Advance, St?phane DRAY -------------------------------------------------------------------------------------------------- D?partement des Sciences Biologiques Universit? de Montr?al, C.P. 6128, succursale centre-ville Montr?al, Qu?bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web http://www.steph280.freesurf.fr/
Generate a matrix Q satisfying t(Q)%*%Q=Z and XQ=W
2004 Jul 06
2
Generate a matrix Q satisfying t(Q)%*%Q=Z and XQ=W
...I should ask this question. Thanks in advance, Sincerely. St??phane DRAY -------------------------------------------------------------------------------------------------- D??partement des Sciences Biologiques Universit?? de Montr??al, C.P. 6128, succursale centre-ville Montr??al, Qu??bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web http://www.steph280.freesurf.fr/
Strange R behavior for product of two sum of integers
2011 Oct 20
3
Strange R behavior for product of two sum of integers
...00:1205)*sum(1000:1205) [1] NA Warning message: In sum(1000:1205) * sum(1000:1205) : NAs produced by integer overflow Best, Pierre -- Pierre Lafaye de Micheaux Adresse courrier: D?partement de Math?matiques et Statistique Universit? de Montr?al CP 6128, succ. Centre-ville Montr?al, Qu?bec H3C 3J7 CANADA Adresse physique: D?partement de Math?matiques et Statistique Bureau 4249, Pavillon Andr?-Aisenstadt 2920, chemin de la Tour Montr?al, Qu?bec H3T 1J4 CANADA T?l.: (00-1) 514-343-6607 / Fax: (00-1) 514-343-5700 lafaye at dms.umontreal.ca http://www.biostatisticien.eu
orthonormalization with weights
2004 Feb 23
2
orthonormalization with weights
...he case of non uniform weights by qr or svd ? Thanks in advances. St?phane DRAY -------------------------------------------------------------------------------------------------- D?partement des Sciences Biologiques Universit? de Montr?al, C.P. 6128, succursale centre-ville Montr?al, Qu?bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web http://www.steph280.freesurf.fr/
pseudo-R2 or GOF for regression trees?
2007 May 05
3
pseudo-R2 or GOF for regression trees?
...** Bureau: ** ** professeur adjoint / assistant professor ** Salle 440 ** ** Université de Montréal ** Pavillon Strathcona ** ** C.P. 6128 ** 520, chemin de la Côte-Ste-Catherine ** ** Succursale Centre-ville ** Montreal, QC H2V 2B8 ** ** Montréal, QC, H3C 3J7 ** Télé: (514) 343-8003 ** ************************************************************************ ************************************ ** Web: ** ** http://www.geog.umontreal.ca/geog/cardille.htm ** ** ** ** Calendrier de Disponibilité à: ** ** http://jeffcar...
To moderator
2011 Nov 13
1
To moderator
...Pierre >> >> >> -- >> Pierre Lafaye de Micheaux >> >> Adresse courrier: >> D?partement de Math?matiques et Statistique >> Universit? de Montr?al >> CP 6128, succ. Centre-ville >> Montr?al, Qu?bec H3C 3J7 >> CANADA >> >> Adresse physique: >> D?partement de Math?matiques et Statistique >> Bureau 4249, Pavillon Andr?-Aisenstadt >> 2920, chemin de la Tour >> Montr?al, Qu?bec H3T 1J4 >> CANADA >> >> T?l.:...
scan seems to modify the data
2004 Mar 31
3
scan seems to modify the data
...1 minor 8.1 year 2003 month 11 day 21 language R St?phane DRAY -------------------------------------------------------------------------------------------------- D?partement des Sciences Biologiques Universit? de Montr?al, C.P. 6128, succursale centre-ville Montr?al, Qu?bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web http://www.steph280.freesurf.fr/
binding rows from different matrices
2004 Jun 29
2
binding rows from different matrices
...ot; "T" "Y" > Thanks in advance ! St??phane DRAY -------------------------------------------------------------------------------------------------- D??partement des Sciences Biologiques Universit?? de Montr??al, C.P. 6128, succursale centre-ville Montr??al, Qu??bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web http://www.steph280.freesurf.fr/
writing polygons/segments to shapefiles (.shp) or other ArCGIS compatible file
2004 Feb 25
2
writing polygons/segments to shapefiles (.shp) or other ArCGIS compatible file
I am not sure a previous e-mail reached the list (no mail aknowledgement from R-boundle etc.). The question was how to write polygon or segment coordinates into a shapefile set or any other ArcGIS supported format. The library shapefiles seems to do something but the documentation is a bit beyond of my mind.... and I cannot get the meaning of the functions write**** and its application to the case
ade4
2004 Jan 01
1
ade4
Dear All, I am using the scatter.dudi finction in the 'ade4' package to produce correspondence analysis (nice) plots. I do not seem to figure out how to plot the raw coordinates only -- or column coordinates only. I would appreciate any help in doing that. Here is the example I am following -- from the package. data(banque) > banque.acm <- dudi.acm(banque, scann = FALSE, nf =
bray-curtis?
2004 Mar 16
2
bray-curtis?
Does R have a function to calculate Bray-Curtis distance measures, which is probably one of the most frequently used and recommended dissimilarity measures in ecology? It isn't mentioned in dist().
Débutant R
2004 Mar 22
1
Débutant R
Bonjour à tous, Je débute dans l'utilisation de R, et suis à la recherche de toute piste me permettant l'introduction à ce logiciel. J'ai pour le moment la fiche d'Emmanuel Paradis: "R pour les débutants", mais j'aimerais savoir où je peut trouver d'autres documentations notamment pour le traitement statistique de données (Anova, modèle linéaire et modèle
Problems with environments, I think..
2004 Mar 25
0
Problems with environments, I think..
...find how to solve it. Hope that somebody can help me, Sincerely. St?phane DRAY -------------------------------------------------------------------------------------------------- D?partement des Sciences Biologiques Universit? de Montr?al, C.P. 6128, succursale centre-ville Montr?al, Qu?bec H3C 3J7, Canada Tel : 514 343 6111 poste 1233 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web http://www.steph280.freesurf.fr/
problem with pca
2004 Apr 29
1
problem with pca
Hello I have some kind of problem with R. I want to do a pca (I work on R and ade4 library) but R doesn't wan to realize my pca because of my data: I have some binary variable (presence/absence of birds, hole, vegetals...) and metric variable (cliff 's size...) and each time I have an error message because of the mix of the 2 type of variable. So, what can I do? Famille SALMON
Calling Lapack From C code
2004 Aug 11
0
Calling Lapack From C code
...e would be very appreciate. Thanks in advance, Sincerely. St??phane DRAY -------------------------------------------------------------------------------------------------- D??partement des Sciences Biologiques Universit?? de Montr??al, C.P. 6128, succursale centre-ville Montr??al, Qu??bec H3C 3J7, Canada Tel : (514) 343-6111 poste 1233 Fax : (514) 343-2293 E-mail : stephane.dray at umontreal.ca -------------------------------------------------------------------------------------------------- Web http://www.steph280.freesurf.fr/
Clustering in R
2004 Dec 08
2
Clustering in R
Is there a command to get cluster criterion for the cluster methods? SAS has its criterion, but I prefer to do it in R. If there is not a command is there code to produce criteria to choose the number of clusters? Adrian Katschke Statistics Grad Student University of Nebraska-Lincoln [[alternative HTML version deleted]]
R-code for binormla distribution
2005 Sep 28
1
R-code for binormla distribution
...r R) to compute the binormal distribution (or the upper its quadrant area) other than the pmvnorm. Thanks -- Nabil Channouf etudiant en Ph.D. Bureau 3733 Departement d'Informatique et de Recherche Operationnelle (D.I.R.O.) Universite de Montreal, C.P. 6128, succ. Centre-Ville, Montreal, H3C 3J7 Tel.: (514) 343-6111, poste 1796 Fax.: (514) 343-5834 courriel: channoun at iro.umontreal.ca
Citation
2004 Dec 31
3
Citation
Does anyone know R is to be cited in a publication? I've looked everywhere on the website and cannot find this. Thanks, Heather -- Heather Maughan Department of Ecology and Evolutionary Biology Biosciences West 310 University of Arizona Tucson, AZ 85701 Phone: 520-626-5108 Fax: 520-621-9190 hmaughan at u.arizona.edu