Displaying 19 results from an estimated 19 matches for "biotecnologia".
2008 Oct 31
4
how to compute a roc curve
...and I'm getting lost
Could any of you recommend me an easy-to-use package to do this task? i just
have a list of positive/negative samples and his score on my program. can I
compute a roc curve with this?
thanks
pau
--
Pau Marc Muñoz Torres
Laboratori de Biologia Computacional
Institut de Biotecnologia i Biomedicina Vicent Villar
Universitat Autonoma de Barcelona
E-08193 Bellaterra (Barcelona)
telèfon: 93 5812807
Email : paumarc.munoz@bioinf.uab.cat
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2009 Sep 20
1
hola
hola a todos soy fabian huerta, de argentina, estudio lic en biotecnologia
y recien empiezo con R
saludos
fabian
Yahoo! Cocina
Encontra las mejores recetas con Yahoo! Cocina.
http://ar.mujer.yahoo.com/cocina/
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2007 Aug 15
2
X11 problems
...X11 fonts
Check that the Font Path is correct.
In addition: Warning messages:
1: locale not supported by Xlib: some X ops will operate in C locale
2: X cannot set locale modifiers
>
Can some body tell me what to do?
--
Pau Marc Muñoz Torres
Laboratori de Biologia Computacional
Institut de Biotecnologia i Biomedicina Vicent
Villar
Universitat Autonoma de Barcelona
E-08193 Bellaterra (Barcelona)
telèfon: 93 5812807
Email : paumarc.munoz@bioinf.uab.cat
[[alternative HTML version deleted]]
2023 Dec 08
2
regarding CCA plot
Hii rstudio members
I am learning rstudio, For my manuscript I am trying to plot CCA using
species and environmental data. But I am getting error like
Error in cca.default(sptrans, envtrans) :
all row sums must be >0 in the community data matrix
*My code is like *
library(vegan)
library(ggplot2)
library(dplyr)
rassspec<-read.csv("C:/Users/hp/Desktop/R_data/rassspec.csv",
2000 Mar 20
3
: multinom()
...ta, but have only encountered error messages.
On another note, Is it possible to get a set of discriminant scores for
the multinom fit using predict.nnet or some other function like for lda
using predict.lda?
Thanks
Peter
-------------
Peter Ho
Universidade Cat?lica Portuguesa
Escola Superior de Biotecnologia
Rua Dr. Ant?nio Bernardino de Almeida
4200-072 Porto
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1999 Feb 15
0
can't find functions?
...nd
R0.63.2.
Any suggestions?
Also, I tried to update the html help using make.packages.html() and
got the following:
> make.packages.html()
1:
Can anyone tell me what do I type next? In R0.63.1 this does not happen
and the help files are updated without a problem.
PeterHo
Escola Superior de Biotecnologia
Universidade Cat?lica Portuguesa
Rua Dr. Ant?nio Bernardino de Almeida
4200 Porto
Portugal
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1999 Oct 07
0
Xgobi under Windows
...y case my parent directory for Xgobi was Xgobi3.
4) From within R do the following.
> library(xgobi)
then you can use the function:
> xgobi(your matrix or data.frame)
That's ll you need to do.
Thanks again
Peter
------------------------------------
Peter Ho
Escola Superior de Biotecnologia
Universidade Cat?lica Portuguesa
Rua Dr. Ant?nio Bernardino de Almeida
4200 Porto
Portugal
Tel: ++351-2-5580043
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1999 Oct 14
1
:Citing R
...only thing I can come up
with so far is,
R Development Core Team. 1999. R : A language and environment.
Should the version of R be included? i.e. Linux, windows?
Thanks
Peter
-----------------------------------------------------------------------------------------
Peter Ho
Escola Superior de Biotecnologia
Universidade Cat?lica Portuguesa
Rua Dr. Ant?nio Bernardino de Almeida
4200 Porto
Portugal
Tel: ++351-2-5580043
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
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1999 Nov 09
0
Xgobi for windows NT
...do the following.
>
>> library(xgobi)
>
>then you can use the function:
>
>> xgobi(your matrix or data.frame)
>
>
>That's ll you need to do.
>
>Thanks again
>
>Peter
>
>------------------------------------
>Peter Ho
>Escola Superior de Biotecnologia
>Universidade Cat?lica Portuguesa
>Rua Dr. Ant?nio Bernardino de Almeida
>4200 Porto
>Portugal
>Tel: ++351-2-5580043
>
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2001 Jun 28
0
: k-fold cross validation for fda,mda etc
...whereas the function fda(),
using the formula argument only.
Is there another way of doing k-fold cross validation for functions
which only have the formula argument, like for fda() and mda() ?
Peter
--------------------------------------------------------
Peter Ho GradIFST
Escola Superior de Biotecnologia
Universidade Cat?lica Portuguesa
Rua Dr. Ant?nio Bernardino de Almeida
4200-072 Porto
Portugal
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2006 Jun 26
1
Plylogenetic analysis
Dear coleges,
How to use the genotype from microsatelite markers
from many different populations to construct a
tridimensional phylogenetic tree with R? Any
suggestions?
Thank you very much!
Baron, Erica
Dra. Erica Baron
Universidade dos A?ores - Departamento de Ci?ncias Agr?rias
Grupo de Biotecnologia - Campus de Angra
Terra-Ch?
9701-851
A?ores - Portugal
Tel. +351 295 402 235
Fax. +351 295 402 205
eribaron at mail.angra.uac.pt
2000 Feb 29
0
se.contrasts.
...and multivariate approach.
I have looked at the growth and rmutil, which the author J Lindsey
suggested could be used, but as I had no experience using them, again I
did not know what to do. Has anyone tried this approach?
Thanks
Peter
-----------------------------
Peter Ho
Escola Superior de Biotecnologia
Universidade Cat?lica Portuguesa
Rua Dr. Ant?nio Bernardino de Almeida
Porto 4200-072
Portugal
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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1999 Aug 24
1
package mlbench updated
Hi,
Evgenia and I have copied an updated version of the mlbench package to
CRAN which contains several new data sets. We have also changed some
of the variable names to avoid name conflicts.
Best,
--
-------------------------------------------------------------------
Friedrich Leisch
Institut f?r Statistik Tel: (+43 1) 58801 10715
Technische
1999 Aug 24
1
package mlbench updated
Hi,
Evgenia and I have copied an updated version of the mlbench package to
CRAN which contains several new data sets. We have also changed some
of the variable names to avoid name conflicts.
Best,
--
-------------------------------------------------------------------
Friedrich Leisch
Institut f?r Statistik Tel: (+43 1) 58801 10715
Technische
2001 Jun 08
1
:predict.ppr
...t.ppr
in the index for modreg, but that link is to the help for ppr().
Has predict.ppr() not been implemented?
If not, does anyone have a suggestion as to how to implement
predict.ppr() in R?
Thanks
Peter
-------------------------------------------------
Peter Ho GradIFST
Escola Superior de Biotecnologia
Universidade Cat?lic Portuguesa
Rua Dr. Ant?nio Bernardino de Almeida
4200 Porto
Portugal
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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1999 Oct 07
1
Xgobi
...u know how I
can get Xgobi to accept any of my data.frames? Xgobi runs well on the
flea example found in the Xgobi package.
Also, if the path of the data file is placed after c:\Xgobi3\xgobi.exe,
then Xgobi will work with this file.
Thanks
Peter
---------------------
Peter Ho
Escola Superior de Biotecnologia
Universidade Cat?lica Portuguesa
Rua Dr. Ant?nio Bernardino de Almeida
4200 Porto
Portugal
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
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1999 Sep 21
1
regressions (simple question)
I have a list of measurements taken at 1 second samples in a vector (y).
All I want to do is generate a regression through them, and obtain the
residuals in another vector. I am currently using the 'line' function from
the eda package to do this (ie :
z <- line(time,y)
rsd <- residuals(z)
)
but this method does not handle NA values in the data. I would like to try
to use the lm
2001 May 08
3
Replacing missing values
I'm discovering R (very impressive), and didn't find in the docs a simple
method for replacing, in a data frame, missing values (NA) with the
column's mean (or any other method for reconstructing missing values when
needed).
Thanks in advance for your help.
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2000 Jan 04
0
Stepwise logistic discrimination - II
...ull list of variables "F25 +F26
+........+F150". StepAIC removed the first 2 variables then produced the
same error message as before. See setp126.txt
Is this a bug? Is there a maximum number of variables which stepAIC can
handle?
Peter
--------------------
Peter Ho
Escola Superior de Biotecnologia
Rua Dr. Ant?nio Bernardino de Almeida
4200 Porto
Tel: ++351-22-5580043
-------------- next part --------------
> nose20s.mu <- multinom(Spoilage ~ FRAG25 + FRAG26 + FRAG27 + FRAG28 + FRAG29 + FRAG30 + FRAG31 + FRAG32 + FRAG33 + FRAG34 + FRAG35 + FRAG36 + FRAG37 + FRAG38 + FRAG39 + FRAG40 + F...