Displaying 17 results from an estimated 17 matches similar to: "In robust PCA methods, how to get variance explained?"
2011 Jul 13
2
Package rrcov, functions PcaCov, PcaHubert, PcaGrid
Hello,
I'm using the R-2.13.1 version in Windows and I'm trying to do a robust Pca
with the following:
x<-matrix(0.5,30,30)
library("rrcov")
y<-PcaCov(x)
The following error occurs:
Error: diff(sv)<0 ist not all TRUE
The same error occurs with the other functions. What does this mean and how
can I perform the robust PCA with these functions by using a quadratic
2014 Feb 06
2
Consulta spplot
Buenas tardes,
Estoy probando a leer archivos netcdf (como raster stack) y crear
animaciones de datos de modelos climáticos y estaba utilizando para
generar las imágenes spplot(). Estás imágenes tienes superpuestas
varias capas de imagenes, el mdt de base, nubosidad, precipitación y
nieve. Mi pregunta es la siguiente,¿es posible visualizar la leyenda
de cada una de las capas?
Actualmente solo
2004 May 03
1
Speed up graphics output?
Hi all,
I've written some code to generate 4 maps per screen and write the output to a jpeg. The output is fairly quick at the start (about 5 jpegs per minute) and then slows down greatly (1-2 jpegs per minute).
Is there some way to speed it up? One of my thoughts is to keep the base map static on the screen and just update the points that are being plotted on the map (with the exception
2017 Aug 28
3
Extracting subset from netCDF file using lat/lon and converting into .csv in R
I have a series of nertCDF files containing global data for a particular
variable, e.g. tmin/tmax/precipiation/windspeed/relative
humuidity/radiation etc. I get the following information when using
*nc_open* function in R:
datafile: https://www.dropbox.com/s/xpo7zklcmtm3g5r/gfdl_preci.nc?dl=0
File gfdl_preci.nc (NC_FORMAT_NETCDF4_CLASSIC):
1 variables (excluding dimension variables):
2017 Aug 28
0
Extracting subset from netCDF file using lat/lon and converting into .csv in R
Two questions:
1. Is the order of the dimensions shown what is shown if you look at str(ncin) - I mean shown at the end where it describes the variable and its dimensions?
2. Is you problem how to subset the netcdf file, how to write to the .csv file, or both?
-Roy
> On Aug 28, 2017, at 2:21 PM, Eeusha Nafi <eshad002 at gmail.com> wrote:
>
> I have a series of nertCDF files
2004 Aug 19
1
precision problems in testing with Intel compilers
I compiled the 1.9.1 src.rpm with the standard gnu tools and it works.
I tried compiling the 1.9.1 src.rpm with the Intel 8 C and FORTRAN
compilers and it bombs out during the testing phase:
comparing 'd-p-q-r-tests.Rout' to './d-p-q-r-tests.Rout.save' ...267c267
< df = 0.5[1] "Mean relative difference: 5.001647e-10"
---
> df = 0.5[1] TRUE
2012 May 27
0
path analysis and diagram (structural model)
Hi R- USER,
I have been struggling to compute path analysis in R. I installed package "sem" and I tried to run the analysis but could not get a diagram.
I have very big data set, here I just copied a sample of my data and I wanted to see how I can do the path analysis and get the patch diagram (with r2 in each path).
I have two tables; 1: num. of species - which is the depended
2005 Mar 31
3
Error when add Samba 3.0.10-1.fc3 to Windows NT Domain
I am trying to install a File server using samba on a NT 4.0 domain.
I will call the domain DOMAIN, the pec PDC, the samba file server SAMBA,
and so on... :D
The linux is an updated Fedora Core 3, and the samba version is 3.0.10-1.fc3
I used SWAT to configure. Here is some lines of my smb.conf:
workgroup = DOMAIN
server string = SAMBA
interfaces = eth
security = domain
Then i looked on the
2018 Mar 12
4
Linux boot hangs after/during read of initrd.img
Precis: I?m trying to debug a problem with CentOS7 failing to install from an ISO written to a USB pendrive ? anyone got suggestions?
What works ? installing on a modern, ?standard PC?; the pendrive image boots and installs as I expect
What does not work ? same pendrive booting in an ATCA blade. What I?ve tried is?
1. Boot the standard CentOS7 minimal image. This seems to start but then
2004 Dec 01
3
Advantage of IAX2 to SIP?
Hi!
Some - few - providers are using IAX2 as a protocol. Most are using SIP.
I know that there are advantages of IAX2 regarding multiple connections.
But beside this I'm asking myself (and you all) why I should prefer IAX2
when my SIP connection is working.
Are there differences in the performance?
Bye!
Michael
2006 Jan 18
1
function 'eigen' (PR#8503)
Full_Name: Pierre Legendre
Version: 2.1.1
OS: Mac OSX 10.4.3
Submission from: (NULL) (132.204.120.81)
I am reporting the mis-behaviour of the function 'eigen' in 'base', for the
following input matrix:
A <- matrix(c(2,3,4,-1,3,1,1,-2,0),3,3)
eigen(A)
I obtain the following results, which are incorrect for eigenvalues and
eigenvectors 2 and 3 (incorrect imaginary portions):
2008 Feb 16
2
Possible overfitting of a GAM
The subject is a Generalized Additive Model. Experts caution us against
overfitting the data, which can cause inaccurate results. I am not a
statistician (my background is in Computer Science). Perhaps some kind soul
would take a look and vet the model for overfitting the data.
The study estimated the ebb and flow of traffic through a voting place. Just
one voting place was studied; the
2005 May 19
1
R 2.1.0 RH Linux Built from Source Segmentation Fault
Background:
I administer a cluster of RedHat EWS 3U4 Linux workstations at a university.
I built R 2.1.0 from source:
./configure \
--prefix=/sscc/opt/R-2.1.0 \
--with-blas=no \
2>&1 \
| tee NUInstall.configure
R is now configured for i686-pc-linux-gnu
Source directory: .
Installation directory: /sscc/opt/R-2.1.0
C compiler:
2007 Mar 13
5
can´t access share by name, but on ip
Hi All !
i?m running Clearcase (IBM Rational) and have some strange problems ... when i use Samba ver 3.21b i can?t access the samba share by name (\\servername\sambashare) but i can access it on ip (\\192.168.1.100\sambashare\) i?m running debug level 10 and it seems like it can?t authenticate when access on netbios/dns/host name but on ip it can ? when running samba ver 3.23b from
2018 Jul 24
2
[DWARF] De-segregating type units and compile units
Hello DWARF fans,
I've just posted a set of four refactoring patches for DebugInfo/DWARF,
which move in the direction of handling DWARF v4 or v5 type units and
compile units more coherently.
In DWARF v4, type units and compile units are strictly segregated into
the .debug_types and .debug_info sections, respectively. This division
was pretty ingrained into how DebugInfo/DWARF handled the
2006 Feb 25
20
Agile Rails book code fails page 32
Starting Agile Web Development with Rails, page 32, everything has worked
well so far but on (book not pdf) page 32 I don''t get the "Template Is
Missing" error. I get
Routing Error
Cannot load config/routes.rb:
No such file to load -- ./demo/script/../config/../config/routes.rb
There is a file at e:\ruby\ror\work\demo\config\routes.rb
It''s all greek to me and
2018 May 07
2
Comparing figures?
Hello,
I am working on tests to compare figures. I have been using ImageMagick, which creates a figure signature, and I can compare a "test" figure signature against a saved "reference" figure signature. It seems to work pretty well. However, it is slow as it requires reading from the file system.
Are there any options to compare figures on memory? For example, if I