search for: snn

Hello, is there an implementation available for a shared nearest neighbor (SNN) clustering algorithm? //Jay

Dear All   I trained a neural network for 200 data and I did prediction for a grid file (e.g. 1000000 points) such as below:   snn<-predict(nn, newdata=data.frame(wetness=wetnessgrid$band1, ndvi=ndvigrid$band1))   the pixels of snn is same with wetnessgrid or ndvigrid    I want to convert this file (snn) to a map that I can open it in GIS software.     Thanks alot     [[alternative HTML version deleted]]

Hi All, I have data for two groups, group with 100 points and group B with 15 points. i needed plot these two groups in one scatter plot, each group with a different color. I tried plot3d(data, col = c("red", "blue")[c(rep(1, 100), rep(2, 15))], pch=20) . this works but the graph does not look good. the other option that I tried is scatterplot3d(data, type="p",

Hi, I do have a file that has 500000 columns and 40 rows. I want to apply PCA on that data and this is what I did h1<-read.table("Ccode.txt", sep='\t', header=F) # reads the data from the file Ccode.txt h2<-prcomp(na.omit(h1),center=T) but I am getting the following error "Error in svd(x, nu = 0) : 0 extent dimensions" I appreciate if someone can help

Hi All, this could be a simple question but I am looking into modifying a data frame using a "condition" without the need to loop over that data, would that be possible? I have tried the following > x<-c(4,5,6,6,8) > y<-c("a","b","b","b","c") > data<-data.frame(x,y) > data x y 1 4 a 2 5 b 3 6 b 4 6 b 5 8 c if

Hi, I am trying to run PCA on a set of data with dimension 115*300,000. The columns represnt the snps and the row represent the individuals. so this is what i did. #load the data code<-read.table("code.txt", sep='\t', header=F, nrows=300000) # do PCA # pr<-prcomp(code, retx=T, center=T) I am getting the following error message "Error: cannot allocate vector of

Hi, I have used multiple linear regression on a data set and one if the regressor was significant with a p-value =0.01 I need to calculate the power for a multiple linear regression. i.e. do I have enough power to believe the above p-value? -- View this message in context: http://www.nabble.com/power--tp25776305p25776305.html Sent from the R help mailing list archive at Nabble.com.

Hi, I need to rbind two data frames. Each one has a header . after the rbind I would like to keep the header for each and have the two data frames separated by a line. Is this possible to do in R? For example weight_mean weight_sd.dev > F 14.33333 4.932883 > M 34.66667 10.692677 > > hight_mean hight_sd.dev > F 35.00000 7.071068 > M 34.66667 10.692677 --

Hi, I am conducting an association analysis of genotype and a phenotype such as cholesterol level as an outcome and the genotype as a regressor using multiple linear regression. There are 3 possibilities for the genotype AA, AG, GG. There are 5 people with the AA genotype, 100 with the AG genotype and 900 with the GG genotype. I coded GG genotype as 1, AG as 2 and AA as 3 and the p-value for the

https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=443 ------- Additional Comments From nothingel@hotmail.com 2006-02-08 05:35 MET ------- I also, the situation described in bug ID 322 seemed related and I tried the patch from Phil Oester but it did not make a difference. -- Configure bugmail: https://bugzilla.netfilter.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving

https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=552 ------- Additional Comments From cbettero@ciditech.it 2007-03-04 21:48 MET ------- This problem prevents AJAX web sites to be hosted on the internal web server, because many packets will be dropped instead of passing into PREROUTING chain... -- Configure bugmail: https://bugzilla.netfilter.org/bugzilla/userprefs.cgi?tab=email

Hi, Trying to setup a logistic regression model. (Something new to me. I usually use SVM.) The person explaining the concept explained to me that I can include a "group" variable so that the probabilities predicted by the model will be "per group" Does this make sense to anyone? If so, how would I implement this? Using the glm or lrm function? Thanks! -N

Dear all, finally decided to do an Ubuntu upgrade and a new clean R install from http://cran.r-project.org/bin/linux/ubuntu/. However, while trying to install a package from R-forge I encountered problems, involving error messages saying "Rscript execution error: No such file or directory" (see below). The same procedure works on Ubuntu 11.04 running R 2.12.1-1 from the Ubuntu

Hi All, I have data with 400 individuals and the following information Grade: pass or fail coded as 1 for pass and 0 for fail Sex: male or female ( coded as 1 for male and 2 for female ) Age Teaching.method : can be 1,2,3 I want to fit a logistic regression where the outcome if (1=pass or 0 for fail) and the rest of the variables are the regressors. My question is that I am not sure

https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=443 ------- Additional Comments From nothingel@hotmail.com 2006-03-17 20:07 MET ------- sorry for the delay...I'll check this out hopefully first of next week. -- Configure bugmail: https://bugzilla.netfilter.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug,

Nut will monitor the ups and shutdown Linux when the ups goes to low battery as it should. But the UPS is not shut down so the system will restart when the power is restored. If I switch the UPS off , restore power and switch the UPS on the system will restart. I have not been able to get nut to switch the UPS off after it brings the system down. I can get the UPS to switch off with upscmd

Hi. To begin with, I have a freshly built RedHat Linux 8.0 box running samba 2.2.8a. The kernel version is 2.4.18-14. I downloaded and compiled samba from source. I am using LPRng-3.8.9-6 as my printing system. The attached printer is a Lexmark Z22 printer and it is attached to the parralel port. Problem: For the life of me, I can't get NT type clients, NT4, 2K and XP to print to samba.

...~ZFA`Xh>@vUT5fb}n6Xwmug>vo`*9%NC^*Ld*00qCJqB1=F$d`nJb zYazVG5NhZP@cED+R(X4GNjdH2CH$wPZ|sf-W>@LOQ_z`^aBpwXo$en<B`ACO+e((C z_2E+S42n=e^T$N(;KmXoidTfcfOg4>suY%-Bd20^xH2NDhAh2@C1NeE0eXgu2=K(t zky8*8d(@(gWq^o7Q$9WsijA0mrnIH<;9?Uo7!^oNBmPb~@Y?ytV!6O)CuRs#r@^Tk zmT*ErgAY9UfJh1X8xe!Dl+>snN+9Pqw2tpIV;g`F1xyi1OH0f6vZR!2@OFZ)aEN|T z!rr&%=`z2TCO%Cx1z45$t7(#*lbak;A&MDqfob;_)CfI6fD>H}wC1L#@-C+JHVG&t zNiYhF%D)4x)7_5$#VQGND2#$EqNgb$avNJtgTceCTB+0S?25MY+l2TnV8rhgbQVuP zpfU*}8Tm`O4Gg$4HHcsg&KnTjOJTq}<Bs&yLq|qVE=U~Af}h(@8CGfQ^Y8p8B!KR* z6j2?eu*<qt<?lF+nd*z}+7c&am...

Hi All, I have a problem with rbind. I have data that consist of weight height .. etc of 1000 patients. I would like to find the mean and the standard deviation ( for the weight , height etc) for each gender. data<-read.table("data.txt", header=T, sep='\t') fdata=NULL for (i in 1:50){ nn<-names(X)[i] m<-tapply(X[,i],data$gender,mean,na.rm=T) s<-tapply(X[,i],