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Qian Liu <littleduck24 <at> gmail.com> writes: > > Hi I need some help with ploting the ROC for K-nearest neighbors. Since KNN > is a non-parametric classification methods, the predicted value will be > either 0 or 1. > It will not...

Hi R users, I need your help to write a code in r that does the following calculation from three different datasets; ac = 1/sum (NPP from date 1 to date 2, dataset=1) * (biomass at date 2 -biomass at...

Hi R users, I would like to adjust the pch size in a legend without changing the text size, pt.cex does not do the job. R 2.15.2 32 bit. legend(0,2100, legend=c("2009","2010","2012...

I was trying to convert a csv file to SpatialPolygonsDataFrame and I was encountering several problems. Would you have any case study that I could follow. I used this script and keep getting the following error > AB <- read.csv("map...

Hi everyone, I am getting a strange warning only on celaya2 for my package: Warning: multiple methods tables found for rowSums Warning: multiple methods tables found for colSums Warning: multiple methods tables found for rowMeans Warning: multiple methods tables found...

Dear R-experts, How can I remove a certain feature or observation by a part of its name. To be clear, I have a matrix with 766 observations as a rows. The row names are like this 70/556 71...

I would like to get the fortran code for the functions locpol and dpill in the kernsmooth library , the purpose is to incorporate other selection criterion for the bandwidth in which a varying bandwidths are replaced instead of the constant...

Hello, I have been informed that there is no R package for the stratified Wilcoxon's rank sum test (Van Elteren's test) with the locally best weights. I need to use the alternative test to a clinical endpoint where...

LSD-test produces error for this code; code <- as.factor(Rotationdata_R$`Rot/code`) #factor in the main Nitrogen <- as.factor(Rotationdata_R$Nitrogen) #factor in the sub Rep <- as.factor(Rotationdata_R$REP) #blocks Year <- as.factor(Rotationdata_R...

Hello again, I am trying to create a color scale plotting the hydroathy index (y-axis) versus residue (x-axis) - each residue (1-100) has a value between 0-1. I've been trying to create a scale where: 0...

Hi folks, I have 25 stand height observations over 7 years period and daily leafbiomass data during this period. I want to use the 25 plant height observations as inputs and predict the daily stand height during the 7 years...

Hi every one ? I would like to compute MSE on out of sample forecast from GARCH model. I used rgrach package to obtain the estimated variance (sigma2.hat). then I run an out of sample forecast as forc = ugarchforecast(fit...

Hi Alexios, First I would like to thank you for such a package (rgarch). I downloaded the package from R-Froge, but it seems it is not updated as u said. However, since you are the right person to ask...

Is it possible to change the font size of attribute name in sppot? also the background color? Thanks Zia spplot(zn, c("a", "b", "c", "d"), names.attr = c("ordinary kriging", "universal kriging with dist to river", "stratified kriging with...

The model should be class aov or lm and my model class is aovlist. tried tidy from broom library but did not work. To make it class aov, I had to remove the error term; model <- aov(Rotationdata_R$`GY...

Hello all, I am having an unusual problem using gbif function of the dismo package. When I am using this code: acaule = gbif("solanum", "acaule*", geo=FALSE) this error appears: " http://data.gbif.org/ws/rest/occurrence/count?scientificname=solanum...

Dear All, I did OK and Gaussian simulations of 1000 realizations of my groundwater arsenic data after Box-cox transformation. From OK, I created a risk map of probability of exceeding 0.200 ppm of water arsenic by parametric approach...

I have an inquire about the RNG in R It is known that when we use the " rnorm " function , we pass the arguments : 1- number of variables to be generated 2- mean vector of the normal random errors. 3- standard...

Dear all, I have a matrix of repeating columns in R, for example a matrix X is [,1] [,2] [,3] [,4] [1,] 1 1 1 1 [2,] 1 1 2 2 I want to store unique columns of the matrix...

Hi, I have a dataframe "gexp_1" with 115 rows of samples and 27000 columns of gene expression measurements with each column corresponding to one gene. I now have a smaller vector of genes "tp" for which I need to...