After ROC analysis of a set of data, how to calculate p-value? With the same statistics, I saw that the p-value can be output in SPSS. The sample code is as follows: library(pROC) data(aSAH) head...

I have a dataframe with two columns : score1 which is numeric and truth1 which is boolean. I want to predict truth1 using score1. To do that, I want a simple linear model, and then ask for a good t...

I want to draw ROC curves with pRoC. However for some reason there is extra empty space on either side of the x-axis and I cannot remove it with xlim. Some example code: library(pROC) n = c(4, 3, ...

I am using the following code to plot the ROC curve after having run the logistic regression. fit1 <- glm(formula=GB160M3~Behvscore, data=eflscr,family="binomial", na.action = na.exclude) prob...

I want to create a roc object by using the function 'roc' of pROC package in R, and plot the roc object. However, I am uncertain what the 'direction' argument does. the median predictor values of m...

When I use multiclass.roc function in R (pROC package), for instance, I trained a data set by random forest, here is my code: # randomForest & pROC packages should be installed: # install.pack...