ROC curves merge

This software draws ROC curves, merges them in one plot and computes the optimal cut from the data. The ROC curves can be obtained from many files with one or more measurement column, everything is merged.

Manual :

1- if not already installed, install R programming language.

2- install package ROCR : install.packages("ROCR")

3- unzip the software

4- copy your files in the “data” directory. Each file correspond to one or more ROC curve and must contain only one column of ID, group and at least one column of measurements. Very important : avoid spaces or special characters in files names. The files must be formated as follows :

- txt or csv files with TAB separator

- first line : column names

- first column : row names

- second column : label this column 'group' and the values should be 0 for one group and 1 for the other one.

- next columns : values with dot as decimal separator.

For clinical studies: patients are in lines and clinical criteria in columns

3- execute the software by the command : source("merge_ROC_curve-0.xx.r") in R

The number of data columns/files is used to compute the number of colors. It is better to overestimate this parameter if the number of columns is not the same in each file.

4- plot is in the "svg" directory and tables with AUC and optimal cut are in “results” directory.