How to run LIBSVM on MATLAB for the SVDD tool

I am a novice with LIBSVM and MATLAB.I want to use the LIBSVM tool to distinguish normal and abnormal data and I want to do it through MATLAB.

I tried to go through the README file provided for libsvm-3.18 but am not quite clear.

I have set of input files of type .txt ( the length and format of input files is equal and same) This is my normal data that I want to use for training my SVDD / SVM model. My test data will have both normal and abnormal data.

I understand I need to use svmtrain.c and svmpredict.c . However I have no clue how to call this code in MATLAB and run LIBSVM on MATLAB

1. Do i need to convert my .txt data to the LIBSVM format before I even use the LIBSVM code in MATLAB?

2. Can the svmtrain.c code from LIBSVM read the input files in sequence ?( i have a set of 100 txt files that I want to use as input ) How do i prepare the input for the svmtrain.c code to run in matlab?