The Matlab Writer supports writing Matlab .mat files.
The produced files have two variables, Dimensions and Points. Dimensions is a comma-delimited list of dimension names, and Points is a double array of all dimensions of every points. Note that this output array can get very large very quickly.
<?xml version="1.0" encoding="utf-8"?>
<Pipeline version="1.0">
<Writer type="writers.matlab">
<Option name="filename">
outputfile.mat
</Option>
<Option name="output_dims">
X,Y,Z,Intensity
</Option>
<Reader type="readers.las">
<Option name="filename">
inputfile.las
</Option>
</Reader>
</Writer>
</Pipeline>