SDPPL Pipeline constructor DESCRIPTION Pipeline is a sequence of data operations such as feature extraction or classifiers. Pipelines are always executed through libPRSD C-based library and may be run independently of Matlab in custom applications. SDPPL is a low-level constructor. High-level creation of pipelines is available through functions such as SDLINEAR or SDPCA training a specific algorithm on data. Pipelines may be also constructed directly by supplying the algorithm parameters trained externally. This is done using functions with SDP_ prefix such as SDP_NORMAL or SDP_AFFINE.