DataLab is a compact statistics package aiming at exploratory data analysis. Please visit the DataLab Web site for more information.... 
Home Introduction Internal Data Structure  
See also: Concepts behind DataLab, Editing the Data, Basic Skills, Introduction, Help, Example Data


Internal Data StructureDataLab uses the following simple data structure: a matrix with p variables and n objects contains the data to be analyzed. In parallel to this matrix, five linear arrays are stored which contain the object names (length n), the variable names (length p), the class information (length n) and the levels of measurement of the variables and the attributes of the variables. Further a byte array of the same size as the data array contains state flags which indicate the state of the particular matrix cells. Finally, the comment is an unlimited string containing a userdefined description of the dataset.
