REPORT -- Similar to VIEW, but the display is written to a separate file that 

 is suitable for printing. The display is also more informative than that 

 of VIEW because: 



(1) labels are written along with data points; 



(2) an optional title is provided; 



(3) the program performs report paging; and 



(4) marginal totals can be reported (at user option). 



SUBMATRIX -- Extracts a user-specified subsection of a larger matrix. A new 

 matrix file (complete with labels) is created containing only the selected 

 portion. 



MERGE -- Combines two existing matrices into one, with the following 

 restrictions: 



(1) Both matrices must have the same missing-value code; 



(2) At least two dimensions of the matrices must be equal (e.g., 

 each matrix has 25 rows and 3 planes). 



A new matrix file (complete with labels) is created. 



TRANSPOSE -- Reorients the dimensions of a matrix in one of 2 ways: 



(1) interchanging the rows, columns, or planes; 



(2) making a three-dimensional matrix into two dimensions. 

 A new matrix file (complete with labels) is created. 



STATISTICS -- Computes and (optionally) displays matrix marginal statistics 

 including total, mean, standard deviation, number of missing points, and 

 number of nonzero values. Statistics can be computed for either rows or 

 columns over all planes or a selected plane. A matrix file (suitable for a 

 MERGE operation) can also be produced if row statistics (all planes) have 

 been selected. 



TRANSFORM -- Allows a user to perform data transformation (e.g., log, square 

 root, unit conversion) and/or standardization (i.e., to mean = 0, st. dev. 

 = 1). Also permits computation of linear combinations of variables. 



PREPARE FOR PACKAGE -- Strips a matrix file of label and header information. 

 This function leaves a file containing data points only, which is the most 

 convenient form of input to the BMDP, SPSS, and MINITAB statistical 

 packages. 



GRAPHICS — Prepares matrix row or column data for the EZGRAF graphics system. 

 A series of EZGRAF "EN"ter data commands are generated and written to a 

 file (which is saved) suitable for EZGRAF entry with the "RUN" command. 



MAPPING -- Prepares matrix data for spatial mapping with the SYMAP system. 

 Matrix columns must correspond to predefined spatial locations (i.e., 

 stations). The user selects which matrix rows are to be mapped. 



SUBSAMPLE SPECIES — A very specialized function, which performs "soecies 

 accumulation" according to the method described by Livingston et al. (1^76) 

 and "rarefaction" according to the method of Simberloff (1^78). 



MENU — Displays a "full" menu of available system operations (descriptions of 

 options are more complete). 



END -- Terminates the MATRIX program system and returns the user to interactive 

 communication with the operating system (NOS). 



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