 Usage:  setmaskp(data, color_num, art_num, size)  
 
 Input:

  data                   (n x p) datamatrix 
                         
  color_num              either a scalar integer (all points of the datamatrix get the color associated 
                         with that integer) or a (n x 1) vector of integers (each point gets the color 
                         associated with the integer in the corresponding row); 
                         0 is black, 
                         1 is blue, 
                         2 is green, 
                         3 is cyan, 
                         4 is red, 
                         5 is magenta, 
                         6 is yellow, 
                         7 is white. 
                         &nl; 
                         In case you want to use RGB colors, create them first with the command createcolor. Then color_num has to be given either as a 1x3 vector of integers (all points get the same RGB color associated 
                         with the 3 integers) or a (n x 3) vector of integers (each point gets the RGB color 
                         associated with 3 the integers in the corresponding row) 
                         
  art_num                either a scalar integer (all points of the datamatrix get represented by the symbol associated 
                         with that integer) or a (n x 1) vector of integers (each point gets represented by the symbol 
                         associated with the integer in the corresponding row); 
                         0 is empty, 
                         1 is a point, 
                         2 is a rectangle, 
                         3 is a circle, 
                         4 is a triangle, 
                         5 is a X-symbol, 
                         6 is a rhombus, 
                         7 is a filled rectangle, 
                         8 is a filled circle, 
                         9 is a filled rhombus, 
                         10 is a filled triangle, 
                         11 is a cross, 
                         12 is a star, 
                         13 is a grid, 
                         14 is a different cross 
                         
  size                   either a scalar integer (all points of the datamatrix get the size associated 
                         with that integer) or a (n x 1) vector of integers (each point gets the size 
                         associated with the integer in the corresponding row); 
                         size may be one of the following integers: 0 ... 15; the default size is 8. 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
