PM Procedure
Outputs variables to the standard output stream (logical file unit –1).
Usage
PM, expr1, ..., exprn
Input Parameters
expri — Expression to be output.
Keywords
Format — If not specified, PV-WAVE uses its default rules for formatting the output. Keyword Format allows the format to be specified in precise detail, using FORTRAN-style specifications.
Title — If present, specifies a character string to be used as the title of the output matrix. Only one title is printed, regardless of the number of expressions sent to PM.
Discussion
PM is intended as an alternative to PRINT, especially for cases where the output variable is to be interpreted as a matrix in the mathematical sense, i.e., a 2D array whose first index is to be associated with its rows. Storage in memory is always the same, but PM prints a 2D array like a mathematical matrix, whereas PRINT prints its transpose (useful if the array is to be interpreted as an image).
By using keywords, the form of the output matrix can be customized. Keyword Title can be used to specify a character string to be used as a title. Keyword Format is provided to allow for explicitly formatted output.
Example 1
This example shows the results from multiplying a (2,3) matrix by a (3,4) matrix.
a = FINDGEN(2,3) & PM, a
; PV-WAVE prints:
; 0.00000 2.00000 4.00000
; 1.00000 3.00000 5.00000
b = FINDGEN(3,4) & PM, b
; PV-WAVE prints:
; 0.00000 3.00000 6.00000 9.00000
; 1.00000 4.00000 7.00000 10.0000
; 2.00000 5.00000 8.00000 11.0000
c = a # b & PM, c
; PV-WAVE prints:
; 10.0000 28.0000 46.0000 64.0000
; 13.0000 40.0000 67.0000 94.0000
Example 2
In this example, a 2-by-3 matrix is read using the matrix-reading procedure RM and the results are printed using the matrix-printing procedure PM.
; Read in a 2-by-3 matrix.
RM, a, 2, 3
; PV-WAVE prints:
; row 0:
; Enter the following three numbers:
; 11 22 33
; PV-WAVE prints:
; row 1:
; Enter the following three numbers:
; 40 50 60
PM, a
; PV-WAVE prints:
; 11.0000 22.0000 33.0000
; 40.0000 50.0000 60.0000
See Also
See the PV‑WAVE Programmer’s Guide for more information.
