Getting Information on the PV-WAVE Session

The INFO procedure gives information about the PV-WAVE session.

Getting Information About the Session

Typing INFO, with no additional parameters, displays an overview of the current session, including one-line descriptions of all variables and the names of all compiled procedures and functions.

To obtain general information about the session, enter:

INFO

PV-WAVE returns information about variables, saved procedures and functions, area used for code and data, etc.

Getting Information on Specific Variables

To display information about a variable’s type and structure, add a comma (,) and the name of the variable. This makes the variable an argument to the INFO command, as is demonstrated next.

1.Define a 6-element array named vector to use as an example:

vector = [1, 2, 3, 4, 5, 6]

2. Display information on vector. Enter:

INFO, vector

PV-WAVE returns:

VECTOR      INT      = Array(6)

indicating vector is a 6-element integer array.

3. View both vector and the tripled value of each element, type:

PRINT, vector, 3*vector

PV-WAVE returns:

1 2 3  4  5  6

3 6 9 12 15 18

Information About System Variables

You can rapidly determine the settings of your system variables.

1.To print the values of system variables, type:

INFO, /System_Variables

The values of the system variables are returned to the screen.

2. To print the value of a single variable, you can use the PRINT command. To print the value of the !Pi system variable, type:

PRINT, !Pi

Looking at PV-WAVE Source Files

The following directories contain many examples of programs and applications written in the PV-WAVE command language (where <RW_DIR> is the name of the main product directory):

<RW_DIR>\docs\tutorial\code

<RW_DIR>\wave\lib\std

<RW_DIR>\wave\lib\user

As you begin to develop your own applications, you are free to examine these files and whenever possible use the code in your programs.