An installation of PDL usually comes with an interactive shell known as perldl, which can be used to perform simple calculations without requiring the user to create a Perl program file. A typical session of perldl would look something like the following:
perldl> $x = pdl, ]; perldl> $y = pdl, ]; perldl> $z = $x x $y; perldl> p $z; [ ]The commands used in the shell are Perl statements that can be used in a program with PDL module included. x is an overloaded operator for matrix multiplication, and p in the last command is a shortcut for print.
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