C.2. - calc.4
Calc.4 is a general-purpose user function for manipulating your current data or creating new data.
fn calc.4 fn calc.4 expression [; expression ...] or fn . .
Calc.4 uses a grammar consisting of vector names (x, y etc.), variable names (upper-case letters), arithmetic operators (+, -, =, etc.), and function names (
sin(), sqrt(), log(), etc.).
The arithmetic expressions you enter are performed
for each point in the current data.
For instance, if you enter an
expression such as
y = 2 * x,
the value of each
y
in
your data set will be replaced with twice the value of the corresponding
x.
Syntax rules and examples follow.
- C.2.1. - Lower-case letters
C.2.2. - Upper-case letters
C.2.3. - Operators
C.2.4. - Functions
C.2.5. - Other things
C.2.6. - Error handling
C.2.7. - Examples