KmPlot uses a common way of expressing mathematical functions, so you should have no trouble working it out. The operators KmPlot understands are, in order of decreasing precedence:
The caret symbol performs exponentiation. e.g.,
- *, /
The asterisk and slash symbols perform multiplication and division . e.g.,
- +, −
The plus and minus symbols perform addition and subtraction. e.g.,
- <, >, ≤, ≥
Comparison operators. They return 1 if the expression is true, otherwise they return 0. e.g.,
1 ≤ 2returns 1.
The square root of a number. e.g.,
The absolute value of x. e.g.,
Each plus-minus sign gives two sets of plots: one in which the plus is taken, and one in which the minus is taken.e.g..
y = ±sqrt(1−x^2)will draw a circle. These, therefore, cannot be used in constants.
Note the precedence, which means that if parentheses are not used,
exponentiation is performed before multiplication/division, which is performed
before addition/subtraction. So
1+2*4^2 returns 33, and
not, say 144. To override this, use parentheses. To use the above example,
((1+2)*4)^2 will return 144.