Returns an accumulator function which incrementally computes the mean error.
accumulator function
var accumulator = incrme();
var m = accumulator();
// returns null
m = accumulator( 2.0, 3.0 );
// returns 1.0
m = accumulator( -5.0, 2.0 );
// returns 4.0
m = accumulator();
// returns 4.0
If provided input values, the accumulator function returns an updated mean error. If not provided input values, the accumulator function returns the current mean error.
Notes
NaN
or a value which, when used in computations, results inNaN
, the accumulated value isNaN
for all future invocations.input value
input value
mean error or null