[GRASS-dev] r.regression.line crash in awk (awk debugging)

[Hamish]

Markus Neteler wrote:
> echo "345.551054 1 1
> 364.229489 1 1
> 382.907925 1 3" | awk ...
....
>       R     = (sumXY - sumX*sumY/tot)/((sumsqX - sumX^2/tot)*(sumsqY -
> sumY^2/tot))^0.5;

sumsqY = 5
sumY = 5
tot = 5

thus (sumsqY - sumY^2/tot))^0.5  = 0


Hamish