Hi,

I wonder if it would be useful to add an option for one-sided statistics functions? That would be similar in spirit to the alternative param of the t.test function, with the two.sided option being the default.

There are about half a dozen places in the code where the sign of the difference between two CDFs is corrected:

    if (height < 0.0) {
      height = -1.0*height;
    }

whereas In the one-sided alternative the negative height would be simply set to zero.

Any thoughts?

Thanks!