Comparing the coordinate lists

After calling this function, a dialog window is displayed which serves for statistic comparison of two coordinate lists. The test is performed according to the relations described in the Reg. No. 190/1996 Coll. The coordinate differences are calculated first.

dx = xm - xk, dy = ym - yk,

where xm, ym are the coordinates from the tested file and xk, yk are the coordinates from the reference file.

The position deviation and the bearing of the position deviation are calculated from these differences.

dp = (dx2 + dy2)1/2

The position deviation and the bearing of the position deviation are calculated from these differences.

Further, the mean deviation is calculated from the formula

up = [0.5 (dx2 + dy2)]1/2

The mean coordinate errors for the entire processed file are calculated from the formula

sx = [sum(dx2/(k . N))]1/2, sy = [sum(dy2/(k . N))]1/2,

where the k coefficient can be

Selective mean coordinate error

Sxy = (0.5 (sx2 + sy2))1/2

In the final statistic is, besides others written, what percentage of the points had uxy smaller than the required Uxy, (should be at least 60%), for what percentage of the points uxy in interval (Uxy, 2Uxy> and for what percentage 2Uxy overreached.