- pysteps.verification.spatialscores.fss(X_f, X_o, thr, scale)#
Compute the fractions skill score (FSS) for a deterministic forecast field and the corresponding observation field.
X_f (array_like) – Array of shape (m, n) containing the forecast field.
X_o (array_like) – Array of shape (m, n) containing the observation field.
thr (float) – The intensity threshold.
scale (int) – The spatial scale in pixels. In practice, the scale represents the size of the moving window that it is used to compute the fraction of pixels above the threshold.
out – The fractions skill score between 0 and 1.
- Return type: