Hi,
where do the multiple uncertainty descriptions of sdatb-files come from? E.g.:

How do i group uncertainty descriptions in my matlab computations?
Definitions as scalars get me single tiers, e.g.:
a1 = unc(1, 0.1, 'RE_test_description_1')
a2 = unc(2, 0.2, 'RE_test_description_2')
a = [a1,a2]
b1 = unc(3, 0.3, 'IM_test_description_1')
b2 = unc(4, 0.4, 'IM_test_description_2')
b = [b1,b2]
c = a + 1i*b
unc_budget(c(1)-c(2))

Definitions with covariance as arrays get me 2 tiers:
a = unc([1,2], [0.1, 0; 0, 0.4], 'Re-test-description')
b = unc([3,4], [0.9, 0; 0, 0.16], 'Im-test-description')
c = a + 1i*b
unc_budget(c(1)-c(2))

How can I group influence descriptions into multiple >2 tiers?
Best regards
Philipp