merge

merge(left, right, [how='inner'])

left and right are both indexed series, or are both indexed matrices.

how is a string indicating how to merge left and right. It can take the value of 'inner', 'outer', 'left', 'right', or 'asof'. The default value is 'inner'.

Merge 2 indexed series or 2 indexed matrices.

a = indexedSeries(2012.01.01..2012.01.04, 1..4)
b = indexedSeries([2012.01.01, 2012.01.03, 2012.01.05, 2012.01.06], 5..8)
merge(a, b);

merge(a, b, 'left');

m1 = matrix([1.2, 7.8, 4.6, 5.1, 9.5], [0.15, 1.26, 0.45, 1.02, 0.33]).rename!([2012.01.01, 2015.02.01, 2015.03.01, 2015.04.01, 2015.05.01], `x1`x2).setIndexedMatrix!()
m2 = matrix([1.0, 2.0, 3.0, 4.0], [0.14, 0.26, 0.35, 0.48]).rename!([2015.02.01, 2015.02.16, 2015.05.01, 2015.05.02], `y1`y2).setIndexedMatrix!()
m = merge(m1, m2, 'asof');