In Matlab I can do, for example, with "daynum" fractional day numbers:
idaynum = floor(daynum); [umjd, im, iu] = unique(idaynum); % <= how do I get the "iu" in Julia? % I need an observation "pms" listed per day in a file. % For performance reasons the parameter is retrieved from the file only once for each of the different integer days upms = pi*umjd; % <= for illustration only, instead of really retrieving the observed parameter pms = upms(iu); % Now "pms" matches "daynum", ie. when daynum=[1.0, 1.5, 1.8, 2.0, 2.2, 3.1 ], then pms approx. [3.14, 3.14, 3.14, 6.28, 6.28, 9.42] Probably this can be done elegantly also in Julia, but, coming from Matlab, for me not easy to see how?
