input:
> values
[1] 0.854400 1.648465 1.829830 1.874704 7.670915 7.673585 7.722619
> thresholds
[1] 1 3 5 7 9
expected output:
[1] 1 4 4 4 7
That is, need a vector of indexes of the maximum value below the threshold.
e.g.
First element is "1", because value[1] is the largest below threshold "1".
Second element is "4", because value[4] is the largest below threshold "3".
The way I do it is:
sapply(1:length(threshold), function(x) { length(values[values <
threshold[x]])})
[1] 1 4 4 4 7
It just seem to me too long and stupid to be like R. Is it already the best way?
Somehow I feel which() was designed for a purpose like this, but I couldn't
figure out a way to apply which here.
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