[R] Loop too slow for Bid calc - BUT cannot figure out how to do with matrix

[rivercode]

Duncan and Martin,

Thank you for your replies.

I went with Martin's suggestion as it did not require loops and is probably
the fastest...though it did take me 3 hours to figure out exactly how it was
working !!!

Here is what I am now using:

bids = cbind(bids, timeCalc)

orderBids = bids[order(bids$timeCalc),] # order bids on timeCalc col.

result = orderBids[c(diff(orderBids$timeCalc) != 0,TRUE),]  # get dataframe
with last bid for each second 

Thanks again for advice.

Chris

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