bug in bitcoincharts.com chart software?

[gimme_bottles]

i just compared these two pictures and noticed a little something:

Picture 1: 2 day closing price on mtgoxUSD, 5-min interval


Picture 2: 2 day closing price on mtgoxUSD, 15-min interval


notice, in the 5-min interval picture you see a 5.5k dump at 12:00pm, but in the 15-min interval it is shown as a 5.5k buy.

[goldmar]

It might be a little glitch in the software but it does not really matter, because:

A "dump" (sell) is also a "buy" at the same time. People tend to overlook this, but there are always two sides to any trade.