Suppose the following trades happen
Trade 1: 100 BTC @ $75 Trade 2: 0.5 BTC @ $76 Trade 3: 100 BTC @ $77 Trade 4: 100 BTC @ $78 Trade 5: 100 BTC @ $78
Five individual trades occurred for a total of 400.5 BTC. There was a total of 200 BTC acting as a wall at $78. Similar to how I monitor the trade wall at mtgoxlive.com, I'd like to determine if the "wall moved" or if the "wall was eaten"/traded.
I'm trying to gather that information from the MtGox website and not sure if they display the count of individual trades, or the BTC sum.
Here, in the top level drop down menu
Volume:75584 BTC however in the drop down graph I see volumes that range in
3,000 total. In the most current example I see a volume
17,261 of something (either trades, or BTC, I'm not sure)
It seems that volume is measured in two ways, but with the same word:
The quantity of BTC shares (and fractional units) traded
The quantity of trades taken (a whole number)
Since MtGox seems to overload the meaning of "volume" in the two instances, where can I find a more accurate representation / graph of each interpretation of "volume"?