TA, QCharts doesn't differentiate time-periods much. I.e., you just specify whether you want bars as ticks, minute bars, daily bars, monthly bars and it just downloads the data. (Actually, you can specify that you want 3 minute bars. It's not listed in the drop-down, but you just enter the value.) Then after the first data is down-loaded, you just scroll to the left to get earlier time periods. As you scroll, it just downloads more data. Pretty quick too.
Also, Quote.com cleans up the data. If you have a bad tick, they clean up the tick within about a minute. The portion of a price that results from bad ticks or suspected bad ticks is displayed in yellow and does NOT affect the y-axis range. For instance, you are looking at a chart where the price varies from 100 to 105, with a current price of 105. Then you get a bad tick where the price is say, "2,000". Your y-axis stays at 100 to 105. It does NOT change from 100 to 2,000. Any visible portion of a bar resulting from the bad tick turns to yellow.
The bad tick scenario happened to me with DTNIQ. When I called, they said that they would fix the data if a customer called them!!! My response was, "That's B*ll S**T"! I dropped them.
Regards,
Dan. |
