N-day chart problems
Posted: 30 Jun 2008
I know you know that there are problems with the n-day charts, and I know they're on your "to fix" list, but I thought it might be helpful to post a picture illustrating some of the issues.
Attached is a chart (screen grab and workspace) showing EURUSD in the 1-day scale, and each of the possible 3-day permutations on the same horizontal axis.
What I'd expect to see is a set of evenly-spaced candles in each 3-day chart. In fact - even ignoring the daylight-saving glitch that causes the daily bars to be double-spaced in the winter months, the bars are spaced unevenly. The nominally 3-day charts all consist of a jumble of 1, 2, and 3-day bars.
The problem appears to stem from the 3-day charts using a 7-day week (and counting Saturday and Sunday as two working days) while the daily chart excludes the weekends. In any case, it means that the n-day charts don't really make any sense, because the horizontal axis of any single chart isn't linear.
Attached is a chart (screen grab and workspace) showing EURUSD in the 1-day scale, and each of the possible 3-day permutations on the same horizontal axis.
What I'd expect to see is a set of evenly-spaced candles in each 3-day chart. In fact - even ignoring the daylight-saving glitch that causes the daily bars to be double-spaced in the winter months, the bars are spaced unevenly. The nominally 3-day charts all consist of a jumble of 1, 2, and 3-day bars.
The problem appears to stem from the 3-day charts using a 7-day week (and counting Saturday and Sunday as two working days) while the daily chart excludes the weekends. In any case, it means that the n-day charts don't really make any sense, because the horizontal axis of any single chart isn't linear.