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Date/Time: Fri, 09 May 2025 22:26:20 +0000



Post From: LINES THAT ARE DRAWN GET COLLAPSED INTO DOTS

[2015-12-14 16:32:31]
User41636 - Posts: 35
I think I see the problem. When your engineers set up charts, originally every day of the week is included. Am unclear about the timing, but at some point the chart space allotted to Saturdays gets deleted, along with the Sunday hours that don’t include trading. So taking, as an example, an S&P 500 futures chart running from 0830 to 1600 CT, by Monday 0830 CT the chart space that initially included the non-trading hours for Saturday December 12 and Sunday December 13 will have disappeared, and the charts will show no break in trading activity from Friday’s close to Monday morning’s open.

I used QCharts for years drawing such lines (not complaining here, as Sierra Chart is a much better product). There, fill space to the right was seemingly unlimited. Their charting setup may even have been programmed to exclude Saturdays. One could move ahead in time as far forward as required, skipping past any weekend and holiday non-trading periods, and draw lines on later-dated charts.

Present case. After the Friday, December 11 close, I attempt to draw lines on a fifteen-minute S&P 500 futures chart for Monday December 14. The lines are anchored on Friday. But there’s not enough fill space to include enough of December 14. So I hopefully draw lines in the chart area now (on Friday December 11) designated for Saturday December 12 (see Picture 1, taken on Friday December 11). ‘Hopefully’ because I realize this December 12 area will eventually disappear, yet I’m trusting that, through some coding magic, the December 12 date will be switched to December 14 and my lines will remain intact. Obviously I’m wrong. The December 12 charting area will indeed disappear – but will take the lines with it. By Monday 0830 CT the lines intended for December 14 will be reduced to dots located back on Friday’s chart (see green and black dots, Picture 2, taken on Monday December 14).

Conclusion: Owing to a lack of available fill space to the right, it looks as if it’s just not practicable to draw lines on projected charts whose dates come after weekends and holidays.

P.S. Sorry but I was not able to include pictures. I tried "Edit|Copy Chart Image" but it didn't work.