M3: I just ventured over to Profit Finance and took a look at the "java charts". They are as I remembered them from the days they were used on StockCharts.Com....
Profit Finance "java charts" do not provide snap to anchor points and auto extend to the right. You have to approximate the first anchor point as close as possible and then drag the trend line across the chart window eyeballing the second anchor point. This makes the trend lines less accurate and over longer periods can result in trend lines being way off.
Most of the better charting programs provide "snap to" technology which allows the user to anchor exactly to the first and second anchor points and then have the program extend the plot to the right. Heck you can zoom way in, anchor your plots, extend the plot to the right and then zoom way back out. This allows for a much more accurate plot with no approximations on the users part. Of course, there are some minor inconsistencies depending on the program being used, time frames, longer time spans, etc.
Per TradeStation, the COMPX 2000 March Falling Resistance Line you are trying to plot was crossed back in 2003 Sept/Oct.
IMO, TradeStation has the most accurate plots I’ve come across, but they can be slightly off at times depending on how you shape your chart window. If you take the chart window to extremes, you can make longer-term trend lines vary a great deal, but viewing charts in a charting window that is shaped like a ruler is not likely anyone’s normal viewing method....gg
Regards,
LG