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Differentiate trendlines in log and arithmetic scales

Comments, critical feedback, praise, or suggestions for new features.

Postby Djobydjoba » Sat Apr 20, 2024 2:01 am

Hi Mark,

For long term trends it is advised to use the log scale. So with long term trendlines.
A trendline drawn in a log scale is irrelevant in an arithmetic scale and vice-versa. So the trendlines should be displayed only for the type of scale they have been drawn.

And, just for the fun, a nice trendline in log scale on the Apple chart.
https://i.ibb.co/3zGRXZk/20240420-sam-10h31-01.png

The same trendline cannot be drawn in the arithmetic scale
https://i.ibb.co/W5g6GgQ/20240420-sam-10h31-02.png
Djobydjoba
 
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Joined: Tue Mar 09, 2010 9:39 am

Postby Mark » Sat Apr 20, 2024 10:31 am

Hi Djobydjoba,

Okay, thanks for the feedback. FM currently just keeps track of the endpoints, and will plot those same endpoints on the graph, no matter the scale.
Thanks,
Mark
Fund Manager - Portfolio Management Software
Mark
Site Admin
 
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Location: Chandler, AZ

Postby Djobydjoba » Sun Apr 21, 2024 6:09 am

Yes, and this leads to incorrect trendlines when displayed in the other scale:

Trendline drawn in log scale:

TrendlineInLogScale.png
TrendlineInLogScale.png (25.53 KiB) Viewed 1956 times


Same trendline displayed in arithmetic scale:

SameTrendlineInArithmeticScale.png
SameTrendlineInArithmeticScale.png (26.36 KiB) Viewed 1956 times


As with currencies, that would be nice to hide the trendlines drawn with the other scale.
Djobydjoba
 
Posts: 794
Joined: Tue Mar 09, 2010 9:39 am


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