Implement various trendline options (Linear, poly, exponential, log, power, moving average)

driscoll42 / ebayMarketAnalyzer

Scrape all eBay sold listings to determine average/median pricing, plot listings over time with trend lines, and extract to excel

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Implement various trendline options (Linear, poly, exponential, log, power, moving average) #32

Closed driscoll42 closed 3 years ago

driscoll42 commented 3 years ago

Is your feature request related to a problem? Please describe. A Linear trendline is not always the best choice, it would be useful to recreate the Excel options to make a trendline using

Exponential
Linear
Logarithmic
Polynomial (with different orders)
Power
Moving Average (with different periods)

This should be an option the user selects.

driscoll42 commented 3 years ago

Merging Issue #26 into this issue.

Hide Total Sold Line + trendline option #26 Is your feature request related to a problem? Please describe. The Total sold listings can make the plot look a bit dirty, and the trendline can be absolutely useless at times.

Describe the solution you'd like Add an option to suppress those lines

driscoll42 commented 3 years ago

Implemented: Moving Average (with different periods)

Linear Polynomial (with different orders)

Linear/Poly allow for Plotting into the future and print out the R^2 values

Not implementing. Both tricky to do, and... I don't think it's all that useful. If there's a desire someone open an issue.

Exponential Logarithmic Power