script: plot profit

docs/plotting.md

@@ -3,6 +3,7 @@ This page explains how to plot prices, indicator, profits.
 
 ## Table of Contents
 - [Plot price and indicators](#plot-price-and-indicators)
+- [Plot profit](#plot-profit)
 
 ## Plot price and indicators
 Usage for the price plotter:
@@ -16,3 +17,32 @@ python script/plot_dataframe.py -p BTC_ETH
 The -p pair argument, can be used to specify what
 pair you would like to plot.
 
+
+## Plot profit
+
+The profit plotter show a picture with three plots:
+1) Average closing price for all pairs
+2) The summarized profit made by backtesting.
+   Note that this is not the real-world profit, but
+   more of an estimate.
+3) Each pair individually profit
+
+The first graph is good to get a grip of how the overall market
+progresses.
+
+The second graph will show how you algorithm works or doesnt.
+Perhaps you want an algorithm that steadily makes small profits,
+or one that acts less seldom, but makes big swings.
+
+The third graph can be useful to spot outliers, events in pairs
+that makes profit spikes.
+
+Usage for the profit plotter:
+script/plot_profit.py [-h] [-p pair] [--datadir directory] [--ticker_interval num]
+
+The -p pair argument, can be used to plot a single pair
+
+Example
+```
+python python scripts/plot_profit.py --datadir ../freqtrade/freqtrade/tests/testdata-20171221/ -p BTC_LTC
+```