matplotlib / matplotlib/mplfinance
mplfinance warn if user passes an empty data set.
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Description
Hi everyone I got this error while trying to achive a graph with signal markers...
if I add a scatter plot I get this error:
E ValueError: zero-size array to reduction operation maximum which has no identity
initially I thought to be my fault... but then I tried some examples out there and all behaves the same.
You can try executing those examples to see the error
https://code.luasoftware.com/tutorials/algo-trading/mplfinance-plot-marker-on-price-chart
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Research direction
Reproduce the error using the examples at https://code.luasoftware.com/tutorials/algo-trading/mplfinance-plot-marker-on-price-chart, especially when adding a scatter plot with an empty data set. Trace the plotting path that reaches the zero-size array reduction and make the behavior provide a warning for empty input instead of raising this ValueError.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- data-visualization
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100