Hi all,
I'm new on Quantopian and I'm exploring its potential.
I wonder if is possible to perform some simple stats on the db.
Let's say for example that I want to calculate a 10 days close to close percent change on AAPL and then count how many time, historically, this percent change is greater than 5%.
I want result printed as a single number not as a bar by bar.
Any tips?
Thanks.
Max
I'm doing some test.
Few questions:
1) is there a way to count the number of data in a database? (ex how many rows has the AAPL db)
2) In your example you used the log function, but how do I calculate a simple difference between closes?
3) In the output is there a way to show the name of the security and the result (ex: AAPL = 1010)?
4) the same calculation could be done with more the one security (ex: an array with more symbols)?
5) is there a list of math and stat function to be used?
Sorry if my questions could appear silly but I don't have experience in python and I'm reading tutorials to understand this environment.
Thanks.
Max
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