Monthly Archives: September 2013

Python Variable Names

I learned today that in Python, variable names cannot start with a number. For example, this is an incorrect variable name: 1_AA_aa This could be used instead: AA_aa1

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Jan. 10 Wiki competition for Computational Biology articles

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Maximum Value in Subset

What was the maximum ozone value in the month of May (i.e. Month = 5)? Google “R subset data maximum value”: [1]  

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Subset data equal to one value

What is the mean of “Temp” when “Month” is equal to 6?

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Range of Data

Extract the subset of rows of the data frame where Ozone values are above 31 and Temp values are above 90. What is the mean of Solar.R in this subset? Google search: “R subset values in one column above threshold” … Continue reading

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