Monthly Archives: September 2013

Python Variable Names

Posted on September 28, 2013 by Lisa Johnson

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 http://en.wikibooks.org/wiki/Python_Beginner_to_Expert/Native_Types

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Jan. 10 Wiki competition for Computational Biology articles

Posted on September 28, 2013 by Lisa Johnson

https://en.wikipedia.org/wiki/Wikipedia:WikiProject_Computational_Biology/ISCB_competition_announcement_2013

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Maximum Value in Subset

Posted on September 27, 2013 by Lisa Johnson

What was the maximum ozone value in the month of May (i.e. Month = 5)? Google “R subset data maximum value”: [1] http://stackoverflow.com/questions/12350783/find-max-mean-min-of-the-a-subset-in-r  

Posted in Coursera, R | 1 Comment

Subset data equal to one value

Posted on September 27, 2013 by Lisa Johnson

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

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Range of Data

Posted on September 27, 2013 by Lisa Johnson

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 →

Posted in Coursera, R | 2 Comments