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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
...to designate missing values. As I iterate over the data set, I need to detect such missing values and handle them in special ways.
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Evaluate if list is empty JSTL
...to evaluate if this array list is empty or not but none of these have even compiled:
2 Answers
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Convert unix time to readable date in pandas dataframe
I have a dataframe with unix times and prices in it. I want to convert the index column so that it shows in human readable dates.
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How to do a less than or equal to filter in Django queryset?
I am attempting to filter users by a custom field in each users profile called profile. This field is called level and is an integer between 0-3.
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Unittest setUp/tearDown for several tests
Is there a function that is fired at the beginning/end of a scenario of tests? The functions setUp and tearDown are fired before/after every single test.
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Get all git commits since last tag
When I'm going to tag a commit, I need to know what changed since the last tagged commit. Eg:
2 Answers
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dplyr: “Error in n(): function should not be called directly”
I am attempting to reproduce one of the examples in the dplyr package but am getting this error message. I am expecting to see a new column n produced with the frequency of each combination. What am I missing? I triple checked that the package is loaded.
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Use ffmpeg to add text subtitles [closed]
I am trying to add text subtitles to an .mp4 container using ffmpeg:
9 Answers
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Subscripts in plots in R
I can't find a way how to write subscripts in the title or the subtitle in R.
How can I write v 1,2 with 1,2 as subscripts?
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How to get min/max of two integers in Postgres/SQL?
...(or minimum) of two integers in Postgres/SQL? One of the integers is not a column value.
2 Answers
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