modoc | an API documentation generator | REST library
kandi X-RAY | modoc Summary
kandi X-RAY | modoc Summary
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Top functions reviewed by kandi - BETA
- remove old cache from storage
- parse date handler
- convert time to seconds
- Returns the day of year with the given size .
- Save cache key
- creates a reduce function for array reduction
- Parse a URL
- Creates a date getter .
- Gets the week value of the given year .
- publish messages .
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Trending Discussions on modoc
QUESTION
I have preprocessed this a df containing info on US Emergency and Disaster history, to now contain the ```['Place, Disaster_type, Start_date, End_date Disaster_length, Year'] from 1960-2017.
Now, I would like to create 2 new dfs.
- = to the number of times a disaster occurred in each year,
- = to the number times each type of disaster occurred each year.
This is my current attempt at trying to calculate the number of disasters that happened each year and create a new df, but I'm not sure how to have it specifically count the number of disasters pear year.
...ANSWER
Answered 2021-Jul-10 at 21:05You can call size
on groupby
to get the counts.
QUESTION
I am currently trying to calculate the length of disasters, measured in days, and then with this column that is the difference between the start date and end date, use groupby ( I think), in order to sum the length of disasters for each year, as my data set is from 1960 to present. Eventually, I'd like to also group it by disaster type as well to see how the length of particular disasters changed overtime, but one step at a time.
So far I have converted the dates to pd.datetime format, and then used the code below to create the column with the difference of the two dates
...ANSWER
Answered 2021-Jul-07 at 11:36First change the column creation code to:
QUESTION
I have a data.frame with a column containing California counties in each cell separated by a space. I would like to add a comma and space after each one, however I can't just gsub every space into a comma and space, (i.e. gsub("\s",",\s",text)), as some counties in California have two names, (e.g. Los Angeles, San Francisco, etc.)
Fortunately, the two-word counties all have common first words so I'd like to write a gsub that preserves the space in those counties without adding a comma. I've attached example data as well as what I'd like the final form to look like. For instance, with this data, I'd like to add a comma and space except after "El", "San" and "Del".
Example data:
...ANSWER
Answered 2021-Jun-05 at 00:29Given that you know you are only looking for California counties, one "easy" way is just to replace only spaces that occur after a California county. To get that regex, I just concatenated the CA county names together with |
and added a space. The gsub
will replace any county name followed by a space with the same county name (\\1
), a comma, and a space.
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