Tag: Apply
Posts of Tag: Apply
  1. Pandas dataframe If else with logical AND involving two columns

    How to add logical AND in a control statement involving two columns of a pandas dataframe i.e. This works: def getContinent(row): if row['Location'] in ['US','Canada']: val = 'North America' eli...Learn More
  2. Apply different functions to different items in group object: Python pandas

    Suppose I have a dataframe as follows: In [1]: test_dup_df Out[1]: exe_price exe_vol flag 2008-03-13 14:41:07 84.5 200 yes 2008-03-13 14:41:37 85.0 10000 yes 2008-03-13 14:41:3...Learn More
  3. Apply function to each cell in DataFrame

    I have a dataframe that may look like this: A B C foo bar foo bar bar foo foo bar I want to look through every element of each row (or every element of each column) and apply the ...Learn More
  4. Python equivalent of R apply with anonymous function

    In R this code works fine: denom <- matrix(c(0.1125588, 2.1722226, 0.5424582, 1.1727604,3.0524269 ,0.0524625 ,0.1752363 ,0.7198743,0.7282291 ,0.1646349 ,0.7574503, 2.3496857),3,4,byrow=TRUE) indexM &...Learn More
  5. Ant: How to echo the name of targetfile within apply

    I'm not really familiar with Ant and i wonder how to print the name of the current processed file to the commandline. This is what i have so far... It's a part of a macro which minifys files with the yui-compre...Learn More
  6. Python Pandas 'apply' returns series; can't convert to dataframe

    OK, I'm at half-wit's end. I'm geocoding a dataframe with geopy. I've written a simple function to take an input - country name - and return the latitude and longitude. I use apply to run the function and it re...Learn More
  7. Python function to add values in a Pandas Dataframe using values from another Dataframe

    I am a newbie in Python and I am struggling for coding things that seem simple in PHP/SQL and I hope you can help me. I have 2 Pandas Dataframes that I have simplified for a better understanding. In the first D...Learn More
  8. Pandas Apply returns matrix instead of single column

    This is probably a stupid question, but I have been trying for a while and I can't seem to get it to work. I have a dataframe: df1 = pd.DataFrame({'Type': ['A','A', 'B', 'F', 'C', 'G', 'A', 'E'], 'Other': [9...Learn More
  9. using aggregate in R when returning matrix

    I want to use aggregate to apply some manipulations to a set of matrices, grouped by the customer_id, which is one column of my dataframe, df. For example, I want to take the subsets of df that correspond to di...Learn More
  10. How do I apply unknown arguments to a function in Python 3.x?

    I'm developing my own GUI for my engine, and I've created an "object" called EwConsole (A simple "drop-down" console to input commands). In order to do that, I simply store an ID for the function to be "trigger...Learn More
  11. Apply a share function on row pandas DF

    I have the following df Array = np.array([[87, 70, 95], [52, 47, 44], [44, 97, 94], [79, 36, 2]]) df_test = pd.DataFrame(Array, columns=['Apple', 'Banana', 'Tomato'],index=[['Joe', 'Steve', 'Wes', 'J...Learn More
  12. Using an apply function on multiple subsets of a vector

    I've been scrounging around for a solution for this for a while, but there doesn't seem to be anything that can solve this seemingly simple problem I'm having. Long story short, I'm looking to run a function on...Learn More