How to obtain a value in one column based on another column?

How to obtain a value in one column based on another column?

If you have unique values in Column B i.e. there’s only one minimum value in the column, you can use following formula. Enter this formula in Cell C1: Or if you have a fixed range say till row 25, use following formula and change number of rows as required:

How to get unique values in one column?

The author is the index, and the single column is the list of all subreddits they are active in (this is how I interpreted how you wanted your output, according to your description). DataFrameGroupBy.agg (arg, *args, **kwargs): aggregate using one or more operations over the specified axis. Function to use for aggregating the data.

Is the Def column the same as the first two rows?

Example: In the below example first two rows has same value for first 3 columns.But they have different value for column DEF. So both these rows to be listed in output. But rows 2 and 4 has unique combination for first 3 columns but they have same values in DEF column.So not to be listed in output.

How to get a list of unique values in pandas?

I want to do the following: for each author, I want to grab a list of all the subreddits they have comments in, and transform this data into a pandas dataframe where each row corresponds to an author, and a list of all the unique subreddits they comment in. I am currently trying some combination of the following, but can’t get it down:

How to set value of column in pandas?

I need to set the value of one column based on the value of another in a Pandas dataframe. This is the logic: I am unable to get this to do what I want, which is to simply create a column with new values (or change the value of an existing column: either one works for me).

How to assign a value to a column in Excel?

First, you could create a new column c2, and set it to equivalent as c1, using one of the following two lines (they essentially do the same thing): Then, find all the indices where c1 is equal to ‘Value’ using .loc, and assign your desired value in c2 at those indices:

How to set the value of a third column in Excel?

I want to set the value of a third column, C, to the value of A corresponding to, say, the minimum value of B. Can I do this without writing a macro? As you see, no macro is required. If you have unique values in Column B i.e. there’s only one minimum value in the column, you can use following formula.

How to obtain minimum value in one column?

If you’ve repeating minimum value in Column B i.e. minimum value occurs more than one then try this array formula. Enter the formula in Cell C1 and drag it down till the row you want:

How to return the lowest value and return the adjacent cell in Excel?

2. With VLOOKUP function, you only can return the adjacent cell in the right column. 3. If the lowest values are duplicate in the column you want to find for lowest values, this formula will return the adjacent cell of first lowest value.

How to VLOOKUP a cell to the lowest value?

Select a cell you want to get the adjacent cell to the lowest value, and type this formula =INDEX (A2:A8,MATCH (MIN (B2:B8),B2:B8,0)), then press Enter key. See screenshot: 1. A2: A8 is the range that including the cell you want to return, B2: B8 is the range including the lowest value you want to find.