## How to compare one column's value to multiple values in other columns?

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I don't know how to ask this, so I made up an example. The goal is to compare the value of columns A & B to the values of C,D and E separately. If the value is the same or higher (>=) then return '1' else '0'.

```     A      B     C     D     E
1   101    103   100   101   99
2   102    100   101   99    103
3   100    99    103   100   98
```

The desired outcome would be this:

```A               B
C   D   E       C   D   E
1   1   1       1   1   1
1   1   0       0   1   0
0   1   1       0   0   1
```

Ideally I would like a function for this, what's the best way to approach this?

Direct compare `A` and `B` to `C, D, E`, and `concat` them together

```A = df[['C','D','E']].le(df[['A']].values).astype(int)
B = df[['C','D','E']].le(df[['B']].values).astype(int)

pd.concat([A,B], axis=1, keys=['A','B'])

Out:
A        B
C  D  E  C  D  E
1  1  1  1  1  1  1
2  1  1  0  0  1  0
3  0  1  1  0  0  1
```

Excel: Compare two columns for matches and differences, In the Duplicate Values dialog box, make sure 'Duplicate' is selected. Finding duplicate values in the same column is easy; you can sort or apply a filter depending on the circumstances. Finding duplicates that span multiple columns is a tad more difficult. A sort can

You can use with `le` which checks for every column if its equal or less than `A` and then `B`:

```cols = ['A', 'B']
compare = ['C', 'D', 'E']

for col in cols:
print(col)
df[compare].le(df[col], axis=0).astype(int)
```

output

```A
C  D  E
0  1  1  1
1  1  1  0
2  0  1  1
B
C  D  E
0  1  1  1
1  0  1  0
2  0  0  1
```

It would be more elegant to make a dict with the column names as key:

```cols = ['A', 'B']
compare = ['C', 'D', 'E']

dct = {col: df[compare].le(df[col], axis=0).astype(int) for col in cols}

print(dct['A'], '\n')
print(dct['B'])
```

output

```   C  D  E
0  1  1  1
1  1  1  0
2  0  1  1

C  D  E
0  1  1  1
1  0  1  0
2  0  0  1
```

Compare Two Columns in Excel (for Matches & Differences , How do I do a Vlookup to compare two columns? To compare two columns in Excel row-by-row, write a usual IF formula that compares the first two cells. Enter the formula in some other column in the same row, and then copy it down to other cells by dragging the fill handle (a small square in the bottom-right corner of the selected cell). As you do this, the cursor changes to the plus sign:

```compares = df[['A','B']].values[:,:,None] >= df[['C','D','E']].values[:,None, :]
compares = compares.reshape(len(df),-1)
pd.DataFrame(compares,
columns=pd.MultiIndex.from_product((list('AB'),list('CDE')))
).astype(int)
```

Output:

```   A        B
C  D  E  C  D  E
0  1  1  1  1  1  1
1  1  1  0  0  1  0
2  0  1  1  0  0  1
```

Compare Two Columns in Excel, Compare and highlight values that are in one column and not in the other column -- Find Duration: 6:17 Posted: 19 Oct 2019 Here are the steps to do this: Select the entire dataset. Click the ‘Home’ tab. In the Styles group, click on the ‘Conditional Formatting’ option. From the drop-down, click on ‘New Rule’. In the ‘New Formatting Rule’ dialog box, click on the ‘Use a formula to determine which cells to format’. In the

You could use pandas.DataFrame.apply

For example, in your case with `df` being this dataframe

```     A      B     C     D     E
1   101    103   100   101   99
2   102    100   101   99    103
3   100    99    103   100   98
```

you could perform the following operation to compare A to C,D and E:

```df[['C', 'D', 'E']].apply(lambda x: df['A'] >= x)
```

This will give you:

```C        D        E
True     True     True
True     True     False
False    True     True
```

With `True = 1` and `False = 0`. You could do the same to compare B to C,D and E. I hope this helps.

How to Compare 2 Columns with Excel? So Easy With Only 2 , 1. Display the duplicates in the first column (these values also occur in the second column). Compare Two Columns in Excel. Explanation: the MATCH function  VLOOKUP to Compare Two Columns in Excel & Find Matches. When it comes to comparing one thing with another in excel lookup functions are the kings and VLOOKUP is the household formula for all excel users.

How to Compare Two Columns in Excel, In the case of a comparison between two columns, it is the value #N/A that will interest us Duration: 4:20 Posted: 29 Feb 2020 First 2 arguments are the strings to be compared, and the last one is the comparison type. Note that the third argument is optional. If not omitted, the Option Compare setting will determine the type of comparison.

How to compare two columns to find duplicates in Excel, 1: Grab your free exercise file here! 2: Highlighting differences between columns. 3: Making a list of differences. 4: Compare columns quickly  Step 1: Select the cell D2, then Open the equal sign and select the first cell as B2. Step 2: Now again enter the equal sign after B2 and select the cell C2. Step 3: Once you hit enter it will show either TRUE or FALSE. If the value in the cell B2 is equal to the value in the Step 4: Drag and

How to Compare Two Columns in Google Sheets and Excel, Find duplicate values in two columns. 1. Click on the Column Header to highlight Column A. Highlight column  Click Kutools > Select > Select Same & Different Cells, see screenshot: 2. In the Select Same & Different Cells dialog box, please do the following operations: (1.) Select the two ranges that you want to compare from the Find values in and According to boxes separately; (2.) Select Each row under the Based on section;