Highlight the maximum value in each column in Pandas
Let’s discuss how to highlight the maximum values in Pandas Dataframe. Lets first make a dataframe:
Example:
# Import Required Librariesimport pandas as pdimport numpy as np # Create a dictionary for the dataframedict = {'Name': ['Sukritin', 'Sumit Tyagi', 'Akriti Goel', 'Sanskriti', 'Abhishek Jain'], 'Age': [22, 20, 45, 21, 22], 'Marks': [90, 84, 33, 87, 82]} # Converting Dictionary to Pandas Dataframedf = pd.DataFrame(dict) # Print Dataframedf |
Output:
Now, come to the highlighting part. Our objective is to highlight cells with maximum values in each column.
Method 1: Highlighting Cell with maximum value in each column
We will do this by using the highlight_max() method of DataFrame property. highlight_max() method takes 3 arguments, subset = name of the columns of which you want to find the maximum, color = name of the color with which you want to highlight the cell and axis = (0/1) based on which axis you want find the maximum.
- Python3
# Highlighting the maximum values of# last 2 columnsdf.style.highlight_max(color = 'lightgreen', axis = 0) |
Output:
Method 2: Highlighting the text instead of cell
- Python3
# Defining custom function which returns # the list for df.style.apply() methoddef highlight_max(s): is_max = s == s.max() return ['color: green' if cell else '' for cell in is_max] df.style.apply(highlight_max) |
Output:
Method 3: Highlighting cell with maximum values
- Python3
# Defining custom function which returns # the list for df.style.apply() methoddef highlight_max(s): is_max = s == s.max() return ['background: lightgreen' if cell else '' for cell in is_max] df.style.apply(highlight_max) |
Output:
Method 4: Highlighting cell with maximum values but not highlighting the string values
- Python3
# Defining custom function which returns# the list for df.style.apply() methoddef highlight_max(s): if s.dtype == np.object: is_max = [False for _ in range(s.shape[0])] else: is_max = s == s.max() return ['background: lightgreen' if cell else '' for cell in is_max] df.style.apply(highlight_max) |
Output:
Last Updated on October 23, 2021 by admin