Pandas find max value in column. If you want the index of the maximum, use idxmax.
Pandas find max value in column max(axis=0, skipna=True, numeric_only=False, **kwargs) [source] # Return the maximum of the values over the requested axis. 1 Without considering the time_normalised condition, I can do this: To find the maximum value of a column and to return its corresponding row values in Pandas, we can use df. The resulting DataFrame looks like this: Name Subject Score 6 Grace Maths 91 5 Frank Science 94 Using groupby () and apply () Another method to find the row with the maximum value in a column from Pandas Dec 7, 2015 · The most straightforward and efficient way is to convert to absolute values, and then find the max. Assuming df has a unique index, this gives the row with the maximum value: Note that idxmax returns index labels. So if the DataFrame has duplicates in the index, the label may not uniquely identify the row, so df. How do I find all rows in a pandas DataFrame which have the max value for count column, after grouping by ['Sp','Mt'] columns? Example 1: the following DataFrame: Sp Mt Value count 0 MM1 S Jun 5, 1996 · It's often helpful to know a few specific values for each column (aka variable) in a DataFrame -- mainly the highest value, lowest value, and all unique values. Syntax: dataframe. Feb 5, 2017 · How to get the highest value in one column for each unique value in another column and return the same dataframe structure back. Apr 1, 2013 · Find row where values for column is maximal in a pandas DataFrame. This solution generalizes idxmax(1); in particular, if the max values are unique in each row, it matches the idxmax(1) solution. Method 1 - Using Max () We can apply the max function on a Pandas series to get the first highest value. max() Syntax Get maximum values in every row & column of the Dataframe Get maximum values of every column Get maximum values of every row Get maximum values of every column […] Apr 20, 2014 · How do I get the min and max Dates from a dataframe's major axis? value Date 2014-03-13 10000. I have tried like below df['i. 000 2014-03-27 2000. nr counter va Jul 23, 2025 · Getting the First (Highest/Largest) Value The simplest task is to get the highest value in a column. Dec 6, 2024 · In pandas, you can find the maximum value in a DataFrame using the max() function. Aug 29, 2012 · By specifying the column axis (axis='columns' or axis=1), the idxmax () method returns a Series with the index of the maximum value for each row. max (axis=0) Mar 5, 2024 · Problem Formulation: When working with data in Python’s Pandas library, it’s a common task to find the maximum value within a DataFrame column and extract the entire row that contains this maximum value. Jan 8, 2023 · I am a beginner to Data Analysis using Python and stuck on the following: I want to find maximum value from individual columns (pandas. DataFra Nov 24, 2024 · In Pandas, you can find the row values for the maximum value in a specific column using the idxmax() function along with the column selection. Return the index of the maximum over the requested axis. max # DataFrame. Nov 6, 2024 · Exploring Effective Methods to Find Maximum Values in a DataFrame using Pandas When working with datasets in Python Pandas, it’s common to need to identify the maximum value of a specific column and retrieve the associated row entries. Jun 19, 2023 · Here, idx is a Pandas Series that contains the row index of the maximum value for each group. Jul 23, 2025 · Output: Example 2: Get the maximum value in column To get the maximum value in a column simply call the max () function using the axis set to 0. 000 2014-03-21 2000. I have a data frame in pyspark. Mar 4, 2024 · Specifically, finding the maximum value of a column in a Pandas DataFrame is a common task. Step 2: Find the Index of Maximum Weight idxmax () returns the row index where the column has its maximum value. abs(). We then use loc [] to select the rows with these indices to get the maximum scores for each group. In this article, we will explore how to accomplish this using Pandas in Python 3. read_csv (): loads the dataset as a pandas dataframe df. org Jul 14, 2025 · Find the maximum value in a specific column. Jul 11, 2022 · This tutorial explains how to return the row that contains the max value in a particular column, including examples. Find the value in a different column within that same row. You can use the pandas max() function to get the max value in a given column, multiple columns or the entire dataframe. Parameters: axis{index (0), columns (1)} Axis for the function to be applied on. One common task in data analysis is finding the maximum value in a column and returning the corresponding row values. max() will give me the maximal value for each column, I don't know how to get the corresponding row. This is a useful way to quickly analyze and compare the maximum values for all columns in a DataFrame. DataFrame. This process can be executed using several distinct methods, each offering a unique approach. Jul 15, 2025 · To find the maximum value of each column, call the max () method on the Dataframe object without taking any argument. 000 Mar 31, 2024 · Pandas: Find maximum values & position in columns or rows of a Dataframe | How to find the max value of a pandas DataFrame column in Python? March 31, 2024 by Prasanna Dec 13, 2024 · Finding the maximum value in a DataFrame is just one of the many operations that can be performed using Pandas. Nov 12, 2023 · In Pandas, you can find the maximum value of any column by using the max () method. ndarray method argmax. You can Dec 8, 2018 · Pandas: Find the max value in one column containing lists Asked 6 years, 10 months ago Modified 6 years, 10 months ago Viewed 8k times Feb 16, 2023 · This tutorial explains how to find the max value in each row of a pandas DataFrame, including an example. max() max() accepts an axis argument, which can be used to specify whether to calculate the max on rows or columns. Apr 28, 2015 · 1: idxmax(1) returns only the first column name with the max value if the max value is the same for multiple columns, which may not be desirable depending on the use case. Discover how to efficiently find maximum values and their positions in columns and rows of a Pandas DataFrame with this comprehensive guide. This function can be applied to either rows or columns. This method takes the column as an argument and returns the maximum value of that column. Aug 3, 2022 · This tutorial explains how to find the max value across multiple columns in a pandas DataFrame, including several examples. DataFrame. Apr 30, 2015 · I am looking for a way to get both the index and the column of the maximum element in a Pandas DataFrame. Jul 15, 2024 · Pandas is a powerful data manipulation library in Python that provides various functions to work with structured data. In this article, we will discuss how to find maximum value & position in rows or columns of a Dataframe and its index position. Apr 18, 2012 · How can I find the row for which the value of a specific column is maximal? df. Apr 22, 2016 · I wish to create a new column, free_capacity and set it as the maximum value of Volume, per ID, when time_normalised is less than or equal to 1. Pandas supports this with straightforward syntax (abs and max) and does not require expensive apply operations: df. loc [df [col]. For example, given a DataFrame representing sales data, you might want to identify the maximum sale amount in a particular column. If there are multiple columns with the value, then either returning the list of all colum Dec 9, 2020 · This tutorial explains how to find the max value by group in a pandas DataFrame, including several examples. Copy that value to a new column in your DataFrame. Locate the entire row where that maximum value is found. In the output, We can see that it returned a series of maximum values where the index is the column name and values are the maxima from each column. Definition and Usage The max() method returns a Series with the maximum value of each column. Fortunately you can do this easily in pandas using the max () function. By specifying the column axis (axis='columns'), the max() method searches column-wise and returns the maximum value for each row. See full list on pythonexamples. Here is a pandas dataframe example? reg. For Series this parameter is unused and defaults Jul 29, 2020 · Often you may be interested in finding the max value of one or more columns in a pandas DataFrame. Apr 12, 2024 · A step-by-step illustrated guide on how to find the length of the longest string in a DataFrame column in multiple ways. Finding the Maximum Value To find the maximum value in a Pandas DataFrame, we can use the max() method provided by Pandas. Let's take an example to understand it better. This can be done using the max() function or by sorting the columns in descending order and selecting the top value. If you want the index of the maximum, use idxmax. You can use a combination of the pandas loc property, the idxmax() and the idxmin() functions to get rows with maximum and minimum column values. head (10): prints the top 10 rows of the dataframe. Now I want to find the maximum value of the column id in the data frame. This is the equivalent of the numpy. idxmax ()]. pandas. Jul 27, 2020 · Find the max value in the column Age To find the maximum value in the column Age, a solution is to use the pandas function max: Jul 11, 2025 · Output: Select row with maximum value in Pandas Dataframe Example 1: Shows max on Driver, Points, and Age columns. Dec 18, 2021 · I want to find not just the max value in a dataframe row, but also the specific column that has that value. Jul 19, 2022 · In this tutorial, learn how to find the maximum element in a Pandas DataFrame for columns, rows and the entire DataFrame, using Python. This method returns the maximum value for each column in the DataFrame. Let's use the sample data you provided to walk through the solution. loc may return more than one row. Dec 5, 2024 · How to Retrieve Rows with Maximum Values in Grouped DataFrames using Pandas When you are working with Pandas, a common data manipulation task is to find rows in a DataFrame that contain the maximum value for a particular column, after grouping by certain columns. dataframe) using Broadcasting Sep 25, 2025 · Output: Explanation: pd. Thus far, this is my code: idx = range(0, 50, 5) col = range(0, 50, 5) scores = pd. In the case of the example code, it fills a new column with a column name. In this data frame I have column called id that is unique. dv jxwiy x3kiltjo mnhmah yyq1 cwaqkd xtzpf5 p4dw6rp eebqf0 pws0tx