Pandas How To Uncategorized How to Plot a DataFrame using Pandas

How to Plot a DataFrame using Pandas

To plot a DataFrame using Pandas, you can use the plot() method. The plot() method is a powerful function that allows you to create a wide range of plots and charts from your data. Some of the most common types of plots you can create include line plots, bar plots, scatter plots, and histograms.

Here is an example of how to use the plot() method with a DataFrame:

import pandas as pd
import matplotlib.pyplot as plt

# create a sample DataFrame
data = {'year': [2010, 2011, 2012, 2013, 2014, 2015],
'sales': [100, 120, 130, 140, 150, 160]}
df = pd.DataFrame(data)

# plot a line chart
df.plot(x='year', y='sales', kind='line')

# show the chart

In this example, we first import the necessary libraries, Pandas and Matplotlib. We then create a sample DataFrame with two columns: year and sales. The plot() method is called on the DataFrame, and we specify the x and y columns to use for the plot, as well as the kind of chart to create, which is a line chart in this case. Finally, we call to display the chart.

Some technical terms that might be useful to know when working with Pandas and plotting data include:

  • DataFrame: A 2-dimensional labeled data structure with columns of potentially different types. It is similar to a spreadsheet or SQL table.
  • Series: A one-dimensional labeled array that can hold any data type. It is often used as a column in a DataFrame.
  • x-axis: The horizontal axis of a plot that shows the independent variable, such as time or distance.
  • y-axis: The vertical axis of a plot that shows the dependent variable, such as sales or temperature.
  • Line chart: A type of plot that displays data as a series of points connected by straight lines.
  • Bar chart: A type of plot that displays data as a series of bars of different heights or lengths.
  • Scatter plot: A type of plot that displays data as a collection of points, where each point represents a single observation and the location of the point is determined by the values of two variables.
  • Histogram: A type of plot that displays the distribution of a single variable by dividing the data into a set of intervals and counting the number of observations that fall into each interval.

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