# Solved: matplotlib boxplot change size of outliers

The main problem related to matplotlib boxplot change size of outliers is that it can distort the visual representation of the data. Outliers are points that lie outside the range of normal values, and they can be important indicators of trends or anomalies in a dataset. By changing their size, it can make them appear more or less significant than they actually are, which can lead to incorrect conclusions about the data.

```
import matplotlib.pyplot as plt

# Create data
data = [1, 2, 3, 4, 5, 6, 7]
outliers = [10]
all_data = data + outliers

# Change the size of the outliers with the s keyword argument
plt.boxplot(all_data, sym='o', s=100)

# show plot
plt.show()```

1. import matplotlib.pyplot as plt: This line imports the matplotlib library and assigns it to the alias ‘plt’.
2. data = [1, 2, 3, 4, 5, 6, 7]: This line creates a list of data points.
3. outliers = [10]: This line creates a list of outlier values.
4. all_data = data + outliers: This line combines the two lists into one list called ‘all_data’.
5. plt.boxplot(all_data, sym=’o’, s=100): This line creates a box plot using the ‘all_data’ list and sets the symbol for the outliers to an ‘o’ with size 100 (s=100).
6. plt.show(): This line displays the box plot on screen

## Boxplots tools

Boxplots are a popular way to visualize data in Python. They are used to quickly summarize distributions of data by showing the median, quartiles, range, and outliers. The Python library matplotlib provides a wide variety of tools for creating boxplots. These include functions like boxplot(), which creates a basic boxplot from an array of values; and violinplot(), which creates a violin plot from an array of values. Additionally, there are several libraries that provide additional features for creating more complex boxplots such as Seaborn and Plotly.

## Matplotlib library

Matplotlib is a plotting library for the Python programming language and its numerical mathematics extension NumPy. It provides an object-oriented API for embedding plots into applications using general-purpose GUI toolkits like Tkinter, wxPython, Qt, or GTK+. There is also a procedural “pylab” interface based on a state machine (like OpenGL), designed to closely resemble that of MATLAB, though its use is discouraged. Matplotlib can be used in Python scripts, the Python and IPython shells, the Jupyter notebook, web application servers, and four graphical user interface toolkits.

Matplotlib produces publication-quality figures in a variety of hardcopy formats and interactive environments across platforms. Matplotlib can be used in Python scripts to create graphs and charts with just a few lines of code. It supports various types of graphs such as line plots, bar charts, scatter plots etc., as well as 3D plotting capabilities. It also has built-in support for exporting figures to various file formats such as PDFs or SVG files.

## How do I increase boxplot size in matplotlib

To increase the size of a boxplot in matplotlib, you can use the figsize parameter when creating the figure. This parameter takes a tuple of two values, which represent the width and height of the figure in inches. For example, to create a figure with a width of 8 inches and a height of 6 inches, you would use:

fig = plt.figure(figsize=(8,6))