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Tag: data visualization

How to Change the Size of Seaborn Plots

Erik Marsja
December 22, 2019
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How to Change the Size of Seaborn Plots

In this short tutorial, we will learn how to change the figure size of Seaborn plots. For many reasons, we may need to either increase the size or decrease the size, of our plots created with Seaborn.

When do We Need to Change the Size of a Plot?

One example, for instance, when we might want to change the size of a plot could be when we are going to communicate the results from our data analysis. In this case, we may compile the descriptive statistics, data visualization, and results from data analysis into a report, or manuscript for scientific publication.

FacetGrid Plot

Here, we may need to change the size so it fits the way we want to communicate our results. Note, for scientific publication (or printing, in general) we may want to also save the figures as high-resolution images.

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How to Make a Scatter Plot in R with Ggplot2

Erik Marsja
October 16, 2019
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How to Make a Scatter Plot in R with Ggplot2

In this post, we will learn how make scatter plots using R and the package ggplot2.

More specifically, we will learn how to make scatter plots, change the size of the dots, change the markers, the colors, and change the number of ticks. 

Furthermore, we will learn how to plot a trend line, add text, plot a distribution on a scatter plot, among other things. In the final section of the scatter plot in R tutorial, we will learn how to save plots in high resolution.

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How to Make a Scatter Plot in Python using Seaborn

Erik Marsja
August 5, 2019
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How to Make a Scatter Plot in Python using Seaborn

Data visualization is a big part of the process of data analysis. In this post, we will learn how to make a scatter plot using Python and the package Seaborn. In detail, we will learn how to use the Seaborn methods scatterplot, regplot, lmplot, and pairplot to create scatter plots in Python.

More specifically, we will learn how to make scatter plots, change the size of the dots, change the markers, the colors, and change the number of ticks.  Furthermore, we will learn how to plot a regression line, add text, plot a distribution on a scatter plot, among other things. Finally, we will also learn how to save Seaborn plots in high resolution. That is, we learn how to make print-ready plots.

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How to Read and Write JSON Files using Python and Pandas

Erik Marsja
July 31, 2019
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How to Read and Write JSON Files using Python and Pandas

In this post, we will learn how to read and write JSON files using Python. In the first part, we are going to use the Python package json to create and read a JSON file as well as write a JSON file. After that, we are going to use Pandas read_json method to load JSON files into Pandas dataframe. Here, we will learn how to read from a JSON file locally and from an URL as well as how to read a nested JSON file using Pandas.

Finally, as a bonus, we will also learn how to manipulate data in Pandas dataframes, rename columns, and plot the data using Seaborn.

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9 Data Visualization Techniques You Should Learn in Python

Erik Marsja
July 15, 2019
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9 Data Visualization Techniques You Should Learn in Python

With the ever-increasing volume of data, it is impossible to tell stories without visualizations. Data visualization is an art of how to turn numbers into useful knowledge. Using Python we can learn how to create data visualizations and present data in Python using the Seaborn package.

In this post we are going to learn how to create the following 9 plots:

  1. Scatter Plot
  2. Histogram
  3. Bar Plot
  4. Time Series Plot
  5. Box Plot
  6. Heat Map
  7. Correlogram
  8. Violin Plot
  9. Raincloud Plot
Python data visualization techniques you need to know

Python Data Visualization Tutorial: Seaborn

As previously mentioned in this Python Data Visualization tutorial we are mainly going to use Seaborn but also Pandas,  and Numpy. However, to create the Raincloud Plot we are going to have to use the Python package ptitprince.

Python Raincloud Plot using the ptitprince package
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