Steps of Creating the Treemap Chart

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Step 1: Download Data
Download the dataset from Baby Names from Social Security Card Applications-National Level Data. Once the download completes, you will have one zip file. Unzip the file and you will see many .txt files in the folder. The dataset  is organized by years, one file for each year.  A line in each file includes name, gender, and the number of newborns given that name in that year.

Step 2:  Clean and Prepare the Data
Step 3: Visualize the Data with Google Chart Treemap
Step 4: Discuss the visualization and explore extensions