Crossfilter for Data Science Essential Training

Need to slice up large and complex JavaScript data arrays with maximum speed and effectiveness? Learn how to use Crossfilter.js to group and filter data directly in a web browser.

Introduction

• Introduction
• What is Crossfilter?
• Assessing your current skills

1. Preparing to Use Crossfilter.js

• Recalling HTML basics
• Downloading Crossfilter.js
• Logging dummy data to the console
• Seeing cross-filtered data with print_filter.js

2. Using Dimensions in Crossfilter

• Cross-filtering our data
• Creating a dimension
• Advanced dimensions
• Why dimensions are expensive

3. Groups

• Grouping your data with group()
• Using groupAll() on a dimension
• Counting rows with reduceCount()
• Calculating from data points with reduceSum()
• Making sense of reduce()

4. Filters

• Filtering and statefulness
• Filtering by range
• Filtering by function
• Clearing and obeying filters
• Removing records matching filters

Conclusion

• Next steps