Summary
We introduced scatter plots and saw how to create them, both using the graph_objects module, and using Plotly Express. We saw how to create multiple traces and tried different approaches for that. We then discussed color mapping and setting and explored how different the process is for continuous and discrete (categorical) variables. We saw different scales – sequential, diverging, and qualitative. We also saw how we can set our own colors, sequences, and scales. We also tackled some issues that arise when we have outliers, and when we have over-plotting. We experimented with opacity, changing symbols, and marker sizes, as well as using logarithmic scales to make our charts more readable. We also introduced sliders and learned how they work, and created two sliders that work together to generate charts expressing three values (as opposed to two values previously). We then created a callback function that managed those interactions and integrated it into our app.
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