The real heart of the demonstration app, is something that we didn’t cover at all, in the tutorial. That’s the Data Model for the app, which is in the DataProvider.swift structural type. It’s a fairly basic type, that consumes some CSV (Comma-Separated-Values) data, and formats it into a configuration that can drive the chart. The ... Read more| Little Green Viper
In this exercise, we’ll add a “pinch-to-zoom-in/out” feature to the chart. It will be very basic, but will work quite well. The Basics The zoom will be X-axis only. It doesn’t actually make sense to zoom in on the Y-axis, especially since we have the ability to select a bar, and get the exact values ... Read more| Little Green Viper