Question 1

How do I use YMTreeMap with a UICollectionView for a scrolling treemap?

Accepted Answer

You can create a custom UICollectionViewLayout that uses YMTreeMap to calculate cell frames. The library outputs CGRects, which you can map to collection view items, but you'll need to handle cell rendering and recycling yourself.

Question 2

YMTreeMap or Charts framework for iOS treemaps – which is better?

Accepted Answer

YMTreeMap is better for custom, high-performance layouts where you need control over rendering. Charts framework offers pre-built, interactive treemaps but may be heavier and less flexible. Choose YMTreeMap for lightweight, bespoke visualizations; Charts for out-of-the-box features.

Question 3

Can I update the treemap layout dynamically with new data in YMTreeMap?

Accepted Answer

Yes, you can recompute the layout by calling tessellate with new values, but there's no built-in animation or smooth transitions. You'll need to manage UI updates manually, which can be performance-intensive for frequent changes.

Question 4

How to add custom colors and text labels to YMTreeMap rectangles?

Accepted Answer

YMTreeMap only provides rectangle geometries. You must implement coloring and labeling in your rendering code, such as in drawRect for CoreGraphics or in UICollectionViewCell subclasses, using the output CGRects.

Question 5

Is YMTreeMap fast enough for live financial data feeds?

Accepted Answer

With performance under 4ms for 1,000 items, it's suitable for real-time updates. However, you need to ensure efficient rendering and data handling, as the library itself only handles layout computation.

Question 6

How to install YMTreeMap using Swift Package Manager?

Accepted Answer

The README only mentions CocoaPods installation. For SPM, you might need to check if the repository supports it or manually integrate the source files, as there's no explicit SPM support documented.

YMTreeMap

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