KTDTreeMap is an easy to use library for showing tree maps in an iOS UICollectionView. Tree Maps are a way to visualize related information in a way that maximizes space usage. Traditional pie charts or binary trees have lots of whitespace; tree maps fill their entire area.
Clone the repo and run 'pod install' in the directory. Open the .xcworkspace and run the demo app.
Cocoapods ≥ 1.3.0 Xcode ≥ 9.3.1 iOS ≥ 9.0
Add the following to your Podfile:
platform :ios, '9.0'
source 'https://github.com/kydonnelly/specs.git'
use_modular_headers!
pod 'KTDTreeMap', :testspecs => ['Tests']Similar to a pie chart, you can use this to display weighted parts of a whole. For example you might display file usage or categorized monthly expenses.
Some tree maps allow zooming to view detailed breakdowns within a part at a more granular level. Currently this library only supports a single level (no zooming).
Add a UICollectionView to your storyboard. Change its class to TreeMapCollectionView. Connect the dataSource and delegate IBOutlets as usual. The delegate must implement TreeMapCollectionViewDataSource in addition to UICollectionViewDataSource.
After installing the pod and opening the xcworkspace, go to Manage Schemes and select KTDTreeMap-Unit-Tests. Close the Manage Schemes screen, select the unit test target, and Cmd+U to run test cases.
MPL v2, see file.
Inspiration from openbudgetoakland.org.
Encouraged by Emily and Stephanie.
Square Tree Map algorithm based on https://www.win.tue.nl/~vanwijk/stm.pdf