SM HeatMap View With Swift
SMHeatMapView
Example
To run the example project, clone the repo, and run pod install from the Example directory first.
Usage
no delegates or callbacks it just return UIImage? right away
import SMHeatMapView
//processHeatmap image
image.image = SMHeatMapView().processHeatMapImage(point: points,
gridSize: CGSize(width: 200, height: 200),
ranges: [0, 0.1, 0.25 , 0.5 ,0.75, 1],
colors: [Color0,
Color1,
Color2,
Color3,
Color4,
Color5
])
WeightCustomization
this part of code is responsible for calculating heatmap weight
customize as your own taste
for y in 0..<Int(gridSize.height) {
for x in 0..<Int(gridSize.width) {
var totalWeight : CGFloat = 0
for innerpoints in inputs {
let distance = CGPoint(x: x, y: y).distance(to: innerpoints)
//dropout weights for distance longer than radius
totalWeight += max(0, (radius - distance) )
}
//normalize weight to 0 ~ 1
weight[x][y] = totalWeight / CGFloat(inputs.count)
}
}
Installation
SMHeatMapView is available through CocoaPods. To install
it, simply add the following line to your Podfile:
pod 'SMHeatMapView'
Author
sangriel, sangriel3@gmail.com
License
SMHeatMapView is available under the MIT license. See the LICENSE file for more info.