different Bar color based on values

[gsolanki1509]

Dear all,

I want to show different colors for bars based on its values.

Can anyone help me please...!!

[gsolanki1509]

Currently, im doing as below:

func loadBarChart(_ count: Int, range: Double)
{
var yVals = BarChartDataEntry
for i in 0..<count //).reversed()
{
let val = Double((arrBarValues[i]))
yVals.append(BarChartDataEntry(x: Double(i), y: val!))
}

    var set1 = BarChartDataSet()
    
    if barChartView.data == nil
    {
   
        set1.colors = [UIColor(red: 255.0/255.0, green: 245.0/255.0, blue: 118.0/255.0, alpha: 1.0)  ]
        set1.drawValuesEnabled = false
 
        
        var dataSets = [ChartDataSet]()
        dataSets.append(set1)
        let data = BarChartData(dataSets: dataSets)
        
        let groupSpace = 0.1                 // space between bar groups
        let barSpace = 0.09                  // space between bars within a group
        
        data.barWidth = (1.0 - groupSpace) / 1.75 - barSpace         // 2 = number of bars within a group
        data.groupBars(fromX: 0.0, groupSpace: groupSpace, barSpace: barSpace)
        
        let  marker = YMarkerView( color: NSUIColor.black,
                                   font:  NSUIFont.systemFont(ofSize: 12.0),
                                   textColor: NSUIColor.white,
                                   insets: UIEdgeInsets(top: 8.0, left: 0.0, bottom: 8.0, right: 0.0),
                                   yAxisValueFormatter: HourValueFormatter())

        
        
        marker.minimumSize = CGSize(width: CGFloat(80.0), height: CGFloat(40.0))
        barChartView.marker = marker
        
        barChartView.data = data
        barChartView.fitBars = true
        
    }
    else
    {
        set1 = (barChartView.data!.dataSets[0] as! BarChartDataSet )
        set1.values = yVals
        
        barChartView.data?.notifyDataChanged()
        barChartView.notifyDataSetChanged()
        
    }
    
    barChartView.setNeedsDisplay()
}

[aelam]

You can overwrite the colorForIndex Or set two yValues for each entry. and colors.first for one yValues[0] the last for yValues[1] 发自我的 iPhone

…

在 2017年4月9日，下午2:02，gsolanki1509 ***@***.***> 写道： Currently, im doing as below: func loadBarChart(_ count: Int, range: Double) { var yVals = BarChartDataEntry for i in 0..<count //).reversed() { let val = Double((arrBarValues[i])) yVals.append(BarChartDataEntry(x: Double(i), y: val!)) } var set1 = BarChartDataSet() if barChartView.data == nil { set1.colors = [UIColor(red: 255.0/255.0, green: 245.0/255.0, blue: 118.0/255.0, alpha: 1.0) ] set1.drawValuesEnabled = false var dataSets = [ChartDataSet]() dataSets.append(set1) let data = BarChartData(dataSets: dataSets) let groupSpace = 0.1 // space between bar groups let barSpace = 0.09 // space between bars within a group data.barWidth = (1.0 - groupSpace) / 1.75 - barSpace // 2 = number of bars within a group data.groupBars(fromX: 0.0, groupSpace: groupSpace, barSpace: barSpace) let marker = YMarkerView( color: NSUIColor.black, font: NSUIFont.systemFont(ofSize: 12.0), textColor: NSUIColor.white, insets: UIEdgeInsets(top: 8.0, left: 0.0, bottom: 8.0, right: 0.0), yAxisValueFormatter: HourValueFormatter()) marker.minimumSize = CGSize(width: CGFloat(80.0), height: CGFloat(40.0)) barChartView.marker = marker barChartView.data = data barChartView.fitBars = true } else { set1 = (barChartView.data!.dataSets[0] as! BarChartDataSet ) set1.values = yVals barChartView.data?.notifyDataChanged() barChartView.notifyDataSetChanged() } barChartView.setNeedsDisplay() } — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.

[gsolanki1509]

can you please elaborate ???

[gsolanki1509]

My concern is to show bar color as blue if its timing is after 9:00 AM. how can i get the value of that particular bar in that function?

[gsolanki1509]

Got it... thanks ..!! :)

[anasimtiaz]

@gsolanki1509 Would be nice if you can share the solution

[thierryH91200]

@anasimtiaz look at #2334 It is the same principle
func colorPicker(value : Double) -> NSUIColor etc....

[anasimtiaz]

@thierryH91200 Thanks!

[gsolanki1509]

Hi @anasimtiaz ,

Please find my code as below:

I'm using an Array for colors "arrBarColors". And then adding colors to it based on chart Values.

func loadBarChart(_ count: Int, range: Double)
{
var yVals = BarChartDataEntry
for i in 0..<count //).reversed()
{
let val = Double((arrBarValues[i]["time"])!)
print(val!)
yVals.append(BarChartDataEntry(x: Double(i), y: val!))
if (Int(arrBarValues[i]["time"]!)!) > 34200 { // 09:30 AM
arrBarColors.append(UIColor(red: 234.0/255.0, green: 23.0/255.0, blue: 38.0/255.0, alpha: 1.0))

        }else if (Int(arrBarValues[i]["time"]!)!) == 28801 { // 08:00 AM
            arrBarColors.append(UIColor(red: 0.0/255.0, green: 0.0/255.0, blue: 0.0/255.0, alpha: 0.0))
            
        }else{
            arrBarColors.append(UIColor(red: 255.0/255.0, green: 245.0/255.0, blue: 118.0/255.0, alpha: 1.0))
        }
    }
    
    var set1 = BarChartDataSet()
    
    if barChartView.data == nil
    {
        print(yVals)
        
        set1 = BarChartDataSet(values: yVals, label: "DataSet")
        set1.colors = arrBarColors //[UIColor(red: 255.0/255.0, green: 245.0/255.0, blue: 118.0/255.0, alpha: 1.0)  ]//ChartColorTemplates.vordiplom() 255,245,118
        set1.drawValuesEnabled = false
      
        
        var dataSets = [ChartDataSet]()
        dataSets.append(set1)
        let data = BarChartData(dataSets: dataSets)
        
        let groupSpace = 0.1                 // space between bar groups
        let barSpace = 0.09                  // space between bars within a group
        
        data.barWidth = (1.0 - groupSpace) / 1.75 - barSpace         // 2 = number of bars within a group
        data.groupBars(fromX: 0.0, groupSpace: groupSpace, barSpace: barSpace)
        
        let  marker = YMarkerView( color: NSUIColor.black,
                                   font:  NSUIFont.systemFont(ofSize: 12.0),
                                   textColor: NSUIColor.white,
                                   insets: UIEdgeInsets(top: 8.0, left: 0.0, bottom: 8.0, right: 0.0),
                                   yAxisValueFormatter: HourValueFormatter())
 
        
        
        marker.minimumSize = CGSize(width: CGFloat(80.0), height: CGFloat(40.0))
        barChartView.marker = marker
        
        barChartView.data = data
        barChartView.fitBars = true
        
    }
    else
    {
        set1 = (barChartView.data!.dataSets[0] as! BarChartDataSet )
        set1.values = yVals
        
        barChartView.data?.notifyDataChanged()
        barChartView.notifyDataSetChanged()
        
    }
    
    barChartView.setNeedsDisplay()
}

Hope it helps us :)

[anasimtiaz]

Thank you. That helped a lot!