chartView does't overlay with dark color highlighted value in bar chart

[cooler333]

let chartHighlight = ChartHighlight(xIndex: 0, dataSetIndex: 0, stackIndex: 0)
strongSelf.chartView.highlightValue(highlight: chartHighlight, callDelegate: true)

when bar was selected by tap all works well, but when select from code, overlay do not drown as expected

[danielgindi]

What do you see drawn instead?

[cooler333]

Nothing. ChartView call highlight delegate method. But does not draw overlay for bar section. Color stay same

Wednesday 7 October 2015 09:55 +0300 from Daniel Cohen Gindi [email protected]:

What do you see drawn instead?
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Reply to this email directly or view it on GitHub .

[danielgindi]

There may be a missing setNeedsDisplay call. I'll look into it. In the mean
time, try to add a setNeedsDisplay call.

On Wed, Oct 7, 2015 at 10:53 AM, Dmitry Coolerov [email protected]
wrote:

Nothing. ChartView call highlight delegate method. But does not draw
overlay for bar section. Color stay same

Wednesday 7 October 2015 09:55 +0300 from Daniel Cohen Gindi <
[email protected]>:

What do you see drawn instead?

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Reply to this email directly or view it on GitHub .

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Reply to this email directly or view it on GitHub
#449 (comment)
.

[danielgindi]

Well I couldn't reproduce this problem. I'm guessing your Highlight object is not configured well

[danielgindi]

If it's not a stacked bar chart, set stackIndex to -1 (Or use a different constructor)

[cooler333]

@danielgindi i can't highlight segment on stacked bar chart without ChartRange param. But all methods which return correct ChartRange are Internal func.

let entry = dataSet.entryForXIndex(_xIndex)
let point = chartView.getPosition(entry!, axis: dataSet.axisDependency)
let chartHighlight = chartView.getHighlightByTouchPoint(point)
chartView.highlightValue(highlight: chartHighlight, callDelegate: true)

the code above doesn't allow to change yVal. Always return last(top) segment from ChartDataEntry

[cooler333]

The problem in range.

let chartHighlight = ChartHighlight(xIndex: _xIndex, dataSetIndex: 0, stackIndex: _yIndex, range: ChartRange(from: ???, to: ???))

if range exist (in internal func called by gesture recogniser) chart is highlighted, but if I pass nil range nothing happens.

[cooler333]

fixed:

let entry = dataSet.entryForXIndex(_xIndex) as! BarChartDataEntry

let x = Double(_xIndex)

var y = 0.0
for (var i = 0; i <= _yIndex; i++) {
    y += entry.values![i]
}

let pixel = chartView.getPixelForValue(x, y: y, axis: dataSet.axisDependency)
let chartHighlight = chartView.getHighlightByTouchPoint(pixel)
chartView.highlightValue(highlight: chartHighlight, callDelegate: true)

// _xIndex, _yIndex - private property

[danielgindi]

@PhilJay It seems like the stackIndex is not used at all when drawing highlights for stacked bar, but the range property. It is only used for determining a boolean of isStacked... Are you planning on "fixing" this or should the users rely on the range instead?

[liuxuan30]

@danielgindi I just answered question #504 yesterday, to use stackIndex -1 to highlight the whole stacked bar, instead of the segments. Is this valid?

[raghunath44]

I want to show yValue in AnotherBarChart.This is my Code:
-(void)setUpAnotherBarViewOptions:(BarChartView *)anotherBarChart
{

anotherBarChart.descriptionText = @"";
anotherBarChart.noDataTextDescription = @"You need to provide data for the chart.";

anotherBarChart.maxVisibleValueCount = 60;
anotherBarChart.pinchZoomEnabled = NO;
anotherBarChart.drawBarShadowEnabled = NO;
anotherBarChart.drawGridBackgroundEnabled = NO;

ChartXAxis *xAxis = anotherBarChart.xAxis;
xAxis.labelPosition = XAxisLabelPositionBottom;
xAxis.spaceBetweenLabels = 0.0;
xAxis.drawGridLinesEnabled = NO;


ChartLegend *legend = anotherBarChart.legend;
legend.position = ChartLegendPositionBelowChartCenter;
legend.font = [UIFont fontWithName:@"HelveticaNeue-Light" size:14.f];

anotherBarChart.leftAxis.drawGridLinesEnabled = NO;
anotherBarChart.rightAxis.drawGridLinesEnabled = NO;
anotherBarChart.leftAxis.enabled = NO;
anotherBarChart.rightAxis.enabled = NO;

anotherBarChart.legend.enabled = YES;    

}