Chart displays values, but no bars

[FasterThanLlamas]

func updateChartWithData() {
    for diaper in realm.objects(SubmittedEntry.self).filter("diaperWasChanged = true") {
        diaperEntries.append(diaper.submissionTime!)
    }
    for i in 0..<diaperEntries.count {
        let timeIntervalForDate: TimeInterval = diaperEntries[i].timeIntervalSince1970
        let dataEntry = BarChartDataEntry(x: Double(timeIntervalForDate), y: 1.0)
        dataEntries.append(dataEntry)
    }
    let chartDataSet = BarChartDataSet(values: dataEntries, label: "Diaper count")
    let chartData = BarChartData(dataSet: chartDataSet)
    barView.data = chartData

    let xaxis = barView.xAxis
    xaxis.valueFormatter = axisFormatDelegate
}

[seenoevo]

show code of what your stringForValue looks like, you're probably not formatting it correctly

look at similar code here if you need guidance: #2215

[FasterThanLlamas]

extension ChartsViewController: IAxisValueFormatter {
    
    func stringForValue(_ value: Double, axis: AxisBase?) -> String {
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "MMM d, yyyy"
        return dateFormatter.string(from: Date(timeIntervalSince1970: value))
    }
}

[seenoevo]

you are incorrectly passing in timeIntervalForDate instead of the index i into BarChartDataEntry(x: Double(timeIntervalForDate), y: 1.0)

just look at BarChartViewController.m and its associated DayAxisValueFormatter.m to see how it's done, it's similar to how you're doing it

[FasterThanLlamas]

Are there Swift versions?

[seenoevo]

no there is not, but you can see that the code is very similar

for example you can see in BarChartViewController.m:

    for (int i = start; i < start + count + 1; i++)
    {
        double mult = (range + 1);
        double val = (double) (arc4random_uniform(mult));
        if (arc4random_uniform(100) < 25) {
            [yVals addObject:[[BarChartDataEntry alloc] initWithX:i y:val icon: [UIImage imageNamed:@"icon"]]];
        } else {
            [yVals addObject:[[BarChartDataEntry alloc] initWithX:i y:val]];
        }
}

Notice it is passing in the index i in initWithX:i

As I mentioned, give it a barWidth and see what happens because I dont see that in your code, so the chart does not know how to size the bar correctly

[fabio90h]

can put your code up as an example?
Im still confused on what to do.