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DateTimeContinuousAxis Labels Wrong
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Stephen
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Stephen asked on 22 Aug 2017, 08:58 PM

I think this issue must have come about in a recent version, since it was not a problem in the past, but the time labels on my chart in Android are labeled as 11 hours earlier thanthe actual values. Here is some sample code, and I've attached a screenshot. The current time was 2:47pm, but the chart shows 3:46am. This problem only happens on Android. iOS is fine. Any ideas?

    <chart:RadCartesianChart>

        <chart:RadCartesianChart.HorizontalAxis>
            <chart:DateTimeContinuousAxis MajorStep="30" MajorStepUnit="Second" LabelFormat="T" />
        </chart:RadCartesianChart.HorizontalAxis>
        <chart:RadCartesianChart.VerticalAxis>
            <chart:NumericalAxis/>
        </chart:RadCartesianChart.VerticalAxis>
        <chart:RadCartesianChart.Series>
            <chart:SplineSeries ItemsSource="{Binding DateTimeValues}">
                <chart:SplineSeries.CategoryBinding>
                    <chart:PropertyNameDataPointBinding PropertyName="DateTime"/>
                </chart:SplineSeries.CategoryBinding>
                <chart:SplineSeries.ValueBinding>
                    <chart:PropertyNameDataPointBinding PropertyName="Value"/>
                </chart:SplineSeries.ValueBinding>
            </chart:SplineSeries>
        </chart:RadCartesianChart.Series>
    </chart:RadCartesianChart>

    public partial class MainPage
    {
        public MainPage()
        {
            InitializeComponent();
            BindingContext = new ViewModel();
        }
        public class DateTimeValue
        {
            public DateTime DateTime { get; set; }
            public double Value { get; set; }
        }

        public class ViewModel
        {
            public List<DateTimeValue> DateTimeValues { get; set; }

            public ViewModel()
            {
                DateTimeValues = new List<DateTimeValue>
                {
                    new DateTimeValue { DateTime = DateTime.Now.AddSeconds( -30 * 1 ), Value = 1 },
                    new DateTimeValue { DateTime = DateTime.Now.AddSeconds( -30 * 2 ), Value = 3 },
                    new DateTimeValue { DateTime = DateTime.Now.AddSeconds( -30 * 3 ), Value = 2 },
                    new DateTimeValue { DateTime = DateTime.Now.AddSeconds( -30 * 4 ), Value = 5 }
                };
            }
        }
    }

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Ves
Telerik team
answered on 25 Aug 2017, 07:15 AM
Hi Stephen,

Indeed, I can confirm there is a problem with the control. Two problems actually -- incorrect afternoon times label format and DST offset. You can find them logged in our feedback portal here and here. We will aim to fix these with our next release, expected in mid-September. I have updated your Telerik points.

Best regards,
Ves
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Stephen
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answered on 25 Aug 2017, 01:39 PM
Ahhh, I was wondering how there could be an 11 hour discrepancy. The wrong am/pm label plus DST not being reflected seems like it could do it though. Thanks for letting me know.
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Stephen
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answered on 07 Sep 2017, 06:43 PM
Hey, Ves. Do you have any specific ETA on the fixes for those two issues? I don't see any actual movement in the feedback portal, and I'm trying to determine how much time to spend on a workaround for this in our next release, which is coming soon. Thanks.
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Ves
Telerik team
answered on 12 Sep 2017, 12:03 PM
Hi Stephen,

The fixes will be included in our next release -- R3 2017, expected later this week.

Best regards,
Ves
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Stephen
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answered on 12 Sep 2017, 03:10 PM
That's awesome. Thanks for the update.
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Lance | Manager Technical Support
Telerik team
answered on 13 Sep 2017, 06:10 PM
Hi Stephen,

I just wanted to inform you that the UI for Xamarin Q3 2017 update is available now.

You can get it through the Telerik Control Panel, Telerik NuGet server or direct download from the product page.

Regards,
Lance | Tech Support Engineer, Sr.
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Stephen
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answered on 18 Sep 2017, 10:24 PM
I'm still only seeing v2017.2.818.1 across the board on your Nuget server. Is that something on my end, or is there a delay before it's available that way?
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Lance | Manager Technical Support
Telerik team
answered on 19 Sep 2017, 02:52 PM
Hi Stephen,

This is likely because your UI for Xamarin license has expired. When authenticating with your Progress account, it uses your license information to determine which packages you can install.

Just to make sure the package was published, I doubled checked and can see the following result:



Regards,
Lance | Tech Support Engineer, Sr.
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Stephen
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answered on 19 Sep 2017, 03:57 PM
Ahh, yeah, you're right. That's the issue. How can I get access to these fixes? I could totally understand buying a new license for new features or for support if we were still actively developing with the product, but these are fixes for major bugs in the product we bought and implemented a long time ago.
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Lance | Manager Technical Support
Telerik team
answered on 21 Sep 2017, 06:21 PM
Hi Stephen,

There is no process to get new versions of the licensed product if your license has expired. The benefits of keeping a subscription current is not only for new features, but also for general maintenance. 

We release 3 major releases (R2 2017) and 3 minor releases (R2 2017 SP1) a year. There are also occasional out-of-band releases (aka internal builds). 

- New Features and Controls: (e.g. R3 2017 included the new DataGrid control).
- Maintenance: (e.g. bug fixes and optimizations)

You can see the release history here, which details what was in each released version (both major and minor).

There are cases where we release a patch for all versions regardless of licensing (e.g. security fixes), but this isn't one of them. I hope I was able to clarify this, let me know if you have any additional questions.

Regards,
Lance | Tech Support Engineer, Sr.
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Stephen
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answered on 21 Sep 2017, 06:34 PM

Thanks for breaking that all down for me.I'd be happy to maintain a license, but our implementation with Telerik UI is complete for now and there's no reason for us to spend the money on something we don't need.

The licensing model is not uncommon and generally fine if things are well polished. However, I think you guys need to consider changing your out-of-band release policy. I consider these bugs major, and as a developer myself, I wouldn't ship a product to a customer and expect them to pay more just to get a fix like this in any licensing model.

We have worked around the bugs as best we can, and when we outgrow this product, we'll find another solution. You guys have been great support-wise, but I can't really live with the bug fix policy. Thanks.

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Lance | Manager Technical Support
Telerik team
answered on 21 Sep 2017, 09:45 PM
Hello Stephen,

I just wanted to let you know that I have personally passed your feedback on to the the appropriate engineering team and product leadership. 

If
 there is something that can be done in terms of an out-of-band patch, they'll be the ones who can determine if it's possible and how to go about doing it.

Thank you for choosing UI for Xamarin for your application thus far, we value your business and want to see you be successful in implementations using our tooling and controls.

Regards,
Lance | Tech Support Engineer, Sr.
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Stephen
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answered on 21 Sep 2017, 09:46 PM
Thanks, Lance. I really appreciate that.
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Stephen
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Ves
Telerik team
Stephen
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Lance | Manager Technical Support
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