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Line Series Graph Breaks with two data points

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Wadigzon
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Wadigzon asked on 09 Sep 2013, 10:51 PM
Basically I have the following columns on the table feeding this graph (DeviceID=151, 152, 153, 154, 155, 156, 157, 158 total of Eight Line Series, one per device)

[TimeStamp] [DeviceId] [Volume]

Graph works nicely when lots of data is in the graph, even when one single data point is in the graph I see no problem, the graph breaks when I have TWO data points as shown in two_dp.jpg. So why is that? it works for one (one_dp.jpg), it works for three (three_dp.jpg), four (four_dp.jpg), five (five_dp.jpg), and so on, BUT NOT FOR TWO data points(8 per device, 16 total). what's going on?.

The Sample Data is given by:
TimeStamp DeviceId Volume
9/9/2013 9:30 151 19
9/9/2013 9:30 152 20
9/9/2013 9:30 153 20
9/9/2013 9:30 154 19
9/9/2013 9:30 155 0
9/9/2013 9:30 156 0
9/9/2013 9:30 157 0
9/9/2013 9:30 158 0
9/9/2013 9:31 151 22
9/9/2013 9:31 152 24
9/9/2013 9:31 153 24
9/9/2013 9:31 154 18
9/9/2013 9:31 155 0
9/9/2013 9:31 156 0
9/9/2013 9:31 157 0
9/9/2013 9:31 158 0
9/9/2013 9:32 151 21
9/9/2013 9:32 152 22
9/9/2013 9:32 153 21
9/9/2013 9:32 154 24
9/9/2013 9:32 155 0
9/9/2013 9:32 156 0
9/9/2013 9:32 157 0
9/9/2013 9:32 158 0
9/9/2013 9:33 151 25
9/9/2013 9:33 152 22
9/9/2013 9:33 153 21
9/9/2013 9:33 154 23
9/9/2013 9:33 155 0
9/9/2013 9:33 156 0
9/9/2013 9:33 157 0
9/9/2013 9:33 158 0
9/9/2013 9:34 151 22
9/9/2013 9:34 152 20
9/9/2013 9:34 153 21
9/9/2013 9:34 154 20
9/9/2013 9:34 155 0
9/9/2013 9:34 156 0
9/9/2013 9:34 157 0
9/9/2013 9:34 158 0

Data shown in one_dp.jpg includes records whose timestamps are in [9:30am ... 9:31am> (doesn't include 9:31am)
Data shown in two_dp.jpg includes records whose timestamps are in [9:30am ... 9:32am>  (doesn't include 9:32am)
Data shown in three_dp.jpg includes records whose timestamps are in [9:30am ... 9:33am>  (doesn't include 9:33am)
Data shown in four_dp.jpg includes records whose timestamps are in [9:30am ... 9:34am>  (doesn't include 9:34am)
Data shown in five_dp.jpg includes records whose timestamps are in [9:30am ... 9:35am>  (doesn't include 9:35am)

The full graph (with lots of data point) is shown in lots-dp.jpg

This is how I built the graph: created data source with the fields mentioned above, dragged Graph wizard onto the detail
Section, dragged DeviceId on Series, 
Dragged Volume on Values, Dragged TimeStamp on Categories. Clicked on Series, and set X = (Fields.TimeStamp)
Clicked on the horizontal Axis and change Scale from "Category Scale" to "DateTimeScale".

Hope you can help. I have been dealing with this issue for the last week. without any success.



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Wadigzon
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answered on 10 Sep 2013, 05:31 PM
I am going to submit a support ticket as I have the sample report in VS2012 that you can see for yourself.
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Wadigzon
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answered on 10 Sep 2013, 06:15 PM
Support ID:735485 -- Graph Breaks with Two Data Points 

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Stef
Telerik team
answered on 11 Sep 2013, 05:04 PM
Hi,

This is a quote from the answer in your support ticket on the same question:

"This is a known issue regarding lineSeries with only two points and set SmoothLine property to true. We have provided a fix for it in the latest Telerik Reporting Q2 2013 SP1 version 7.1.13.802."

Let us know if you have any further questions.

Regards,
Stef
Telerik

Have you tried the new visualization options in Telerik Reporting Q2 2013? You can get them from your account.

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