Line chart grouping of dates on x-asis

[nomz]

Hello everyone,

When creating a line chart i am putting prices on the y-axis and dates on the x-asis.
One date can occur more than once.
What happens is as following: for example i have 6? on 12/10, and 4? on 12/10.
Both prices come to be on one 12/10 point but the dates repeat themself and dont get grouped. (screenshot attached)

This is the code i use for the chart:

<ext:Chart ID="chrtShipments" runat="server" Animate="true" StoreID="strChartData" Shadow="true" Legend="true" AutoHeight="True" Width="950" Flex="1">
                            <LegendConfig Position="Right" />
                            <Axes>
                                <ext:NumericAxis Grid="true" Fields="PriceOfShipment" Title="Vrachtprijs ? per ton" />
                                <ext:CategoryAxis Fields="DateOfShipment" Position="Bottom" Title="Datum" />
                            </Axes>
                            <Series>
                                <ext:LineSeries Axis="Left" XField="DateOfShipment" YField="PriceOfShipment">
                                    <HighlightConfig Size="7" Radius="7" />
                                    <MarkerConfig Type="Cross" Size="4" Radius="4" StrokeWidth="0" />
                                    <Tips ID="Tips1" runat="server" TrackMouse="true" Width="110" Height="40">                            
                                        <Renderer Handler="this.setTitle(storeItem.get('PriceOfShipment') + ' ? per ton op ' + storeItem.get('DateOfShipment'));"></Renderer>
                                    </Tips>
                                </ext:LineSeries>
                            </Series>
</ext:Chart>

I have tried to use time axis instead of the category, or tried to use the time of the date but its all the same.

Any ideas?
Thank you!

Naomi

[Daniil]

Hi Naomi,

Well, CategoriesAxis (and, I think, the others as well) can't group the same values.

Also I'm not sure how LineSeries should draw such chart.

Lets imaging the following points:
(1, 1)
(2, 2)
(2, 3)

So, the chart should look something like this.

I don't think a single LineSeries could draw such chart.

Probably, using two LineSeries could be a solution.