In a video of the DevExpress Chart Demo (see attached image and link below) out on YouTube... the "Large DataSource" demo seems to have some sort of "range" bar at the top where you can see an overview of the data and adjust the left and right of the range and drag the range left and right as well. In the current version of DevExpress the demo doesn't have this feature. Does anyone know how to implement it... or at least what it is officially called so I can look it up in the documentation.
Also, if anybody knows, is there is source code for this demo?
The actual video I'm talking about is here: https://www.youtube.com/watch?v=HmA6vANrKKk
some sort of "range" bar at the top
Your screenshot is demonstrates the RangeControl, which provides a data range selection functionality.
ChartControl on your screenshot is bound to the RangeControl via the RangeControl.Client property.
Related
I'm a long-time user of SciChart, but it's an old version (3.1). I've just started using FastHeatMapRenderableSeries for the first time, and there is a requirement for a user to alter the chart's gradient stops. I've implemented a UI to do this (see image), which involves dragging markers that updates their respective gradient stop within the ColorMap's LinearGradientBrush. It's working in as much as gradient changes can be seen in the chart's HeatColorMap (not shown on this screenshot), and also in my "drag" control (a Rectangle whose Fill is bound to the ColorMap's brush).
The problem is that the colours within the chart itself don't change - perhaps I was being a little too hopeful that this would happen automatically! Is this possible, or will I have to recreate the series each time there has been a change to the gradient?
We actually have this working in a later version of SciChart. Im not sure which version exactly but it was introduced at some point. Have a look at this forum post which discusses a bug in the heatmap color map binding in v5.
In the v6 examples suite, you can drag the heat map legend and recolour the chart automatically, so we know in principle this works.
Very cool image by the way!
I have a chart which looks like this:
When I zoom into a section, the labels disappear:
However, I can get the labels back by scrolling all the way to the right and releasing the mouse:
And then when I scroll back to the left, the labels are all visible:
This behaviour is just super weird am I'm completely dumbfounded as to what would cause this, or even how to debug.
Does anyone have any ideas on what I could try to fix this? I'd like the labels to be shown as in the last image, but when first zooming.
It looks like others have had similar issues, so I'm going to try combining several answers I found online to maybe help fix your issue.
John (DevExpress Support) says:
It appears that the AutoLayout feature leads to this issue. Please set the ChartControl.AutoLayout property to False. This should make axis label elements visible.
https://www.devexpress.com/Support/Center/Question/Details/T328948/x-axis-labels-disappear-in-chartcontrol
Valdemar (DevExpress Support) says:
I suggest that you use the Axis2D.ResolveOverlappingOptions properties. Set AllowHide to False:
[XAML]
<dxc:XYDiagram2D.AxisX>
<dxc:AxisX2D >
<dxc:AxisX2D.Label>
<dxc:AxisLabel>
<dxc:Axis2D.ResolveOverlappingOptions>
<dxc:AxisLabelResolveOverlappingOptions AllowRotate="True" AllowStagger="True" AllowHide="False" />
</dxc:Axis2D.ResolveOverlappingOptions>
</dxc:AxisLabel>
</dxc:AxisX2D.Label>
</dxc:AxisX2D>
</dxc:XYDiagram2D.AxisX>
https://www.devexpress.com/Support/Center/Question/Details/Q489042/chart-axis-labels-disappearing-when-chart-is-resized
SharpStatistics says:
The only way I could replicate the problem you describe is by setting the x axis Label.style interval to a specific value, say,
area1.AxisX.LabelStyle.Interval = 100;
and then when I zoom in on the chart if the zoomed x axis section is less than 100 I don't see any lables.
loi-se (the OP) replies:
Thanks for your suggestion! But as far as i know i don't set the xaxis labelstyle anywhere, i just use: Chartarea1.AxisX.IntervalAutoMode = IntervalAutoMode.VariableCount
This works fine in the case of the yaxis but the xaxis seems to behave on its own will. Maybe i should renew my .net framework installation and get the latest version of the chart component? Any other suggestions?
https://social.msdn.microsoft.com/Forums/vstudio/en-US/d345d4a3-a4be-4b41-9c83-9a9d9dbb69b9/the-labels-of-the-xaxis-are-disappearing-when-i-zoom-in?forum=MSWinWebChart
This one is for SSRS reports, but I'm assuming it uses the same (or similar library) and supports the link right above this one.
When designing an SSRS Report using Chart you may notice that some of the labels whether in X or Y axis are not being displayed, this is because it’s so smart that it detects what you actually want (not!).
To display all labels follow the steps below:
Right click either the X or Y axis, Click Properties:
Set the Interval to 1:
Viola!
https://randypaulo.com/2012/02/20/ssrs-chart-label-missing-xy-axis-missing/
That's about all I can find that are similar, without spending a bunch more time researching this. Hopefully something here helped!
I really like a certain Silverlight feature that I've seen in a couple of sites. I would like to know what this "concept(s)" is/are so I can do more research and implemented it on my own. If you see the attached image, I like those expandable sections, reference (1) and (2) sections. They are circled in red and the features that I like are green and expandable.
For a live demo: http://demos.telerik.com/silverlight/#DataPager/FirstLook
Thanks for any advice.
Judging by the screenshot, it's just a collapsible pane. Such a control would have an API allowing two pieces of child content to be supplied, an orientation to be set (horizontal/vertical), and perhaps a collapse direction (left/right or up/down).
The control's template would place each piece of content alongside the other with a separator in between. Clicking the separator would collapse one piece of content in the chosen direction, thus giving the other piece of content more room.
Hii
Can anyone tell me how can I show percentage on the piechart....
The percentage is seen on mouseover event but I dont know how to show
the percentage on the piechart's slices....
If you are looking to put labels on the chart itself (instead of tooltip), take a look at this great blog post by WPF guru Bea Stollnitz.
It shows how to do this, in many different modes, and explains not only how, but why.
Take a look at amCharts Bundle for WPF. Pie chart supports labels on the slices, outside connected labels and includes an algorithm to prevent label overlapping.
I've just followed this tutorial (just to make sure) and I get the percentages of each slice as tooltip on mouse over by default.
If you post your code we might be able to spot if there's a problem with it.
You can use labelFunction in mx:PieSeries, and lableFunction look like that
private function pieSeries_labelFunc(item:Object, field:String, index:Number, percentValue:Number):String
{
return StringUtil.substitute("{0} ({1}%)",item.description,percentValue.toFixed(1));
}
Where description is the label that you want to see.
feel free to ask any question.
I would like to make a rotating form WPF effect like the one in the norton antivirus 2010.
The effect is a rotating form that changes the contents when the other side is shown. But the axis is not in the center of the form but moves from side to center and back. Like a three step effect.
The rotating form can be seen at 8' 07" in this video: http://www.youtube.com/watch?v=A3hHPdgi9Nk&feature=related (I'm sad but this was the only video I found on YouTube)
Thanks.
Have a look at the Thriple stuff on CodePlex: http://thriple.codeplex.com/
It's almost exactly what you're after.
Hope this helps.
I did not examine the details, but I know that Microsoft's patterns & practices team also uses a similar animation in their "StockTrader Reference Implementation" for the "Composite Application Guidance". They sub-classed the TabControl and added some animation to it. I think the relevant code parts can be found here:
AnimatedTabControl.Desktop.cs
Generic.xaml
just verify this link. It has code as well as the Sample.
From the Sample take the TransitionPresenter link from the left panel and choose the 3D Rotate item from the listbox. Then select the images from the top list. You can see the same effect in the video. I saw some initial sanp of the video and may be this link can help you.
http://bot.codeplex.com/