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!
Related
I am playing with candlestick graphs (example from here: https://apexcharts.com/javascript-chart-demos/candlestick-charts/basic/) everything work as expected.
However, I am struggling with adding my signal data for a visual representation of the graph.
I am unable to find a solution that works I was thinking I can somehow fine-tune a timeline - I tried chart.js/apexcharts and for now, I believe the closest will be with the second framework.
What I need is a bar chart that can be used in numeric ranges for the X and Y-axis as presented below. (the goal is to be able to add the green bar as presented)
Is there an easy win or an idea of how to approach this?
Is there something I am missing?
That is my current solution (line graphs with stopWin/stopLose and entry price).
Still suboptimal - but works and is easy to achieve.
After weeks of playing around with it - the solution stayed:
I got two instances of apexcharts one with candlestick and one with line graphs
they are in a single div with CSS playground and position absolute.
I am passing standardised min/max values and has to have the same amount of elements in them (line graphs are allowing You to add null values which allow using this solution.
The final version work is repeatable and looks good.
if you need some help in similar case - feel free to reach out ;)
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 want to create circular slider. I've been searching, but I can't find any information. So any tutorial, guide or if someone already created like this. Please post their XML code.
Instead of making a circular slider (which as #auburg points out) would be a little unintutive to use (think the old telephone dials), consider making it a dial like a thermostat:
It's functionally very similar, but has a much larger hit-test area and is therefore less easy to mess-up for the user.
Try this guide: https://blogs.msdn.microsoft.com/jerrynixon/2012/12/06/walkthrough-building-a-sweet-dial-in-xaml-for-windows-8/
A circular slider can be implemented just like a normal horizontal or vertical slider. The only difference would be that in the MouseMove event handler of the thumb during the drag operation you cannot just handle the horizontal or vertical position. Instead you have to calculate the angle relative to the center of the slider and map that to the value of the slider.
I am working on a project that requires a slider control that corresponds to an image and or a multitude of div objects. The spacing of the slider is irregular (the steps could be [1,4,7,13,14,16...]). Also the steps will correspond to specific spots on an image and or to a specific div object. The perfect slider would be dynamic and re-size with the screen but that may be actually impossible.
The hard part is that I am unable to use JQueryUI, instead I am limited to using controls that work with AngularJS.
I have been looking for hours and cannot find anything that would be a good starting point. So my question is whether anyone has found a good slider control to use with AngularJS?
This one fits some of your criteria
angularjs-slider
Ive been googling this alot but can't find any working solution. Im using Shell Integration Library to cerate custom Window Chrome and I also need drop shadows for this window. Some say setting GlassFrameThickness to -1 do the trick but its not working for me. And Jeremiah Morrill suggested using DwmExtendFrameIntoClientArea. Ive tried that and it works, sort of. The shadows looks ok but when the window is shown it is first shown as a glass-frame and then a second later the real content is superimposed. This causes to much flickering for me. Is there any way to get rid of this flickering or is there any better way using only Shell Integration Library?
I had a similar problem where it wouldn't display any shadow when using a custom chrome. It worked fine when using the glass.
I got a shadow by setting GlassFrameThickness="0,0,0,1". The glass didn't show and I got the shadow.
Be warned, the shadow is a simple RECT to Windows, so if you have a funky chrome with transparencies it may look funny.
Also if you support the maximized state be aware the you'll need to set a margin on your top-level panel element of "8,8,8,8" when in maximized mode. All other modes should be "0,0,0,0".
To alimbada, the WindowStyle defaults to None on custom chrome.
The Shell Integration Library uses DwmExtendFrameIntoClientArea, plus handling of several Window messages to get the effects. If you're using the full window rect (i.e. no rounded corners) then setting it to (0,0,0,1) as suggested will give you the drop shadows as you want. If you want to simulate the rounded corners of Aero, then setting it to (8,8,8,8) will extend the glass frame enough that the corners also stay rounded, and then you're responsible for not drawing over the corners of the rectangle. The shape of the drop shadow doesn't change regardless of the glass frame thickness.
The flashing you're seeing when setting the thickness to -1 still exists even when not fully extending the glass frame. What's happening is the window is getting shown while the content is still compositing. What you can do is simplify the default UI so it displays quicker (or you can stage it, bringing in a simnple background first and then replacing it with something usable), or you can create and show the window off-screen, and then move it to the desired start location once the content has been rendered. The easy way to detect when it's probably ready is to invoke a DispatchTimer with Priority=Loaded. That should only get invoked once the basic first layout has been completed.