I have two requirements for a flex charting component:
The grid lines should always remain fixed to a scaling I define using an array of data. Something like a graph paper sheet.
Plot multiple line series data over this grid.
How does one get complete control over the background grid lines? I have tried a combination of annotation elements and setting the linechart background elements. If I get the grid right, I can't plot over it (Probably due to the scale). Can anyone share how would one go about designing a graphpaper like interface for linecharts in flex/actionscript?
Related
I have figured out how to create custom html tooltips by using roles via googleVis. I can easily modify the content using html but I cannot understand how I can control the tooltip box itself.
My problem was generated because some of the custom tooltips I created are falling outside my chart area and I tried (unsuccessfully) to find a way to control the tooltip position. Idealy I would like to make them behave in the exact same way default tooltips behave in googleVis (always stay withinin the chart area).
When I later implemented the same concept into a line chart I found that I have another problem as well. The tooltip is falling on the line so I cannot see what is the exact point that refers to the tooltip.
Would it be possible for example to keep the callout style of default googleVis tooltip and change the content with HTML?
Additionally, do you know if there is any way to control more tooltip properties like border and background color?
i was also looking for the same
1) when laying out your data, make sure it has columns alternating between, say, data and tooltips, data and tooltips,... that way it is possible to customize tooltips for multiple columns (it does not work if you just append - à la cbind - a set of tooltips columns to your data frame).
Additionally try this http://rcharts.io/viewer/?6644957#.VHcpEkvrdbg
I am trying to make a GUI similar to the layout in Image attached.
The problem starts when I add the three frames besides the stacked widget.
Frame one contains some labels for status.
Frame two contains some buttons and two sliders.
Frame three contains a tab widget.
I am adding suitable layouts at every stage. The layout fails to adjust to screen size and the window goes outside the limited size. I tried setting maximum size for the frames and stacked widget but the problem stays.
Can some one tell me if I am missing out on something.
Thank You
You should to understand, what is Layout is. And especially Layout stretching. Have you seen it?
I am customizing the javafx charts a bit adding valuelabels etc above bars and sliding out certain parts of piecharts. The problem is some of the extras come outside of the visual area.
Is there a simple way to get piecharts to become smaller (but the chart component itself retain its size so that there is more empty space surround the pie?
The same issue with barcharts. I need more empty space above my vertical bars, and more empty space to the right of my horizontal bars.
All data in the table has Number(mostly BigDeicmal) for its value and String for its key and series.
I've created a line chart in flex and it works like expected. Now, I would like to add shading to the background for specific information. For example, this chart - http://research.stlouisfed.org/fred2/graph/?id=TOTALSL,TOTALNS, - shows a shaded background for recessions. How would I mimic this shading in a Flex linechart?
Thanks
You could draw it in the background of the chart using the drawing api.
edit:
I dont know of any code examples on the web, I've only done it in production code (aka I cant share it, sorry :( )
you will want to create a container and put it into the charts
<mx:backgroundElements>
You should pass into this container the min and max for the x-axis probably as separate properties and a dataprovider that describes when to show a highlighted section. You might have to compute the min and max based on the dataprovider you pass into the chart.
If you just want to show the highlighted area you will just use the drawing api and compute where to put on the x-axis based on your min, max, width of container, and data point (start and end values) from your dataprovider. It will look something like this in your updateDisplayList:
// code is not tested but a good start
var shadeStartX:Number = (max-min)/startPoint;
var shadeEndX:Number = (max-min)/endPoint;
var shadeWidth:Number = shadeEndX - shadeStartX;
...
this.graphics.drawRect(shadeStartX, 0, shadeWidth, unscaledHeight);
but if you want to have things like hover states and all that goodness I would suggest creating a display object that you pass the width in and adding that to the container at the computed x-axis to set it at.
Hi I feel that drawing something yourself is not the right way to go.
You should ideally use a PlotSeries inside the LineChart, and create a custom item renderer for each element in the series.
PlotSeries allows you to give your own custom image/object to draw at a specific date/point in the chart.
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/mx/charts/series/PlotSeries.html
http://livedocs.adobe.com/flex/3/html/help.html?content=charts_types_10.html
All the examples show the plotSeries with smaller objects but you can create an object which covers the chart vertically and has a constant width.
I am using the standard Flex 3 BubbleChart component and I would like to customize a couple of the grid lines separately from the rest.
I would like to highlight a gridline in the X-direction as well as in the Y-direction to show a quadrant.
Is there any way to customize the look and feel of a subset of gridlines within a Flex chart (i.e. bubble chart)?
Any ideas or suggestions would be appreciated.
Thanks!
Check out this two nice articles:
Using chart grid lines
Drawing on chart controls