| [science-iwg] Plotting |
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FYI DAWN and NiCE working on plotting. Basics of getting started. From: Gerring, Matt (DLSLtd,RAL,LSCI)
Hi Jay, I will spam the lists with this reply providing you agree it is a good idea. Sorry I was away yesterday and did not respond
J Most of what I write about the plotting is available at
http://www.dawnsci.org/documentation/developer-guidelines The p2 site is at
http://opengda.org/DawnDiamond/master/updates/stable/. The interfaces can be checked out manually at dawn-eclipse on the dawnscience github. Firstly using a DoubleDataset. It has a constructor which takes the double[] and the shape. If 1D data, the shape is simply the length.
Peter Chang is the architect of the data system and can also advise you of more complex data needs. Mostly people get IDatasets from the LoaderService as in the examples but instantiating the concrete class is
allowed. For the plotting ‘org.eclipse.dawnsci.plotting.examples’ shows how to put plotting systems on view parts. Look at XYExample for a start. Here is what to do: 1.
Get the IPlottingService then use that to get an IPlottingSystem instance:
final IPlottingService pservice = ... // get a service
try {
this.system
= pservice.createPlottingSystem(); }
catch (Exception ne) { ne.printStackTrace();
// Or your favourite logging. } [The service implementation is in org.dawnsci.plotting.services.] 2.
Then you have to create the UI bits something like: system.createPlotPart(parent,
"XY Example", getViewSite().getActionBars(), PlotType.XY,
this); 3.
Now all you need to do is plot something. The correct full API for this is explained in the javadoc for IPlottingSystem. However there is a quick
method for 1D data which is:
system.createPlot1D(null,
Arrays.asList(myData), new NullProgressMonitor());
This will give you a 1D plot on which you may use the tools such a peak fitting etc. straight away. Providing that you have implemented getAdapter(...) in the part doing
the plotting as follows: public Object getAdapter(final Class clazz)
{ if (IPlottingSystem.class ==
clazz) return system; if (IToolPageSystem.class ==
clazz) return system; return super.getAdapter(clazz); } More information is available at
http://www.dawnsci.org/documentation/developer-guidelines Sincerely, Matt From: Jay Jay Billings [mailto:jayjaybillings@xxxxxxxxx]
Matt, My goal is to create a DoubleDataset and plot it. I plan to do this by including the DAWN plugins from the update site you created, instantiating and filling up a DoubleDataset and then passing it to one of NiCE's UI components which will
in turn pass it to the plotting engine from DAWN. I think it is in theory as simple as that, but I imagine in practice it will require more work. On Mon, Aug 11, 2014 at 6:26 AM, Jay Jay Billings <jayjaybillings@xxxxxxxxx> wrote: Matt, That would be fine. Jay On Aug 11, 2014 4:56 AM, <Matt.Gerring@xxxxxxxxxxxxx> wrote: Hi Jay, We spoke about the requirement to move IDataset last week. I will talk to the team about the best time to do this; I have threatened to do this already but with one thing and another
it has not happened. We might want to get Dawn 1.7 out of the door first, therefore it might not be until end September before we do the move. Would that fit with your plans? I would be willing to look at it before then, or alternatively you can use the old package and then change the package imports in late September. Sincerely, Matt -- This e-mail and any attachments may contain confidential, copyright and or privileged material, and are for the use of the intended addressee only. If you are not the intended addressee or an authorised recipient of the addressee please notify us of receipt
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Jay Jay Billings Oak Ridge National Laboratory Twitter Handle: @jayjaybillings |