Extracting signal shape from templates?

[eandread]

Hi all,

since i’m pretty unfamiliar with RooFit i would like to ask the following:

I have let’s say 2 templates saved in a workspace with fitted data, signal & bkg shapes
How can i extract the shape of signal (a RooAddPdf *signal for example) from all these different workspaces
so that i can create a plot with the superimposed signal shapes of all?

I tried to create a new workspace and import the workspaces from my .root files this way:

templates_workspace.root:w:*signa");

where w is the workspace i’ve created in the templates_workspace.root file
and then plotting it:

 RooPlot *frame = signal->frame();
  signal->plotOn(frame);
  frame->Draw();

but it doesn’t work at all

Any help would be much appreciated!
Thanks,
Emma

[Axel]

Hi Emma,

I’ve asked @moneta for help. While waiting for his answer: did you post the first code snippet correctly? The code after

@eandread

I tried to create a new workspace and import the workspaces from my .root files this way:

looks cut off. Can you check and if needed edit it (using the light gray pen below your post)?

And for the future: if you enclose code by `code` - i.e. backticks, and multiple lines by a line of ``` before and after, then your code becomes much more readable. See how I edited you post above.

Cheers, Axel.