How to plot the projection of 2D fit in the binning of other variable

[chanchal]

Dear Expert,

I was trying to do a 2D fit (of “m” and “errm”) but this is not coming out correctly.
To find out the reason behind this I want to plot the projection of “m” fit in the different binning of “errm”. so I am trying to do with following changes:
dataxy->plotOn(xframe, CutRange(“SB2”));
const double nData = dataxy->sumEntries(" ", “SB2”);
pdf.plotOn(xframe,Components(gauss),LineStyle(kDashed),LineColor(kRed), ProjWData(*dataxy), Normalization(nData, RooAbsReal::NumEvent), ProjectionRange(“SB2”));

if case you refer, Here is the folder that I am using:
projection_2D.zip (646.5 KB)

I am not sure this is giving me the right result.
Please help me to sort it out.

Thanks in advance.

Regards
Chanchal

[couet]

Your macro gives me the following plot. Is it what you get also ? I guess @moneta can help.

[chanchal]

Hi @couet ,

yes, Here I have tried to get the projection of “m” in the bin 0 to 0.0031 of “errm”.
but I think this is giving me total fit (blue) also and I am getting pull distribution for only a part of the range (left side and right side).

I think somewhere, I am doing some mistake.

Thanks
Chanchal

[chanchal]

Hii @couet and @moneta,

I am able to improve the pull distribution but still total fit (blue) is there.

Can you please help me to fix this?

Now updated code is here:
projection_2D_new.zip (647.5 KB)

Regards
Chanchal

[couet]

@chanchal

but still total fit (blue) is there

Do you need this ?

If yes, simply remove the line:

pdf.plotOn(xframe, ProjWData(*dataxy), CutRange("SB2"));

[moneta]

Hi,
CutRange is not a valid option for plotting RooAbsPdf. You should use ProjectionRange
You might also need to provide the correct normalisation as written in ROOT: RooAbsData Class Reference in case you get wrong normalisation

Cheers

Lorenzo

[chanchal]

Hii,

Yes, I need this. thanks.

Regards
Chanchal