@henryiii, @JuanBSLeite

I'm getting some errors about a missing file 'files/DsPPP_TIS_PosTS_par_sPloted_large__MVA.root'. Can this file be provided under goofit_charm or another means? Thanks!

I was able to run with no extra files. Are you changing to the subdirectory after building and before running?

@galapaegos @henryiii
I'll fix it.

@henryiii @galapaegos

I've just fixed D2PPP.cpp code.

you can generate and fit a toy MC doing:

./D2PPP gen
./D2PPP fit

This is the expected result

I could be wrong, but don't you need to do:

-    dtoppp.resonances.push_back(rho_12);
-    dtoppp.resonances.push_back(omega_12);
-    dtoppp.resonances.push_back(f2_12);
-    dtoppp.resonances.push_back(sigma_12);
-    dtoppp.resonances.push_back(f0_980_12);
-    dtoppp.resonances.push_back(f0_1500_12);
-    dtoppp.resonances.push_back(nonr);
-    //dtoppp.resonances.push_back(swave_12);
+    //dtoppp.resonances.push_back(rho_12);
+    //dtoppp.resonances.push_back(omega_12);
+    //dtoppp.resonances.push_back(f2_12);
+    //dtoppp.resonances.push_back(sigma_12);
+    //dtoppp.resonances.push_back(f0_12);
+    //dtoppp.resonances.push_back(nonr);
+    dtoppp.resonances.push_back(swave_12);

to test it and get that result?

I've make a fork with changes to make it easier to test: https://github.com/henryiii/goofit_charm, PR here: JuanBSLeite/goofit_charm#1.

Also, you only need to run the ./D2PPP gen command to get that plot, fit not required (and the fit requires that background file).

The images are very similar, but the latest changes provide a smoother image. The Spline constructor now calculates the derivatives and copies them to the internal buffer.