When Nans are stored in TBranch, VS code does not display the branch at all

[abhijitm08]

When a TBranch has a value of Nan stored (due to failing fits, etc), VS code does not display the branch at all.

To get around this one has to apply a cut TRUEPT != TMath::QuiteNan().

I believe this is not an issue when plotting with plain ROOT TBrowser but when displaying within VS code.

Would appreciate it if this could be fixed.

[AlbertoPdRF]

Hi @abhijitm08 and thanks for opening the issue! Could you provide a sample ROOT File so I can reproduce this? Thanks!

[abhijitm08]

@AlbertoPdRF Thank you for the quick response. The ROOT file is at the CERN box. I just noticed that the CERN box ROOT viewer has the same behaviour as VS code browser.

When I do: tree->Draw("Branch1"), I get:

When I open TBrowser t, I get:

In VS code and the CERN box ROOT viewer I get:

[AlbertoPdRF]

I can also replicate the issue online in https://jsroot.gsi.de/latest/api.htm#url_syntax_open_file, so I'm CC'ing @linev.

[linev]

Yes, NaN values where not handled correctly with TTree::Draw. Now fixed in dev and 7.4 branch.

[abhijitm08]

Yes, NaN values where not handled correctly with TTree::Draw. Now fixed in dev and 7.4 branch.

Thank you for the reply. Would be awesome if this gets fixed in the new release of root-file-viewer.

[linev]

Now available with https://github.com/root-project/jsroot/releases/tag/7.4.2 release

[AlbertoPdRF]

Awesome @linev! I'll publish a release with JSROOT v7.4.2 soon 🚀