TTree's uint64/int64 branches not displayed by JSROOT

[alessandrothea]

Hi @linev,

Thank you very much for having fixed the plotting with RNTuples and long integers in release 7.10.2.
I have just tested this new release on both an RNTuple and a TTree. Long integer branches are correctly plotted when using the RNTuple, but the plot remains empty when the branch is stored in a TTree.

I put an example here

https://cernbox.cern.ch/files/spaces/eos/user/t/thea/shares/root/jsroot-tuples/f_tree.root

that I tested using the JSROOT demo page (https://root.cern/js/latest/api.htm#url_syntax_open_file)

When doing so, and plotting the f_tree.root/triggerAna/TriggerPrimitives/tpmakerTPCSimpleThreshold__TriggerPrimitiveMaker;1/time_start branch I see the following error in the Chrome/Firefox javascript console:

    treeProcess https://root.cern/js/latest/modules/tree.mjs:2414
    treeDraw https://root.cern/js/latest/modules/tree.mjs:2919
    drawTree https://root.cern/js/latest/modules/draw/TTree.mjs:486
    performDraw https://root.cern/js/latest/modules/draw.mjs:420
    draw https://root.cern/js/latest/modules/draw.mjs:436
    display https://root.cern/js/latest/modules/gui/HierarchyPainter.mjs:2329

I hope this helps.

Cheers,
Alessandro

[linev]

Seems to be I cannot access your file.
Can you attach it here - by renaming into f_tree.root.txt

[alessandrothea]

Sorry about that.
Here it is:

f_tree.root.txt

[linev]

You are right - TLeafG (for Long_t values) was not in list of supported types.
I add small patch for master and 7.10 branch.

Same is true for Float16_t and Double32_t branches, but here support is little bit more tricky.
I will try to implement it as well

[alessandrothea]

Thank you @linev.
Is there a easy way for me to try the patched 7.10 branch so that I can provide feedback before the next released patch?

[linev]

You can checkout 7.10 branch and run local server like described here:

https://github.com/root-project/jsroot/tree/master/server

[alessandrothea]

Thanks @linev .
I was able to test the patch and confirm that TLeafG branches are plotted now.
Many thanks.

[linev]

Fix in 7.10.3 release