DQM monitor element of Th2poly #14
Open
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR introduces a new type of DQM MonitorElement, TH2Poly, for HGCal DQM in the future. This feature allows the display of polygonal histograms on the CMS DQM GUI. As a demonstration, a wafer map can be displayed like the screenshot here [1].
TH2Poly is a 2D histogram class inherited from TH2. Polygonal bins, defined by TGraph, can be loaded using the AddBin() method. After setting up the polygonal bins, a TH2Poly object can store information through Fill() or SetBinContent().
A workflow for creating polygonal histograms looks like this:
DQM Service -> DQM EDAnalyzer -> CMS DQM GUI
An implementation of TH2Poly in DQM Service and MonitorElement is necessary to display the polygonal histograms. It involves updates on two repositories: dqmgui_prod and cmssw. The idea is implemented in a user branch of cmssw [2]. From the branch, monitor elements of the TH2Poly object can be stored in a DQM root file [3]. We will prepare another pull request to cmssw soon.
A related issue to this PR can be found here, #13
@pfs, @hqucms
[1] https://ykao.web.cern.ch/ykao/raw_data_handling/hgcal_dqm_gui/screenshot_demo_th2poly_wafermap.png
[2] ywkao/cmssw@d9e70fc
[3] A DQM root file: /afs/cern.ch/work/y/ykao/public/example_HGCAL_DQM/DQM_V0001_HGCAL_R000123469.root