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Data Analysis with CMS | ||||||||
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The best place to start with an Analyzer is the SWGuide![]() | ||||||||
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> > | The CMSSW Unpacker as listed above is a good place to start looking at some source code examples. Another good example is the built in CMSSW analyzers that can be seen here![]() ![]() | |||||||
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#include <cmsswtools/unpacker/interface/FedEvent.hh> | ||||||||
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< < | as if the home directory (or ~/) is CMSSW_#_#_#/src. The same should be done with the source code for the user created libraries like can be seen in the previous example. | |||||||
> > | as if CMSSW_#_#_#/src is the home directory (or ~/). The same should be done with the source code for the user created libraries like can be seen in the previous example. | |||||||
Another place to look is at the built in libraries source code or even other peoples libraries/analyzers. A good place I have gathered a lot of information from is here![]() | ||||||||
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< < | Data | |||||||
> > | CMSSW VersionThis section is for determining what CMSSW version to choose for a specific data file and see the contents of the file. The data files are all root files and can be found using the procedures above. The main tools are the Event Data Model (edm). Entering edm on lxplus and then pressing tab twice will give a list of all the different edm tools. The two ones used more are edmProvDump which provides the CMSSW version used the create the file. This version should be the version you are using to do any of the analysis. The other tool is edmDumpEventContent which gives a list of the type of data contained in the file. This is explained in more detail in the analyzer section. Another option is to use a built in cmssw analyzer. An easy implementation of one is in this![]() ![]() | |||||||
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< < | This section is for determining what CMSSW version to choose for a specific data file and see the contents of the file. The data files are all root files and can be found using the procedures above. The main tools are the Event Data Model (edm). Entering edm on lxplus and then pressing tab twice will give a list of all the different edm tools. The two ones used more are edmProvDump which provides the CMSSW version used the create the file. This version should be the version you are using to do any of the analysis. The other tool is edmDumpEventContent which gives a list of the type of data contained in the file. This is explained in more detail in the analyzer section. | |||||||
> > | **The source code for DumpFEDRawDataProduct is a pretty simple one page analyzer because if only prints some data to screen so it is a very good reference. The site also provides pretty much all the source code for the analyzers. It may be quite complicated but very useful. | |||||||
Analysis |