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changes.mady.by.user Andy Salnikov

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changes.mady.by.user Mikhail Dubrovin

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self.configBool(param_name[,default])

returns value of parameter as a boolean value, strings "yes", "true", "True", "on", "1" represent true value, strings "no", "false", "False", "off", "0" represent false value, any other string will raise exception. If parameter is not defined in a file then default value is returned without conversion, if default value was not given then exception is raised.

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self.configInt(param_name[,default])

returns value of parameter as integer value. If parameter is not defined in a file then default value is returned without conversion, if default value was not given then exception is raised. If conversion from string to integer fails the standard exception is raised.

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self.configFloat(param_name[,default])

returns value of parameter as floating point value. If parameter is not defined in a file then default value is returned without conversion, if default value was not given then exception is raised. If conversion from string to floating point fails the standard exception is raised.

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self.configStr(param_name[,default])

returns value of parameter as string. If parameter is not defined in a file then default value is returned without conversion, if default value was not given then exception is raised.

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self.configSrc(param_name[,default])

returns value of parameter as "source address" string. If parameter is not defined in a file then default value is returned without conversion, if default value was not given then exception is raised. This method does the same as self.configStr but it may also check correctness of the source string format.

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self.configListBool(param_name)

returns value of parameter as a list of boolean values. If parameter is not defined in a file then empty list is returned, otherwise every word in a parameter value is converted to boolean (according to same rules as defined for self.configBool) and all values are returned in one list.

self.configListInt(param_name)

returns value of parameter as a list of integers. If parameter is not defined in a file then empty list is returned, otherwise every word in a parameter value is converted to integers and all numbers are returned in one list. Conversion errors will raise exception.

self.configListFloat(param_name)

returns value of parameter as a list of floating point numbers. If parameter is not defined in a file then empty list is returned, otherwise every word in a parameter value is converted to float and all numbers are returned in one list. Conversion errors will raise exception.

self.configListStr(param_name)

returns value of parameter as a list of strings. If parameter is not defined in a file then empty list is returned, otherwise parameter value is split into words which are returned in one list.

self.configListSrc(param_name)

returns value of parameter as a list of "source address" strings. If parameter is not defined in a file then empty list is returned, otherwise parameter value is split into words which are returned in one list.

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Pyana was designed based on pdsdata and myana and originally provided methods of data access which looked similar to those defined in myana. In particular event object provided a number of specialized methods for some (but not all) individual data types, e.g. evt.getAcqValue(address,channel,env) for accessing Acqiris data, evt.getFeeGasDet() for accessing FEE gas detector data. In addition to these specialized methods there is a generic method evt.get(typeIdTypeId, address) which can be used to retrieve any type of data. There are two "overloads" of this method:

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Code Block
from pypdsdata import xtc
......
        src = self.configSrc('source', '')
        data = evt.get(xtc.TypeId.Type.Id_FEEGasDetEnergy, src)
        if data:
            print "  f_11_ENRC =", data.f_11_ENRC
Note

The list of currently available TypeId can be seen in the file TypeId.cpp.
The list of Sources available in xtc file can be obtained by the command:
psana -m EventKeys <path-to-xtc-file>

Event data access in psana

...