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XMM-Newton Science Analysis System Page: 1
dsnullify
August 16, 2005
Abstract
Set all data elements in an object to null This task is part of the daltools package
1 Instruments/Modes
Instrument Mode
2 Use
3 Description
Set all data elements in an object to null
Sets all the elements in each of the given objects to null. The null value must be dened, otherwise an
error will occur. The null value of an object can be set with dssetnullvalue.
4 Parameters
This section documents the parameters recognized by this task (if any).
Parameter Mand Type Default Constraints
objects yes StringList
List of fully qualied set, table, column and/or array names
xmmsas 20050815 1803-6.5.0

XMM-Newton Science Analysis System Page: 2
5 Errors
This section documents warnings and errors generated by this task (if any). Note that warnings and
errors can also be generated in the SAS infrastructure libraries, in which case they would not be docu-
mented here. Refer to the index of all errors and warnings available in the HTML version of the SAS
documentation.
6 Input Files
1.
7 Output Files
1.
8 Algorithm
9 Comments

10 Future developments
References
xmmsas 20050815 1803-6.5.0