| Author |
Comment/Response |
Jerry Easley
|
 10/07/98 9:24pm
When I load some packages I get enigmatic warning messages. For instanc;
<<DiscreteMath`ZTransform`
ZTransform[Sin[n], n, z]
InverseZTransform[%, z, n] // Together
I get the following warning messages:
ZTransform::''shdw'':
''Symbol \!\(\''ZTransform\''\) appears in multiple contexts \
\!\({\''DiscreteMath`ZTransform`\'', \''Global`\''}\); definitions in context \
\!\(\''DiscreteMath`ZTransform`\''\) may shadow or be shadowed by other \
definitions.''
and
InverseZTransform::''shdw'':
''Symbol \!\(\''InverseZTransform\''\) appears in multiple contexts \
\!\({\''DiscreteMath`ZTransform`\'', \''Global`\''}\); definitions in context \
\!\(\''DiscreteMath`ZTransform`\''\) may shadow or be shadowed by other \
definitions.''
The functions then don't work; I get output as follows:
Null ZTransform[Sin[n],n,z]
and
InverseZTransform[Null ZTransform[Sin[n],n,z],z,n]
Does anybody know how to fix this or why it happens?
Regards,
Jerry
URL: , |
|
