SigProc 2.9.5 with Mathematica 3.0.x
- To: mathgroup at smc.vnet.net
- Subject: [mg15951] SigProc 2.9.5 with Mathematica 3.0.x
- From: "edx at cc.usu.edu"@cc.usu.edu
- Date: Wed, 17 Feb 1999 23:34:11 -0500
- Sender: owner-wri-mathgroup at wolfram.com
Relay-Version: ANU News - V6.2.0 06/23/97 OpenVMS AXP; site cc.usu.edu Subject: [mg15951] SigProc 2.9.5 with Mathematica 3.0.x From: edx at cc.usu.edu To: mathgroup at smc.vnet.net I'm using the SigProc 2.9.5 notebook, and seem to be having a little problem under Mathematica 3.0, particularly with the Convolution methods. For example, when this simple expression is evaluated, it falls over with an error: > longconv=DTPiecewiseConvolution[Step[n],Exp[-n] Step[n],n] > "Support module has been loaded." > "The knowledge base of signal processing operators has been loaded." > "Piecewise convolution rules have been loaded." > > SymbolicSum::"obslt": > "All SymbolicSum functionality is now autoloaded. The package > Algebra`SymbolicSum` is obsolete." > > Needs::"nocont": > "Context \!\(\"Algebra`SymbolicSum`\"\) was not created when Needs was > evaluated." Evidently, there is no "Algegra/SymbolicSum" in version 3.0. Has anyone modified this package (I believe the actual error is located in the "Support/Convolution.m" package) to work with Mathematica 3.0? Can anyone make suggestions how I might modify this package to work with Mathematica 3.0? I'd appreciate any suggestions. Thanks, edx at cc.usu.edu