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- Newsgroups: comp.dsp
- Path: sparky!uunet!netnews!warper.jhuapl.edu!gotwols
- From: gotwols@warper.jhuapl.edu (Bruce Gotwols)
- Subject: Re: High-level language/package for signal processing
- Message-ID: <gotwols.713750652@warper.jhuapl.edu>
- Sender: usenet@netnews.jhuapl.edu
- Organization: JHU/Applied Physics Laboratory
- References: <4272@inca.comlab.ox.ac.uk>
- Date: Fri, 14 Aug 1992 00:04:12 GMT
- Lines: 29
-
- I have used both IDl and Matlab for both signal processing and
- image processing. As others have correctly said, Matlab is stronger
- for signal processing and IDL for image processing. However, IDL has
- one important feature that caused me to settle on it for almost all of
- my work in both areas: It can handle bytes, 16 and 32 bit integers,
- floats, doubles, and complex. Matlab is restricted to only doubles and
- complex....a very severe restriction if you must work with huge arrays
- as I often do.
-
- IDL allows routines written in other languages such as C and Fortran to
- be hooked into it. Therefore, I write for instance, digital filter programs
- in C and then hook them into IDL at run time. I also have written a set of
- routines that allow me to manipulate Exabyte tape drives from within IDL (using
- the hooks mentioned above). This way I can analyze several Gbytes of radar
- signal data straight from tape without having to first put the data on disk.
- I do not know if this can be done from Matlab; perhaps someone will comment
- on this.
-
- There is an anonymous ftp site with hundreds of well written IDL routines
- of general interest. It is fermi.jhuapl.edu. Get into idl-pvwave and then
- the next level down which I think is called jhuapl. By the way, most of these
- routines will also run under pv-wave, but I prefer IDL.
-
- Regards, bruce
- --
- Bruce L. Gotwols
- Johns Hopkins University, Applied Physics Lab., Laurel MD 20723
- Internet: gotwols@warper.jhuapl.edu (128.244.27.2)
- SPAN: APLSP::STR::GOTWOLS
-