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- From: katherle@daisy.uwaterloo.ca (Kate Atherley)
- Subject: Re: MAPLE: Reading list of points from external file
- Message-ID: <BxvEKG.KLs@watdragon.uwaterloo.ca>
- Sender: news@watdragon.uwaterloo.ca (USENET News System)
- Organization: University of Waterloo
- References: <ROSE.92Nov10172623@t524i5.telematik.informatik.uni-karlsruhe.de> <1e93eeINNj59@pith.uoregon.edu>
- Distribution: sci
- Date: Tue, 17 Nov 1992 17:14:40 GMT
- Lines: 45
-
- In article <1e93eeINNj59@pith.uoregon.edu> joe@decoy.uoregon.edu (Joe St Sauver) writes:
- >In article
- ><ROSE.92Nov10172623@t524i5.telematik.informatik.uni-karlsruhe.de>
- >rose@t524i5.telematik.informatik.uni-karlsruhe.de (Ortwin Rose) writes:
- >>
- >> I have a list of points generated by another program, and would
- >> like to create a three-dimensional plot of the surface using
- >> MAPLE. Now, I did NOT find a solution to read these points from
- >> an external file into a list of points that can be used by
- >> "plots[pointplot]" within MAPLE! Since this is quite an easy
- >> task, I am quite sure that such a solution does exists. Any
- >> pointers how to proceed are appreciated!
- >
- >Ortwin,
- >
- >I am currently confronting a comparable problem -- I have a user with
- >huge matrices which he needs to manipulate.
- :
- >But, after extensively searching the new Springer Verlag Maple V
- >manual set, let me refer you to section 11.8.5 in the Maple V
- >Language Reference Manual:
- >
- > "It is not possible in the present version of Maple to read
- > arbitrarily formatted data [from a text file]." (pp. 191)
- >
- >That, to me, was just inconceivable, particularly for a package
- >which goes to some extreme to justify claims that it is a
- >"programming language." To me, anything which cannot read data
- >from a file in some relatively common format (i.e., free format,
- >comma delimited format, fixed format or SOMETHING other than
- >Maple-specific statement format) is NOT a programming language.
-
- I posted in response to the original user's questions, stating
- that there is a function, surfdata, in the Maple Share Library,
- available by anonymous ftp, that does exactly what the user wants
- to do.
-
- It is true that Maple V cannot read data files, without
- some massaging of the file into valid Maple statements.
- However, our latest release, Maple V Release 2 has addressed this
- problem, with the addition of the functions readline and sscanf.
-
- Kate
- Waterloo Maple Software Technical Support
- support@maplesoft.on.ca
-