Re: external-graphic import error

[Norman Walsh <ndw@xxxxxxxxxx>]

/ "Darrell W. Royter" <droyter@xxxxxxxxxxxxxxx> was heard to say:
| Yesterday, Brandon graciously gave me this peice of code to use for
| importing an external graphic (thank you, Brandon).
| 
| (element artwork (make external-graphic entity-system-id:
|     (string-append (attribute-string "FILE") ".jpg")))
| 
|    This assumes that <artwork> has a "file" attribute containing the
| name of the image file without the ".jpg" extension.
| 
| I tried this and got an error stating that the 1st argument for primitive
| "string-append" of wrong type: "#f" not a string.

Can you show us a small source snippet? Is it possilbe that
you're using XML (or a case-sensitive SGML DTD) and 'file' is in
lowercase?  Anyway the #f error you've got is a clear indication
that (attribute-string "FILE") isn't finding a FILE attribute or
it doesn't have a value.

                                        Cheers,
                                          norm

-- 
Norman Walsh <ndw@xxxxxxxxxx>      | "Abstraction, abstraction and
http://nwalsh.com/                 | abstraction." This is the answer
                                   | to the question, "What are the
                                   | three most important words in
                                   | programming?"--Paul Hudak


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