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problem with drawing triangle:(Unbound-variable)

From: Huazhong Wang
Subject: problem with drawing triangle:(Unbound-variable)
Date: Sat, 07 Jan 2006 14:07:38 -0500
User-agent: Internet Messaging Program (IMP) H3 (4.0.4)


I am learning guile and scheme. I want to draw a triangle, but the machine always responsed me a warning. see below

guile>(define test-bb    (filled-triangle 0 1 0 -1 1 -1))
standard input:10:4: In expession (filled-triangle 0 1 ...):
standard input:10:4: Unbound variable: filled-triangle
ABORT: (Unbound-variable)

my system is debian.

Huazhong Wang

Department of Electrical and Computer Engineering
FAMU-FSU College of Engineering
Florida State Univerity

2525 Pottsdamer Street
Tallahassee, FL 32310

Email: address@hidden
Tel: (850) 410-6408 (office)


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