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Submitted by : (unknown) at: 2007-11-17T22:01:39-08:00 (9 years ago)
Name :
Axiom Version :
Category : Severity : Status :
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Empty one dimensional arrays are printed but no empty two dimensional array in console.

Text Mode
empty Matrix not printed

fricas
)set output algebra on
 
fricas
)set output tex off

fricas
empty()$Vector(INT)
(1) []
Type: Vector(Integer)
fricas
empty()$Matrix(INT)
(2) []
Type: Matrix(Integer)

LaTeX mode
empty Matrix causes error

fricas
)set output algebra off
 
fricas
)set output tex on

fricas
empty()$Vector(INT)

\label{eq1}\left[ \right](1)
Type: Vector(Integer)
fricas
empty()$Matrix(INT)

\label{eq2}\left[ \right](2)
Type: Matrix(Integer)

property change --kratt6, Thu, 23 Jun 2005 06:32:24 -0500 reply
Category: general => Axiom User Interface

I investigated a little further:
fricas
)se ou tex off
 
fricas
)se ou al on
(matrix [[1,2]])::OUTFORM pretend SEX
(5) (MATRIX () (ROW 1 2))
Type: SExpression?
fricas
(empty()$Matrix INT)::OUTFORM pretend SEX
(6) (BRACKET (AGGLST))
Type: SExpression?

fricas
matrix []
(7) matrix
Type: Symbol

could be equivalent to empty()$Matrix INT. On the other hand, the interpreter has no way to determine the type of this matrix, so the error is probably OK.

fricas
matrix [[]]
(8) matrix NONE
Type: Symbol

does indeed not make any sense at all.

Status: open => closed




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