[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Axiom-math] Axiom: Printing multiple variables in axiom.
From: |
Constantine Frangos |
Subject: |
Re: [Axiom-math] Axiom: Printing multiple variables in axiom. |
Date: |
Sun, 11 Nov 2007 22:10:20 +0200 |
I am getting the result below for y.
However, the output I actually want is:
"cos(x2) + 2*x1"
or even better,
cos(x2) + 2*x1
Is this possible ?
Regards,
C. Frangos.
(42) -> y
(42) ->
(42) cos(x2) + 2x1
Type: Expression Integer
(43) -> unparse(y::INFORM)
(43) ->
(43) "DCOS(x2)+2*x1"
Type: String
(44) -> unparse(y::INFORM)::OUTFORM
(44) ->
(44) "DCOS(x2)+2*x1"
Type: OutputForm
(45) ->
On Saturday 10 November 2007 13:11, Martin Rubey wrote:
> Constantine Frangos <address@hidden> writes:
> > Hi Martin,
> >
> > Thanks for the reply. I tried your suggestion and this works perfectly -
> > the inverted commas are ok.
> >
> > I tried your suggestion from a previous email to get axiom expressions in
> > the form: 2*x1 instead of 2x1.
>
> why do you want to coerce the result of unparse (which is a string) to
> OUTFORM? Note that unparse takes something of type InputForm, so you'll
> have to coerce y to INFORM before passing it to unparse. The error message
> is telling you exactly this.
>
> Martin
>
> > (9) -> y
> > (9) ->
> > (9) cos(x2) + 2x1
> > Type: Expression
> > Integer (10) -> unparse(y)::OUTFORM
> > There are no exposed library operations named unparse but there is
> > one unexposed operation with that name. Use HyperDoc Browse or
> > issue
> > )display op unparse
> > to learn more about the available operation.
> >
> > Cannot find a definition or applicable library operation named
> > unparse with argument type(s)
> > Expression Integer
> >
> > Perhaps you should use "@" to indicate the required return type,
> > or "$" to specify which version of the function you need.
> > (10) ->
> >
> > On Friday 09 November 2007 20:41, Martin Rubey wrote:
> > > Constantine Frangos <address@hidden> writes:
> > > > In the function below, I tried to use the following commands
> > > >
> > > > )display value Acon
> > > > print(['Acon = Acon])
> > > >
> > > > to print one or more variable.
> > > >
> > > > However, I get very strange behaviour and error messages, so had to
> > > > comment them out. There might be a bug somwhere in my program.
> > > >
> > > > If an axiom expert could implement a simplified version of the Maxima
> > > > display() function (probably a lisp function) in lisp/axiom, then
> > > > this would be very useful.
> > > >
> > > > In Maxima:
> > > >
> > > > x1:1;
> > > > x2:2;
> > > > x3:3;
> > > > display(x1,x2,x3); ->
> > > > x1 = 1
> > > > x2 = 2
> > > > x3 = 3
> > >
> > > Well, axiom functions always evaluate all it's arguments first. So,
> > > for debugging I usually use
> > >
> > > output ["x1: ", x1, " x2: ", x2]
> > >
> > > If you want cleaner output, you'll have to look into OutputForm. For
> > > example, to print a string without the quotes, you can use
> > > message$OUTFORM:
> > >
> > > (1) -> message("1")$OUTFORM
> > >
> > > (1) 1
> > > Type:
> > > OutputForm
> > >
> > > At least for expressions there is a way to quote and unquote, but I
> > > don't have it present right now.
> > >
> > > Martin
> >
> > --
- [Axiom-math] Axiom: Printing multiple variables in axiom., Constantine Frangos, 2007/11/08
- Re: [Axiom-math] Axiom: Printing multiple variables in axiom., Martin Rubey, 2007/11/09
- Re: [Axiom-math] Axiom: Printing multiple variables in axiom., Constantine Frangos, 2007/11/10
- Re: [Axiom-math] Axiom: Printing multiple variables in axiom., Martin Rubey, 2007/11/10
- Re: [Axiom-math] Axiom: Printing multiple variables in axiom.,
Constantine Frangos <=
- Re: [Axiom-math] Axiom: Printing multiple variables in axiom., Bill Page, 2007/11/11
- Re: [Axiom-math] Axiom: Printing multiple variables in axiom., Martin Rubey, 2007/11/12
- Re: [Axiom-math] Axiom: Printing multiple variables in axiom., Constantine Frangos, 2007/11/12
- Re: [Axiom-math] Axiom: Printing multiple variables in axiom., Bill Page, 2007/11/12
- Re: [Axiom-math] Axiom: Printing multiple variables in axiom., Bill Page, 2007/11/12
- [Axiom-math] Axiom: Printing multiple variables in axiom., Constantine Frangos, 2007/11/13
- [Axiom-math] Re: Axiom: Printing multiple variables in axiom., Bill Page, 2007/11/13
- [Axiom-math] Axiom: Installing Aldor, Constantine Frangos, 2007/11/13
- Re: [Axiom-math] Axiom: Installing Aldor, Ralf Hemmecke, 2007/11/13
- [Axiom-math] Aldor: Installing Aldor, Constantine Frangos, 2007/11/13