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Re: Plot[], Show[] and ; in Version 6
*To*: mathgroup at smc.vnet.net
*Subject*: [mg76534] Re: Plot[], Show[] and ; in Version 6
*From*: Szabolcs <szhorvat at gmail.com>
*Date*: Wed, 23 May 2007 05:39:12 -0400 (EDT)
*Organization*: University of Bergen
*References*: <f2u4am$jnp$1@smc.vnet.net>
yasdfer at yahoo.com wrote:
> Since version 6.0 suppresses Plot/Show outputs with ; (semicolon), how
> do you plot and then do additional numerical (or graphical) outputs? I
> have a lot of existing notebooks that follow such pattern and I am
> hoping that there are some quick fixes.
>
> For example, the following would work in older version and not in 6:
>
> Block[{x=1,y=2},
> Plot[x,{x,0,1}];
> Print[Sqrt[y]];
> Plot[x^2,{x,0,1}]
> ]
>
> Thanks,
>
> -Victor
Hi Victor,
Try to avoid procedural approaches like this. You almost never need to
use Print[] in Mathematica (I only use it for debugging).
Instead of using explicit output functions, just return the results.
This is now possible with graphics in v6.
In 5.2 you did Do[Plot[Sin[k x], {x, 0, 2 Pi}], {k, 1, 5}].
Now change that to Table[Plot[Sin[k x], {x, 0, 2 Pi}], {k, 1, 5}].
Or instead of the example you gave with Block, use something like
With[{a=1, b=2},
{ Plot[a*x, {x,0,1}], Sqrt[y], Plot[b*x^2, {x,0,1}] }
]
If you really really want explicit output functions, you can use Print
with graphics. But I strongly suggest you avoid this. If you don't like
the layout of graphics when output as elements of a list, use
GraphicsColumn, GraphicsRow, GraphicsGrid, Grid etc.
Szabolcs
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