The Unit size of axes when do the plotting

Could you give me some code? I tried, but no change.

xrange:[-2,2];
yrange:[-2,2];
plot2d ([parametric, cos(t), sin(t), [t,-%pi,%pi],
      [nticks,100]], [x, -4/3, 4/3])$



2009/2/22 Xiang Liu <hsiang.liu at gmail.com>

> You can specify the xrange and yrange for your purpose.
> I remember that the help for plot2d explain this carefully with an example.
>
> We can plot a circle using a parametric plot with a parameter t. It is not
>> necessary to give a range for the horizontal range, since the range of the
>> parameter t determines the domain. However, since the graph's horizontal
>> and vertical axes lengths are in the* 4 to 3 proportion*, we will use the
>> xrange option to obtain the same scaling in both axes:
>>
>> (%i8) plot2d ([parametric, cos(t), sin(t), [t,-%pi,%pi],
>>       [nticks,80]], [x, -4/3, 4/3])$
>>
>> But Who know how to set the aspect radio globally, so we don't have to
> adjust it every time when using plot2d.
>
>
> On Sun, Feb 22, 2009 at 12:43 PM, Wen Xi <seahalo at gmail.com> wrote:
>
>> Hi, guys,
>> When I do the plotting in Maxima, the unit size of X,Y axes are not the
>> same length. It seems that the unit size of each axis was adjusted by Maxima
>> automatically.
>>
>> The result is the curve drawing effect is not the same as the exact effect
>> of the eal world and distorted.
>>
>> Is there some option to make the unit size of every axis are the same?
>>
>>
>>
>>
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>>
>