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11Â¥2009-09-19 07:55:18
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yeyunxiao

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Originally posted by seebrightplan at 2009-9-19 07:55:
Matlab×÷³öµÄͼÄܽ«ÀëÉ¢µã³éÈ¡³öÀ´Âð£¿
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»­Ò»¸öÔ²  'x^2+y^2=1'

ezplot('x^2+y^2=1');
xdata = get(get(gca,'Children'), 'XDATA');
ydata = get(get(gca,'Children'), 'YDATA');

ÕâʱºòÄãÓÃplot(xdata,ydata)»­³öÀ´¸úezplot('x^2+y^2=1')ÊÇÒ»ÑùµÄ


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»­Ò»¸öÍÖÇò  x^2 / 4 + y^2 + z^2 = 1
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x = r*cos(s) , y = r*sin(s) ´úÈëÍÖÇò·½³Ì
µÃµ½ r = sqrt( (1 - z^2) / (  ( cos(s) )^2  / 4 +  ( sin(s) )^2   ) )

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x = 'cos(s) * sqrt( (1 - z^2) / (  ( cos(s) )^2 / 4 + ( sin(s) )^2  ) )';
y = 'sin(s) * sqrt( (1 - z^2) / (  ( cos(s) )^2  / 4 + ( sin(s) )^2   ) )';
z = 'z';
ezsurf(x, y, z, [0, 2*pi, -1, 1]);
xdata = get(get(gca,'Children'), 'XDATA');
ydata = get(get(gca,'Children'), 'YDATA');
zdata = get(get(gca,'Children'), 'ZDATA');

ÕâʱºòÄãÓÃsurf(xdata,ydata,zdata)»­³öÀ´¸úezsurf(x, y, z, [0, 2*pi, -1, 1]);ÊÇÒ»ÑùµÄ

[ Last edited by yeyunxiao on 2009-9-19 at 13:21 ]
12Â¥2009-09-19 13:17:31
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seebrightplan

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xiao2000

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jjdg

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Originally posted by seebrightplan at 2009-9-19 19:06:
ллyeyunxiao,ÎÒµÄÒâ˼ÊÇÈçºÎ»ñµÃÀëÉ¢µã£¬µ¼ÈëEXCEL¡£

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