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x=1:1:10; %10¸öºá×ø±ê
y=2*x+3;
plot(x,y)

y(find(x==2.5))

ans =
   Empty matrix: 1-by-0

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xiegangmai

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Â¥: Originally posted by monitor2885 at 2012-01-19 06:22:19:
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wildblow

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monitor2885

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2Â¥: Originally posted by wildblow at 2012-01-13 21:34:08:
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3Â¥2012-01-14 03:53:31
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3Â¥: Originally posted by monitor2885 at 2012-01-14 03:53:31:
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help interp1
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CODE:
x = 1 : 1 : 10; %10¸öºá×ø±ê
y = 2 * x + 3;
plot( x, y )

yi = interp1( x, y, 2.5 );
hold on
plot( 2.5, yi, 'ro' )

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