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monitor2885

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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

ÎÒÏëÕÒµ½x=2.5ʱ£¬ÇúÏßÉϵÄÖµ£¬ÇëÎÊÔõô°ì£¿
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Retirement
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xiegangmai

°æÖ÷ (Ö°Òµ×÷¼Ò)

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ÒýÓûØÌû:
3Â¥: Originally posted by monitor2885 at 2012-01-14 03:53:31:
Ôõô²åÖµ°¡£¿Ôõôд³ÌÐò£¿

help interp1
Àý£º
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' )

Ã÷µÂºñѧ¡¢ÇóÊÇ´´ÐÂ
4Â¥2012-01-14 21:50:24
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 7 ¸ö»Ø´ð

wildblow

ľ³æ (СÓÐÃûÆø)

¡ï
xiegangmai(½ð±Ò+1): лл²ÎÓ룡 2012-01-13 22:48:44
ÎÒ¾õµÃ²åÖµ¿ÉÒÔ°É
2Â¥2012-01-13 21:34:08
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

monitor2885

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

¶Ó³¤

ÒýÓûØÌû:
2Â¥: Originally posted by wildblow at 2012-01-13 21:34:08:
ÎÒ¾õµÃ²åÖµ¿ÉÒÔ°É

Ôõô²åÖµ°¡£¿Ôõôд³ÌÐò£¿
Retirement
3Â¥2012-01-14 03:53:31
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

monitor2885

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

¶Ó³¤

ÒýÓûØÌû:
Â¥: Originally posted by xiegangmai at 2012-01-14 21:50:24:
help interp1
Àý£º
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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