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    1.  µÚÒ»¸ö³ÌÐò£ºÃ¿Ò»¸öx¶ÔÓ¦µÄy×î´óÖµ¡£³ÌÐòÖÐÓÃÁËÁ½¸öforÓï¾ä£¨Ç¶Èëʽ£©£¬µÚÒ»¸öÑ­»·-È¡µÃËùÓеÄÁУ¬µÚ¶þ¸öÑ­»·-ÕÒµ½ÓëµÚÒ»¸öÑ­»·Ê±µÄxÖµÒ»ÑùµÄÆäËûÁС£

    2.   µÚ¶þ¸ö³ÌÐò£ºÔÚÒ»¸öÐ¡ÇøÓòÄÚdx=0.3£¬ÄÚ£¬ÇóyµÄ×î´óÖµ¡£ËùÓеÄ×ÓÇøÓò¹¹³ÉÒ»¸öÍêÕûÇøÓò0¡«20£¨µÚÒ»¸ö×ÓÇøÓòΪ0¡«0.3£¬µÚ¶þ¸ö×ÓÇøÓòΪ0.3¡«0.6£¬µÚÈý¸ö×ÓÇøÓòΪ0.6¡«0.9£¬ÒÀ´ÎÀàÍÆ .....£©¡£ÔÚÿ¸ö×ÓÇøÓòÄÚµÄD£¨1£¬j£©¿ÉÄÜ»áÓкܶ࣬»òÕßûÓС£ËùÒÔÎÒÔÚ³ÌÐòÖÐÌí¼ÓÁËforÓï¾äºÍifÓï¾ä½øÐÐÁ˲éÕÒºÍÏà¹ØÃüÁî¡£

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dbb627

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ben_ladeng: ר¼Ò¿¼ºË´æµµ 2011-11-11 00:28:35
³ôË®¹µ(½ð±Ò+1): лл½»Á÷~~ 2011-11-11 12:43:00
ÄãÕâ¸ö±íÊöÓеãÎÊÌâ°É£¬ÇóyµÄ×î´óÖµ£¬ÓÐÒâÒåÂð£¬Òò¸ÃÊÇÇóµÚÈýÁÐζȵÄ×î´óÖµ£¬¼°¶ÔÓ¦yµÄ×ø±êÖµ°É¡£
The more you learn, the more you know, the more you know, and the more you forget. The more you forget, the less you know. So why bother to learn.
2Â¥2011-11-10 23:26:09
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

huangfumin

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2Â¥: Originally posted by dbb627 at 2011-11-10 23:26:09:
ÄãÕâ¸ö±íÊöÓеãÎÊÌâ°É£¬ÇóyµÄ×î´óÖµ£¬ÓÐÒâÒåÂð£¬Òò¸ÃÊÇÇóµÚÈýÁÐζȵÄ×î´óÖµ£¬¼°¶ÔÓ¦yµÄ×ø±êÖµ°É¡£

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        µÚÒ»¸ö³ÌÐòÏëÔÚÖÚ¶àx,yÊý¾ÝÖУ¬ÕÒµ½ÔÚÌØ¶¨x£¨Ò²ÊÇÕë¶ÔÓÚµÚÒ»ÐеÄÊý¾Ý£©ÏµÄ×î´óyÖµ¡£µÚÒ»¸öforÓï¾äÈ·¶¨Á˵±Ç°µÄD(1,j)ÁУ¬Ç¶ÈëʽµÄforÓÃÓÚ²éÕÒÓëÉÏÒ»¼¶µÄxÏàͬʱ¶ÔÓ¦µÄÁУ¬Èç¹ûÏàͬµÄ»°£¬È»ºóÔÚ¶ÔÆäy½øÐбȽϣ¬²¢±£Áô½Ï´óÖµ¡£ÓÉÓÚÁ½¸öforÓï¾ä¶¼ÊǶÔj½øÐÐÁË£¬ËùÒÔÔÚµÚ¶þ¸öfor֮ǰ¶ÔµÚÒ»¼¶µÄÁÐÊýj½øÐб£Áô£¨¸³Öµ¸øÒ»¸öеIJÎÊý£©£¬²¢ÔÚµÚ¶þ¼¶forÓï¾äÖ®ºó£¬½øÐзµ»Ø£¨½«Ð²ÎÊýµÄ±£ÁôµÄjÖµÔÙ¸ø»Ø¸øj£©¡£µ«³ÌÐòÒ²ÓкÜÑÏÖØµÄÎÊÌ⣬»¹ÍûÖ¸µã£¬Ð»Ð»¡£

      µÚ¶þ¸ö³ÌÐòÏ£ÍûÔÚdx×ÓÇøÓòÇóy×î´óÖµ¡£½«×ܵĵÄxÇøÓò0¡«20»®·ÖΪºÜ¶à×ÓÇøÓò£¬Ã¿¸ö×ÓÇøÓòµÄ¿í¶ÈΪdx¡£Èç¹ûÁî²ÎÊýx3=0(ÓÃÓÚÈ·¶¨·¶Î§)£¬ym=0£¨ÓÃÓÚÕÒµ½×î´óyÖµ£©£¬ ÐèÒªÔÚDÊý¾ÝµÄD(1£¬j)½øÐбéÈ¡£¨ËùÒÔÓÃÀ´Ò»¸öforÓï¾ä£©£¬ ²¢ÅжÏD(1£¬j)ÊÇ·ñÔÚx3~x3+dx¼ä£¬Èç¹ûÔÚ£¬ÇÒymСÓÚD(2,j)µÄ»°£¬Ôò½«D(2,j)µÄÖµ¸³¸øym£¬ÕâÑùym¾Í±£Áô×îÖµµã¡£Í¬Ê±ÓÉÓÚÿ´Î¾Í½øÐÐÁËÒ»¸ö×ÖÇøÓòÅжϣ¬ËùÒÔÓÐÒ»¸öwhileÓï¾ä£¬Ê¹µÃËùÓеÄ×ÓÇøÓòdx¹¹³ÉÁË×ܵÄxÇøÓò£¨0¡«20£©¡£µ«ÎÒµÄÄǸö³ÌÐòÓÐЩÎÊÌ⣬һֱ¶¼Ã»ÓÐÕÒ³öÀ´¡£»¹Íû°ï濴һϣ¬Ð»Ð»¡£
3Â¥2011-11-11 10:56:21
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

dbb627

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¡ï ¡ï ¡ï
³ôË®¹µ(½ð±Ò+3): ллӦÖú~~ 2011-11-11 15:37:28
huangfumin(½ð±Ò+3): лл°æÖ÷ÁË¡£ 2011-11-12 09:31:06
µÚÒ»ÎÊ£»
CODE:
load data.mat
D1=D';
x=D1(:,1);y=D1(:,2);
[B,I,J] = unique(x);%È¥µôÖØ¸´x
clear I J D D1
  yb=[];
for i=1:length(B);
     k=find(x==B(i));%²éÕÒÖØ¸´µÄx
     yb(i)=max(y(k));%²éÕÒÖØ¸´µÄx¶ÔÓ¦yµÄ×î´óÖµ
end
plot(B,yb)



The more you learn, the more you know, the more you know, and the more you forget. The more you forget, the less you know. So why bother to learn.
4Â¥2011-11-11 15:06:02
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

dbb627

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï
³ôË®¹µ(½ð±Ò+3): ллӦÖú~~ 2011-11-11 15:37:40
huangfumin(½ð±Ò+2): лл°æÖ÷ÁË¡£ 2011-11-12 09:31:15
µÚ¶þÎÊ B,ybÀ´×ÔµÚÒ»ÎÊ
[code]
yb=yb¡®;
[X,I]=sort(B,1,'ascend');
Y=yb(I);
dx=0:0.3:20;
n=length(dx)-1;
ym=[];
for i=1:n
     kx=find(X>dx(i)&X<=dx(i+1));
     ym(i)=max(Y(kx));
end
plot(dx(2:end),ym)
[code]


The more you learn, the more you know, the more you know, and the more you forget. The more you forget, the less you know. So why bother to learn.
5Â¥2011-11-11 15:25:36
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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