²é¿´: 634  |  »Ø¸´: 3
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

lingsx

ľ³æ (ÕýʽдÊÖ)

[ÇóÖú] matlab±à³ÌÎÊÌâ

½¨Á¢ÁËÒ»¸öº¬ÓÐN¸öÔªËØµÄÈýάÊý×飬ÏëËæ»úµÄ°ÑÆäÖÐ20%*N¸öÔªËØµÄÖµ±äΪÁ㣬ÇëÎÊÓÃMatlabÔõôʵÏÖÄØ£¬Çë¸÷λ´óÉñ°ï棡
»Ø¸´´ËÂ¥

» ÊÕ¼±¾ÌûµÄÌÔÌûר¼­ÍƼö

matlabѧϰ

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Ò¶Ææ·¼

½ûÑÔ (³õÈëÎÄ̳)

jjdg: Ó¦ÖúÖ¸Êý-1, ÆÁ±ÎÄÚÈÝ 2013-07-24 09:28:47
±¾ÌûÄÚÈݱ»ÆÁ±Î

4Â¥2013-07-24 09:20:58
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 4 ¸ö»Ø´ð

somomo91

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
jjdg: ½ð±Ò+1, ¸Ðл²ÎÓë 2013-07-24 09:27:43
jjdg: ±à¼­ÄÚÈÝ 2013-07-24 09:28
Õâ¸öÎÊÌ⣬¿ÉÒÔÓñ¿°ì·¨ÂýÂý½â¾ö
µ«ÊÇ£¬Ò²¿ÉÒÔÓÃMATLABµÄÒ»¸öº¯Êý datasample £¬¸ü¼ò½à
ÕâÄãºÃÔË£¡
=========================
CODE:
clear; close all; clc
n = 10;
m = ones(n, n, n);
N = length(m( : ));
mTemp = reshape(m, 1, N);

[m1,idx] = datasample(mTemp, round(N*0.2));
mTemp(idx) = 0;
mNew = reshape(mTemp, n, n, n);

=========================
mNew ÊǾ­¹ýÌæ»»ºóµÄРm

[ Last edited by jjdg on 2013-7-24 at 09:28 ]
2Â¥2013-07-23 20:24:40
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

lingsx

ľ³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by somomo91 at 2013-07-23 20:24:40
Õâ¸öÎÊÌ⣬¿ÉÒÔÓñ¿°ì·¨ÂýÂý½â¾ö
µ«ÊÇ£¬Ò²¿ÉÒÔÓÃMATLABµÄÒ»¸öº¯Êý datasample £¬¸ü¼ò½à
ÕâÄãºÃÔË£¡
=========================
clear; close all; clc
n = 10;
m = ones(n, n, n);
N = length(m( : ));
mT ...

¸Ðл°ïÖú£¬ÔõôËÍÄã½ð±Ò°¡£¬ÏµÍ³×Ô¶¯ËÍô£¿
3Â¥2013-07-23 22:00:09
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤Çóµ÷¼Á +6 Ϊѧ666 2026-03-16 6/300 2026-03-17 20:15 by peike
[¿¼ÑÐ] 070300»¯Ñ§319Çóµ÷¼Á +4 ½õÀð0909 2026-03-17 4/200 2026-03-17 18:21 by ÖØ¿ÆÐ¡°ÔÍõ
[¿¼ÑÐ] 302Çóµ÷¼Á +9 ¸ºÐÄÕßµ±Öï 2026-03-11 9/450 2026-03-17 17:13 by ruiyingmiao
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤304ÇóBÇøµ÷¼Á +7 Çñgl 2026-03-11 8/400 2026-03-17 09:36 by ŬÁ¦Ñ§Ï°×¬²ÊÀñ
[¿¼ÑÐ] 267Ò»Ö¾Ô¸ÄϾ©¹¤Òµ´óѧ0817»¯¹¤Çóµ÷¼Á +6 SUICHILD 2026-03-12 6/300 2026-03-17 09:24 by ÎíÉ¢ºóÏàÓölc
[¿¼ÑÐ] 274Çóµ÷¼Á +5 ʱ¼äµã 2026-03-13 5/250 2026-03-17 07:34 by ÈÈÇéɳĮ
[¿¼ÑÐ] 0854¿ØÖƹ¤³Ì 359Çóµ÷¼Á ¿É¿çרҵ +3 626776879 2026-03-14 9/450 2026-03-16 17:42 by 626776879
[¿¼ÑÐ] »¯Ñ§µ÷¼Á0703 +8 °¡ÎÒÎÒµÄ 2026-03-11 8/400 2026-03-16 17:23 by ÎҵĴ¬Îҵĺ£
[»ù½ðÉêÇë] ½ñÄêµÄ¹ú»ù½ðÊÇ´ò·ÖÖÆÂ𣿠50+3 zhanghaozhu 2026-03-14 3/150 2026-03-16 17:07 by ±±¾©À³ÒðÈóÉ«
[¿¼ÑÐ] 304Çóµ÷¼Á +4 ahbd 2026-03-14 4/200 2026-03-16 16:48 by ÎҵĴ¬Îҵĺ£
[¿¼ÑÐ] 318Çóµ÷¼Á +3 Yanyali 2026-03-15 3/150 2026-03-16 16:41 by houyaoxu
[¿¼ÑÐ] 0703Ò»Ö¾Ô¸211 285·ÖÇóµ÷¼Á +5 ly3471z 2026-03-13 5/250 2026-03-16 16:16 by ŶŶ123
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤ Çóµ÷¼Á +13 enenenhui 2026-03-13 14/700 2026-03-16 15:19 by ÁËÁËÁËÁË¡£¡£
[¿¼ÑÐ] 0703 ÎïÀí»¯Ñ§µ÷¼Á +3 ÎÒ¿ÉÒÔÉϰ¶µÄ¶Ô 2026-03-13 5/250 2026-03-16 10:50 by ÎÒ¿ÉÒÔÉϰ¶µÄ¶ÔÂ
[¿¼ÑÐ] 080500£¬²ÄÁÏѧ˶302·ÖÇóµ÷¼ÁѧУ +4 ³õʶ¿ÉÀÖ 2026-03-14 5/250 2026-03-14 21:08 by peike
[¿¼ÑÐ] ¸´ÊÔµ÷¼Á +3 ºôºô£¿~+123456 2026-03-14 3/150 2026-03-14 16:53 by WTUChen
[¿¼ÑÐ] ²ÄÁϹ¤³Ìµ÷¼Á +9 ßäßä¿Õ¿Õ 2026-03-12 9/450 2026-03-13 22:05 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷ÄϽ»´ó£¬²ÄÁÏר˶317Çóµ÷¼Á +5 lx8568 2026-03-11 5/250 2026-03-13 21:43 by peike
[¿¼ÑÐ] ÍÁľµÚÒ»Ö¾Ô¸276Çóµ÷¼Á£¬¿ÆÑкͼ¼ÄÜÊ®·Ö·á¸»£¬ÇóÐÂÐË·½ÏòµÄµ¼Ê¦ÊÕÁô +3 ÍÁľСÌì²Å 2026-03-12 3/150 2026-03-13 15:01 by JourneyLucky
[¿¼ÑÐ] 270Çóµ÷¼Á 085600²ÄÁÏÓ뻯¹¤×¨Ë¶ +3 YXCT 2026-03-11 3/150 2026-03-13 10:13 by houyaoxu
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û