matlab同一矩阵任意两列相减绝对值的最大值和最小值
= [1,2,10,4,5;6,7,8,9,10;11,8,13,14,15;16,17,20,19,20];% 求出两两相减的列索引
ic = perms(1:5);
ic = ic(:,1:2);
ic = sort(ic,2);
ic = unique(ic,'rows');
w = length(ic);
[m,n] = size(b);
% 求出所有列两两相减的绝对值
absv = zeros(m,w);
for p = 1:w
p1 = b(:,ic(p,1));
p2 = b(:,ic(p,2));
absv(:,p) = abs(p1-p2);
end
% 求最大值
maxv = zeros(m,3);
maxv(:,1) = max(absv')';
% 求最小值
minv = zeros(m,3);
minv(:,1) = min(absv')';
% 找出所有得到大小值的列索引
for p = 1:m
id = find(maxv(p,1)==absv(p,:));
if length(id)>1, id = id(1); end;
maxv(p,2:3) = ic(id,:);
id = find(minv(p,1)==absv(p,:));
if length(id)>1, id = id(1); end;
minv(p,2:3) = ic(id,:);
end
maxv
minv
maxv =
9 1 3 4 1 5 7 2 5 4 1 3
minv =
1 1 2 1 1 2 1 3 4 0 3 5
绛旓細鍋囪琚搷浣鐭╅樀涓篻oal锛屽畠鏈塶鍒 n=size(goal,2);jack=nchoosek(n,2);result=zeros(size(goal,1),jack*2);hello=0;for i=1:n-1 for j=i+1:n hello=hello+1;result(:,1+2*(hello-1):2+2*(hello-1))=goal(:,[i,j]);end end result%浠庡乏鍒板彸锛屾瘡涓ゅ垪灏辨槸浣犺鐨 ...
绛旓細A=rand(100,100);(m,n)=size(A);B=zeros(m,n-1);for d=1:n-1 B(:,d)=A(:,d+1)-A(:,d);end B
绛旓細娉ㄦ剰锛屽鏋滃瓨鍦ㄤ袱缁勪互涓婄浉鍚屾鏁版渶澶氱殑琛岋紝绠楁硶鍙細鍙栧叾涓竴缁勩侫=[23 11 202 346 222 345 19 -1 203 346 222 345 20 -7 202 352 222 345 11 27 136 364 125 337 19 28 144 365 125 337 14 15 148 348 125 337 14 15 138 350 124 335 24 11 153 347 129 336 23 11 153 ...
绛旓細濡傛灉浣犵煡閬揵鍙湁鍑犺锛屽彲浠ヤ笉鐢ㄥ惊鐜 >> t1=find(a(1)==b(:,1))t1 = 1 4 >> t2=find(a(2)==b(:,2))t2 = 4 杩欐牱灏辩煡閬撶4琛屼笌a鐩哥瓑銆備絾瀵逛簬澶х殑鐭╅樀鎴栨湭鐭ュぇ灏忕殑鐭╅樀涓嶇敤寰幆濂藉儚涓嶅お濂藉仛銆
绛旓細鐢╢or寰幆鍙互瀹炵幇锛歛=magic(5);b=a(:,3);n=size(a);n=n(2);for i=1:n if a(:,i)==b i end end ---杈撳嚭鐨刬鍗虫槸鎵惧埌鐨勫垪搴忔暟銆
绛旓細鍏跺疄杩樻槸瑕佷娇鐢╮epmat鍑芥暟锛屽彧涓嶈繃闇瑕佸啀杈呬互涓鐐瑰叾瀹冩墜娈点傚弬鑰冧唬鐮侊紙浠呯敤浜庤鏄庨棶棰橈紝鎶100鏀逛负3锛200鏀逛负5锛夛細>> A=(1:3)'A = 1 2 3>> B=repmat(A',5,1);>> B(:)ans = 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 ...
绛旓細鍦matlab涓璁╃煩闃垫寜鏌愪竴鍒楁帓鍒楋紝闇瑕佺敤鍒版帓搴忕畻娉曞鏌愪竴鍒楁暟鎹帓搴忥紝鐒跺悗鍦ㄦ帓搴忕畻娉曠殑if鍒ゆ柇鍙ヤ腑锛屼緷娆′氦鎹鐭╅樀涓琛屽唴瀹广備互棰樼洰涓煩闃典负渚嬶紝鍙互鍒╃敤鍐掓场娉曞绗笁鍒楁暟鎹帓搴忥紝瀹炵幇绋嬪簭濡備笅锛歛=[5 7 8;4 6 1;8 0 7];n=length(a);b=[];for i=1:n-1 for j=1:n-i if(a(j,3)>a(...
绛旓細浣犲彲浠ュ皾璇曞皢鏁扮粍鍙樻垚瀛楃涓茬劧鍚庤繘琛屾搷浣滐紝鍙傝冧唬鐮佸涓嬶細clearclcA = [1 2 3;4 5 6;7 8 9];n = size(A,1);s = (num2str(A))';s(isspace(s)) = []; %鍘婚櫎鎵鏈夌┖鏍約 = s(:);for fi = 1:n str(fi,1) = textscan(s,'%3c',1); %寰幆鎻愬彇s涓殑鍓3涓瓧绗︿覆 s...
绛旓細A=A(:)';B=unique(A);for x=1:length(B)if length(find(A==B(x)))>1 C(x)=B(x);else C(x)=0;end end C(find(C==0))=[]渚嬪锛欰 = 2 3 4 5 3 4 5 6 4 5 6 7 5 6 7 8 6 7 8 9 >> A=A(:)';B=unique(...
绛旓細鐭╅樀鍜屽悜閲忓厓绱犵浉闄ょ敤b./a锛'./'鐐归櫎绗﹀彿锛涗綘杩欎釜b/a鍓嶆彁閮介敊浜嗭紝b=k*a锛岃鏄巃鍜宐鏄嚎鎬х浉鍏崇殑锛岃繖涓墠鎻愪笅鎵嶈兘闄わ紝涓嶇浉鍏崇殑璇濆氨涓嶈兘绾挎ц〃绀轰簡銆備綘鐜板湪姹傚嚭鐨勭粨鏋滅浉褰撲簬鐭╅樀姹傞嗭紝姣斿a/b锛屾槸a鍜宐鐨勯嗙浉涔樼殑缁撴灉锛屽洜涓篵涓嶆槸鏂归樀锛岃繖涓椂鍊欐眰鐨勬槸浼嗭紝鎵浠/b鍜宎*pinv(b)鏄涓涓缁撴灉銆
