1
銆?/p>
Size
鍑芥暟鐢ㄦ硶
渚嬪锛?/p>
1,2,3;4,5,6]
鏄竴涓?/p>
2*3
鐨勭煩闃碉紝鍒欙細
d = size(X);
%
杩斿洖鐭╅樀鐨勮鏁板拰鍒楁暟锛屼繚瀛樺湪
d
涓?/p>
[m,n] = size(X)%
杩斿洖鐭╅樀鐨勮鏁板拰鍒楁暟锛屽垎鍒繚瀛樺湪
m
鍜?/p>
n
涓?/p>
m = size(X,dim);%
杩斿洖鐭╅樀鐨勮鏁版垨鍒楁暟锛?/p>
dim=1
杩斿洖琛屾暟锛?/p>
dim=2
杩斿洖鍒楁暟
2
銆?/p>
Corrcoef
鍑芥暟鐢ㄦ硶
corrcoef
锛?/p>
x
锛?/p>
y
锛?/p>
琛ㄧず搴忓垪
x
鍜屽簭鍒?/p>
y
鐨勭浉鍏崇郴鏁帮紝
寰楀埌鐨勭粨鏋滄槸涓�涓?/p>
2*2
鐭╅樀锛?/p>
鍏朵腑瀵硅绾夸笂鐨勫厓绱犲垎鍒〃绀?/p>
x
鍜?/p>
y
鐨勮嚜鐩稿叧锛岄潪瀵硅绾夸笂鐨勫厓绱犲垎鍒〃绀?/p>
x
涓?/p>
y
鐨勭浉鍏崇郴鏁板拰
y
涓?/p>
x
鐨勭浉鍏崇郴鏁帮紝涓や釜鏄浉绛夌殑
3
銆?/p>
sort
鍑芥暟鐢ㄦ硶
sort(X)
鍔熻兘锛氳繑鍥炲鍚戦噺
X
涓殑鍏冪礌鎸夊垪鍗囧簭鎺掑垪鐨勬柊鍚戦噺銆?/p>
[Y, I] = sort(A, dim, mode)
鍔熻兘锛氬鐭╅樀
A
鐨勫悇鍒楁垨鍚勮閲嶆柊鎺掑簭锛?/p>
I
璁板綍
Y
涓殑鍏冪礌鍦ㄦ帓搴忓墠
A
涓綅缃紝
鍏朵腑
dim
鎸囨槑璇?/p>
A
鐨勫垪杩樻槸琛岃繘琛屾帓搴忋�?/p>
鑻?/p>
dim=1
锛?/p>
鍒欐寜鍒楁帓搴忥紱
鑻?/p>
dim=2
锛?/p>
鍒欐寜琛屾帓搴忋�?/p>
mode
涓烘帓搴忕殑鏂瑰紡锛?/p>
鍙栧�?/p>
'ascend'
涓哄崌搴忥紝
'descend'
涓洪檷搴?/p>
4
銆?/p>
Legend
鍑芥暟鐢ㄦ硶
legend(string1,string2,string3,
鈹?/p>
)
鍒嗗埆灏嗗瓧绗︿覆
1
銆佸瓧绗︿覆
2
銆佸瓧绗︿覆
3
鈥︹�︽爣娉ㄥ埌鍥句腑锛屾瘡涓瓧绗︿覆瀵瑰簲鐨勫浘鏍?/p>
涓虹敾鍥炬椂鐨勫浘鏍囥�?/p>
渚嬪锛?/p>
plot(x,sin(x),
鈥?/p>
.b
鈥?/p>
,x,cos(x),
鈥?/p>
+r
鈥?/p>
)
legend(
鈥?/p>
sin
鈥?/p>
,
鈥?/p>
cos
鈥?/p>
)
//
杩欐牱灏卞彲浠ユ妸鈥?/p>
.
鈥?/p>
鏍囪瘑涓衡�?/p>
sin
鈥?/p>
锛?/p>
鎶娾�?/p>
+
鈥?/p>
鏍囪瘑涓?/p>
鈥?/p>
cos
鈥?/p>
5
銆?/p>
find
鍑芥暟鐢ㄦ硶
鎵惧埌闈為浂鍏冪礌鐨勭储寮曞拰鍊?/p>
璇硶锛?/p>
1. ind = find(X)
2. ind = find(X, k)
3. ind = find(X, k, 'first')
4. ind = find(X, k, 'last')
5. [row,col] = find(X, ...)
6. [row,col,v] = find(X, ...)
璇存槑锛?/p>
1. ind = find(X)