1、grid、box函数：设置网格线、边框

2、用法说明

(1)grid on/off 函数对当前坐标图加上或撤销网格线

(2)box on/off 函数对当前坐标图加上或撤销边框

(3)grid 函数在设置网格线和撤销网格线两种状态间进行转换

(4)box 函数在加上边框和撤销边框两种状态进行装换

3、用法举例

>> x = 1:200;

>> y = x.^2

y =

Columns 1 through 8

1 4 9 16 25 36 49 64

Columns 9 through 16

81 100 121 144 169 196 225 256

Columns 17 through 24

289 324 361 400 441 484 529 576

Columns 25 through 32

625 676 729 784 841 900 961 1024

Columns 33 through 40

1089 1156 1225 1296 1369 1444 1521 1600

Columns 41 through 48

1681 1764 1849 1936 2025 2116 2209 2304

Columns 49 through 56

2401 2500 2601 2704 2809 2916 3025 3136

Columns 57 through 64

3249 3364 3481 3600 3721 3844 3969 4096

Columns 65 through 72

4225 4356 4489 4624 4761 4900 5041 5184

Columns 73 through 80

5329 5476 5625 5776 5929 6084 6241 6400

Columns 81 through 88

6561 6724 6889 7056 7225 7396 7569 7744

Columns 89 through 96

7921 8100 8281 8464 8649 8836 9025 9216

Columns 97 through 104

9409 9604 9801 10000 10201 10404 10609 10816

Columns 105 through 112

11025 11236 11449 11664 11881 12100 12321 12544

Columns 113 through 120

12769 12996 13225 13456 13689 13924 14161 14400

Columns 121 through 128

14641 14884 15129 15376 15625 15876 16129 16384

Columns 129 through 136

16641 16900 17161 17424 17689 17956 18225 18496

Columns 137 through 144

18769 19044 19321 19600 19881 20164 20449 20736

Columns 145 through 152

21025 21316 21609 21904 22201 22500 22801 23104

Columns 153 through 160

23409 23716 24025 24336 24649 24964 25281 25600

Columns 161 through 168

25921 26244 26569 26896 27225 27556 27889 28224

Columns 169 through 176

28561 28900 29241 29584 29929 30276 30625 30976

Columns 177 through 184

31329 31684 32041 32400 32761 33124 33489 33856

Columns 185 through 192

34225 34596 34969 35344 35721 36100 36481 36864

Columns 193 through 200

37249 37636 38025 38416 38809 39204 39601 40000

>> plot(x,y)

(1)grid on

>> grid on

(2)grid off

>> grid off

(3)box on

>> box on

(4)box off

>> box off