[求助]如何在matlab中读取大规模数据

[yiyu208]

本人有4万多条ASC码的三维坐标数据，请问怎么样在MATLAB中读取并且用三维图显示出来？急！望各位高手指点！
0 3.655485 140
1.5 3.655485 140
3 3.655485 141
4.5 3.655485 142
6 3.655485 144
7.5 3.655485 145
9.000001 3.655485 147
10.5 3.655485 149
12 3.655485 150
13.5 3.655485 152
15 3.655485 154
16.5 3.655485 155
18 3.655485 157
19.5 3.655485 158
21 3.655485 160
22.5 3.655485 162
24 3.655485 164
25.5 3.655485 165
27 3.655485 167
28.5 3.655485 168
30 3.655485 169
31.5 3.655485 171
33 3.655485 172
34.5 3.655485 173
36 3.655485 174
37.5 3.655485 176
39 3.655485 177
40.5 3.655485 178
42 3.655485 179
43.5 3.655485 181
45 3.655485 182
46.5 3.655485 183
48 3.655485 184
49.5 3.655485 185
51 3.655485 186
52.5 3.655485 187
54 3.655485 188
55.5 3.655485 190
57 3.655485 191
58.5 3.655485 193
60 3.655485 194
61.5 3.655485 195
63 3.655485 197
64.5 3.655485 197
66 3.655485 198
67.5 3.655485 199
69 3.655485 199
70.5 3.655485 200
72 3.655485 200
73.5 3.655485 201
75 3.655485 201
76.5 3.655485 201
78 3.655485 201
79.5 3.655485 201
81 3.655485 201
82.5 3.655485 201
84 3.655485 200
85.5 3.655485 200
87 3.655485 199
88.5 3.655485 198
90 3.655485 198
91.5 3.655485 197
92.99999 3.655485 196
94.5 3.655485 195
96 3.655485 194
97.5 3.655485 193
99 3.655485 192
100.5 3.655485 191
102 3.655485 191
103.5 3.655485 190
105 3.655485 189
106.5 3.655485 188
108 3.655485 187
109.5 3.655485 186
111 3.655485 185
112.5 3.655485 184
114 3.655485 183
115.5 3.655485 181
117 3.655485 180
118.5 3.655485 179
120 3.655485 177
121.5 3.655485 176
123 3.655485 175
124.5 3.655485 174
126 3.655485 172
127.5 3.655485 171
129 3.655485 169
130.5 3.655485 167
132 3.655485 166
133.5 3.655485 165
135 3.655485 163
136.5 3.655485 161
138 3.655485 160
139.5 3.655485 159
141 3.655485 157
142.5 3.655485 156
144 3.655485 155
145.5 3.655485 153
147 3.655485 153
148.5 3.655485 153
S endscan1。。。。
此为其中一段