I am using a sample system containing of two polymerchains of 100 monomers each along with two trimers. I want to fix the bond angle to 180 degrees. I am taking an input from the readdata file. Its showing an
ERROR: Invalid data file section: Angles (…/read_data.cpp:231).
My data file is the following:
LAMMPS description
206 atoms
202 bonds
2 atom types
2 bond types
2 angle types
0 dihedral types
-10.000000 10.000000 xlo xhi
-10.000000 10.000000 ylo yhi
-10.000000 10.000000 zlo zhi
Masses
1 1.0
2 64.0
Atoms
1 1 1 -9.500000 -9.500000 -9.500000
2 1 1 -8.400000 -9.500000 -9.500000
3 1 1 -7.300000 -9.500000 -9.500000
4 1 1 -6.200000 -9.500000 -9.500000
5 1 1 -5.100000 -9.500000 -9.500000
6 1 1 -4.000000 -9.500000 -9.500000
7 1 1 -2.900000 -9.500000 -9.500000
8 1 1 -1.800000 -9.500000 -9.500000
9 1 1 -0.700000 -9.500000 -9.500000
10 1 1 0.400000 -9.500000 -9.500000
11 1 1 1.500000 -9.500000 -9.500000
12 1 1 2.600000 -9.500000 -9.500000
13 1 1 3.700000 -9.500000 -9.500000
14 1 1 4.800000 -9.500000 -9.500000
15 1 1 5.900000 -9.500000 -9.500000
16 1 1 7.000000 -9.500000 -9.500000
17 1 1 8.100000 -9.500000 -9.500000
18 1 1 9.200000 -9.500000 -9.500000
19 1 1 9.200000 -8.400000 -9.500000
20 1 1 8.100000 -8.400000 -9.500000
21 1 1 7.000000 -8.400000 -9.500000
22 1 1 5.900000 -8.400000 -9.500000
23 1 1 4.800000 -8.400000 -9.500000
24 1 1 3.700000 -8.400000 -9.500000
25 1 1 2.600000 -8.400000 -9.500000
26 1 1 1.500000 -8.400000 -9.500000
27 1 1 0.400000 -8.400000 -9.500000
28 1 1 -0.700000 -8.400000 -9.500000
29 1 1 -1.800000 -8.400000 -9.500000
30 1 1 -2.900000 -8.400000 -9.500000
31 1 1 -4.000000 -8.400000 -9.500000
32 1 1 -5.100000 -8.400000 -9.500000
33 1 1 -6.200000 -8.400000 -9.500000
34 1 1 -7.300000 -8.400000 -9.500000
35 1 1 -8.400000 -8.400000 -9.500000
36 1 1 -9.500000 -8.400000 -9.500000
37 1 1 -9.500000 -7.300000 -9.500000
38 1 1 -8.400000 -7.300000 -9.500000
39 1 1 -7.300000 -7.300000 -9.500000
40 1 1 -6.200000 -7.300000 -9.500000
41 1 1 -5.100000 -7.300000 -9.500000
42 1 1 -4.000000 -7.300000 -9.500000
43 1 1 -2.900000 -7.300000 -9.500000
44 1 1 -1.800000 -7.300000 -9.500000
45 1 1 -0.700000 -7.300000 -9.500000
46 1 1 0.400000 -7.300000 -9.500000
47 1 1 1.500000 -7.300000 -9.500000
48 1 1 2.600000 -7.300000 -9.500000
49 1 1 3.700000 -7.300000 -9.500000
50 1 1 4.800000 -7.300000 -9.500000
51 1 1 5.900000 -7.300000 -9.500000
52 1 1 7.000000 -7.300000 -9.500000
53 1 1 8.100000 -7.300000 -9.500000
54 1 1 9.200000 -7.300000 -9.500000
55 1 1 9.200000 -6.200000 -9.500000
56 1 1 8.100000 -6.200000 -9.500000
57 1 1 7.000000 -6.200000 -9.500000
58 1 1 5.900000 -6.200000 -9.500000
59 1 1 4.800000 -6.200000 -9.500000
60 1 1 3.700000 -6.200000 -9.500000
61 1 1 2.600000 -6.200000 -9.500000
62 1 1 1.500000 -6.200000 -9.500000
63 1 1 0.400000 -6.200000 -9.500000
64 1 1 -0.700000 -6.200000 -9.500000
65 1 1 -1.800000 -6.200000 -9.500000
66 1 1 -2.900000 -6.200000 -9.500000
67 1 1 -4.000000 -6.200000 -9.500000
68 1 1 -5.100000 -6.200000 -9.500000
69 1 1 -6.200000 -6.200000 -9.500000
70 1 1 -7.300000 -6.200000 -9.500000
71 1 1 -8.400000 -6.200000 -9.500000
72 1 1 -9.500000 -6.200000 -9.500000
73 1 1 -9.500000 -5.100000 -9.500000
74 1 1 -8.400000 -5.100000 -9.500000
75 1 1 -7.300000 -5.100000 -9.500000
76 1 1 -6.200000 -5.100000 -9.500000
77 1 1 -5.100000 -5.100000 -9.500000
78 1 1 -4.000000 -5.100000 -9.500000
79 1 1 -2.900000 -5.100000 -9.500000
80 1 1 -1.800000 -5.100000 -9.500000
81 1 1 -0.700000 -5.100000 -9.500000
82 1 1 0.400000 -5.100000 -9.500000
83 1 1 1.500000 -5.100000 -9.500000
84 1 1 2.600000 -5.100000 -9.500000
85 1 1 3.700000 -5.100000 -9.500000
86 1 1 4.800000 -5.100000 -9.500000
87 1 1 5.900000 -5.100000 -9.500000
88 1 1 7.000000 -5.100000 -9.500000
89 1 1 8.100000 -5.100000 -9.500000
90 1 1 9.200000 -5.100000 -9.500000
91 1 1 9.200000 -4.000000 -9.500000
92 1 1 8.100000 -4.000000 -9.500000
93 1 1 7.000000 -4.000000 -9.500000
94 1 1 5.900000 -4.000000 -9.500000
95 1 1 4.800000 -4.000000 -9.500000
96 1 1 3.700000 -4.000000 -9.500000
97 1 1 2.600000 -4.000000 -9.500000
98 1 1 1.500000 -4.000000 -9.500000
99 1 1 0.400000 -4.000000 -9.500000
100 1 1 -0.700000 -4.000000 -9.500000
101 1 1 -1.800000 -4.000000 -9.500000
102 1 1 -2.900000 -4.000000 -9.500000
103 1 1 -4.000000 -4.000000 -9.500000
104 1 1 -5.100000 -4.000000 -9.500000
105 1 1 -6.200000 -4.000000 -9.500000
106 1 1 -7.300000 -4.000000 -9.500000
107 1 1 -8.400000 -4.000000 -9.500000
108 1 1 -9.500000 -4.000000 -9.500000
109 2 1 -9.500000 -2.900000 -9.500000
110 2 1 -8.400000 -2.900000 -9.500000
111 2 1 -7.300000 -2.900000 -9.500000
112 2 1 -6.200000 -2.900000 -9.500000
113 2 1 -5.100000 -2.900000 -9.500000
114 2 1 -4.000000 -2.900000 -9.500000
115 2 1 -2.900000 -2.900000 -9.500000
116 2 1 -1.800000 -2.900000 -9.500000
117 2 1 -0.700000 -2.900000 -9.500000
118 2 1 0.400000 -2.900000 -9.500000
119 2 1 1.500000 -2.900000 -9.500000
120 2 1 2.600000 -2.900000 -9.500000
121 2 1 3.700000 -2.900000 -9.500000
122 2 1 4.800000 -2.900000 -9.500000
123 2 1 5.900000 -2.900000 -9.500000
124 2 1 7.000000 -2.900000 -9.500000
125 2 1 8.100000 -2.900000 -9.500000
126 2 1 9.200000 -2.900000 -9.500000
127 2 1 9.200000 -1.800000 -9.500000
128 2 1 8.100000 -1.800000 -9.500000
129 2 1 7.000000 -1.800000 -9.500000
130 2 1 5.900000 -1.800000 -9.500000
131 2 1 4.800000 -1.800000 -9.500000
132 2 1 3.700000 -1.800000 -9.500000
133 2 1 2.600000 -1.800000 -9.500000
134 2 1 1.500000 -1.800000 -9.500000
135 2 1 0.400000 -1.800000 -9.500000
136 2 1 -0.700000 -1.800000 -9.500000
137 2 1 -1.800000 -1.800000 -9.500000
138 2 1 -2.900000 -1.800000 -9.500000
139 2 1 -4.000000 -1.800000 -9.500000
140 2 1 -5.100000 -1.800000 -9.500000
141 2 1 -6.200000 -1.800000 -9.500000
142 2 1 -7.300000 -1.800000 -9.500000
143 2 1 -8.400000 -1.800000 -9.500000
144 2 1 -9.500000 -1.800000 -9.500000
145 2 1 -9.500000 -0.700000 -9.500000
146 2 1 -8.400000 -0.700000 -9.500000
147 2 1 -7.300000 -0.700000 -9.500000
148 2 1 -6.200000 -0.700000 -9.500000
149 2 1 -5.100000 -0.700000 -9.500000
150 2 1 -4.000000 -0.700000 -9.500000
151 2 1 -2.900000 -0.700000 -9.500000
152 2 1 -1.800000 -0.700000 -9.500000
153 2 1 -0.700000 -0.700000 -9.500000
154 2 1 0.400000 -0.700000 -9.500000
155 2 1 1.500000 -0.700000 -9.500000
156 2 1 2.600000 -0.700000 -9.500000
157 2 1 3.700000 -0.700000 -9.500000
158 2 1 4.800000 -0.700000 -9.500000
159 2 1 5.900000 -0.700000 -9.500000
160 2 1 7.000000 -0.700000 -9.500000
161 2 1 8.100000 -0.700000 -9.500000
162 2 1 9.200000 -0.700000 -9.500000
163 2 1 9.200000 0.400000 -9.500000
164 2 1 8.100000 0.400000 -9.500000
165 2 1 7.000000 0.400000 -9.500000
166 2 1 5.900000 0.400000 -9.500000
167 2 1 4.800000 0.400000 -9.500000
168 2 1 3.700000 0.400000 -9.500000
169 2 1 2.600000 0.400000 -9.500000
170 2 1 1.500000 0.400000 -9.500000
171 2 1 0.400000 0.400000 -9.500000
172 2 1 -0.700000 0.400000 -9.500000
173 2 1 -1.800000 0.400000 -9.500000
174 2 1 -2.900000 0.400000 -9.500000
175 2 1 -4.000000 0.400000 -9.500000
176 2 1 -5.100000 0.400000 -9.500000
177 2 1 -6.200000 0.400000 -9.500000
178 2 1 -7.300000 0.400000 -9.500000
179 2 1 -8.400000 0.400000 -9.500000
180 2 1 -9.500000 0.400000 -9.500000
181 2 1 -9.500000 1.500000 -9.500000
182 2 1 -8.400000 1.500000 -9.500000
183 2 1 -7.300000 1.500000 -9.500000
184 2 1 -6.200000 1.500000 -9.500000
185 2 1 -5.100000 1.500000 -9.500000
186 2 1 -4.000000 1.500000 -9.500000
187 2 1 -2.900000 1.500000 -9.500000
188 2 1 -1.800000 1.500000 -9.500000
189 2 1 -0.700000 1.500000 -9.500000
190 2 1 0.400000 1.500000 -9.500000
191 2 1 1.500000 1.500000 -9.500000
192 2 1 2.600000 1.500000 -9.500000
193 2 1 3.700000 1.500000 -9.500000
194 2 1 4.800000 1.500000 -9.500000
195 2 1 5.900000 1.500000 -9.500000
196 2 1 7.000000 1.500000 -9.500000
197 2 1 8.100000 1.500000 -9.500000
198 2 1 9.200000 1.500000 -9.500000
199 2 1 9.200000 2.600000 -9.500000
200 2 1 8.100000 2.600000 -9.500000
201 3 2 4.000000 6.700000 -6.000000
202 3 2 -0.100000 6.700000 -6.000000
203 3 2 -4.200000 6.700000 -6.000000
204 4 2 6.000000 6.700000 -1.900000
205 4 2 1.900000 6.700000 -1.900000
206 4 2 -2.200000 6.700000 -1.900000
Bonds
1 1 1 2
2 1 2 3
3 1 3 4
4 1 4 5
5 1 5 6
6 1 6 7
7 1 7 8
8 1 8 9
9 1 9 10
10 1 10 11
11 1 11 12
12 1 12 13
13 1 13 14
14 1 14 15
15 1 15 16
16 1 16 17
17 1 17 18
18 1 18 19
19 1 19 20
20 1 20 21
21 1 21 22
22 1 22 23
23 1 23 24
24 1 24 25
25 1 25 26
26 1 26 27
27 1 27 28
28 1 28 29
29 1 29 30
30 1 30 31
31 1 31 32
32 1 32 33
33 1 33 34
34 1 34 35
35 1 35 36
36 1 36 37
37 1 37 38
38 1 38 39
39 1 39 40
40 1 40 41
41 1 41 42
42 1 42 43
43 1 43 44
44 1 44 45
45 1 45 46
46 1 46 47
47 1 47 48
48 1 48 49
49 1 49 50
50 1 50 51
51 1 51 52
52 1 52 53
53 1 53 54
54 1 54 55
55 1 55 56
56 1 56 57
57 1 57 58
58 1 58 59
59 1 59 60
60 1 60 61
61 1 61 62
62 1 62 63
63 1 63 64
64 1 64 65
65 1 65 66
66 1 66 67
67 1 67 68
68 1 68 69
69 1 69 70
70 1 70 71
71 1 71 72
72 1 72 73
73 1 73 74
74 1 74 75
75 1 75 76
76 1 76 77
77 1 77 78
78 1 78 79
79 1 79 80
80 1 80 81
81 1 81 82
82 1 82 83
83 1 83 84
84 1 84 85
85 1 85 86
86 1 86 87
87 1 87 88
88 1 88 89
89 1 89 90
90 1 90 91
91 1 91 92
92 1 92 93
93 1 93 94
94 1 94 95
95 1 95 96
96 1 96 97
97 1 97 98
98 1 98 99
99 1 99 100
100 1 101 102
101 1 102 103
102 1 103 104
103 1 104 105
104 1 105 106
105 1 106 107
106 1 107 108
107 1 108 109
108 1 109 110
109 1 110 111
110 1 111 112
111 1 112 113
112 1 113 114
113 1 114 115
114 1 115 116
115 1 116 117
116 1 117 118
117 1 118 119
118 1 119 120
119 1 120 121
120 1 121 122
121 1 122 123
122 1 123 124
123 1 124 125
124 1 125 126
125 1 126 127
126 1 127 128
127 1 128 129
128 1 129 130
129 1 130 131
130 1 131 132
131 1 132 133
132 1 133 134
133 1 134 135
134 1 135 136
135 1 136 137
136 1 137 138
137 1 138 139
138 1 139 140
139 1 140 141
140 1 141 142
141 1 142 143
142 1 143 144
143 1 144 145
144 1 145 146
145 1 146 147
146 1 147 148
147 1 148 149
148 1 149 150
149 1 150 151
150 1 151 152
151 1 152 153
152 1 153 154
153 1 154 155
154 1 155 156
155 1 156 157
156 1 157 158
157 1 158 159
158 1 159 160
159 1 160 161
160 1 161 162
161 1 162 163
162 1 163 164
163 1 164 165
164 1 165 166
165 1 166 167
166 1 167 168
167 1 168 169
168 1 169 170
169 1 170 171
170 1 171 172
171 1 172 173
172 1 173 174
173 1 174 175
174 1 175 176
175 1 176 177
176 1 177 178
177 1 178 179
178 1 179 180
179 1 180 181
180 1 181 182
181 1 182 183
182 1 183 184
183 1 184 185
184 1 185 186
185 1 186 187
186 1 187 188
187 1 188 189
188 1 189 190
189 1 190 191
190 1 191 192
191 1 192 193
192 1 193 194
193 1 194 195
194 1 195 196
195 1 196 197
196 1 197 198
197 1 198 199
198 1 199 200
199 2 201 202
200 2 202 203
201 2 204 205
202 2 205 206
Angles
1 1 1 2 3
2 1 2 3 4
3 1 3 4 5
4 1 4 5 6
5 1 5 6 7
6 1 6 7 8
7 1 7 8 9
8 1 8 9 10
9 1 9 10 11
10 1 10 11 12
11 1 11 12 13
12 1 12 13 14
13 1 13 14 15
14 1 14 15 16
15 1 15 16 17
16 1 16 17 18
17 1 17 18 19
18 1 18 19 20
19 1 19 20 21
20 1 20 21 22
21 1 21 22 23
22 1 22 23 24
23 1 23 24 25
24 1 24 25 26
25 1 25 26 27
26 1 26 27 28
27 1 27 28 29
28 1 28 29 30
29 1 29 30 31
30 1 30 31 32
31 1 31 32 33
32 1 32 33 34
33 1 33 34 35
34 1 34 35 36
35 1 35 36 37
36 1 36 37 38
37 1 37 38 39
38 1 38 39 40
39 1 39 40 41
40 1 40 41 42
41 1 41 42 43
42 1 42 43 44
43 1 43 44 45
44 1 44 45 46
45 1 45 46 47
46 1 46 47 48
47 1 47 48 49
48 1 48 49 50
49 1 49 50 51
50 1 50 51 52
51 1 51 52 53
52 1 52 53 54
53 1 53 54 55
54 1 54 55 56
55 1 55 56 57
56 1 56 57 58
57 1 57 58 59
58 1 58 59 60
59 1 59 60 61
60 1 60 61 62
61 1 61 62 63
62 1 62 63 64
63 1 63 64 65
64 1 64 65 66
65 1 65 66 67
66 1 66 67 68
67 1 67 68 69
68 1 68 69 70
69 1 69 70 71
70 1 70 71 72
71 1 71 72 73
72 1 72 73 74
73 1 73 74 75
74 1 74 75 76
75 1 75 76 77
76 1 76 77 78
77 1 77 78 79
78 1 78 79 80
79 1 79 80 81
80 1 80 81 82
81 1 81 82 83
82 1 82 83 84
83 1 83 84 85
84 1 84 85 86
85 1 85 86 87
86 1 86 87 88
87 1 87 88 89
88 1 88 89 90
89 1 89 90 91
90 1 90 91 92
91 1 91 92 93
92 1 92 93 94
93 1 93 94 95
94 1 94 95 96
95 1 95 96 97
96 1 96 97 98
97 1 97 98 99
98 1 98 99 100
101 1 101 102 103
102 1 102 103 104
103 1 103 104 105
104 1 104 105 106
105 1 105 106 107
106 1 106 107 108
107 1 107 108 109
108 1 108 109 110
109 1 109 110 111
110 1 110 111 112
111 1 111 112 113
112 1 112 113 114
113 1 113 114 115
114 1 114 115 116
115 1 115 116 117
116 1 116 117 118
117 1 117 118 119
118 1 118 119 120
119 1 119 120 121
120 1 120 121 122
121 1 121 122 123
122 1 122 123 124
123 1 123 124 125
124 1 124 125 126
125 1 125 126 127
126 1 126 127 128
127 1 127 128 129
128 1 128 129 130
129 1 129 130 131
130 1 130 131 132
131 1 131 132 133
132 1 132 133 134
133 1 133 134 135
134 1 134 135 136
135 1 135 136 137
136 1 136 137 138
137 1 137 138 139
138 1 138 139 140
139 1 139 140 141
140 1 140 141 142
141 1 141 142 143
142 1 142 143 144
143 1 143 144 145
144 1 144 145 146
145 1 145 146 147
146 1 146 147 148
147 1 147 148 149
148 1 148 149 150
149 1 149 150 151
150 1 150 151 152
151 1 151 152 153
152 1 152 153 154
153 1 153 154 155
154 1 154 155 156
155 1 155 156 157
156 1 156 157 158
157 1 157 158 159
158 1 158 159 160
159 1 159 160 161
160 1 160 161 162
161 1 161 162 163
162 1 162 163 164
163 1 163 164 165
164 1 164 165 166
165 1 165 166 167
166 1 166 167 168
167 1 167 168 169
168 1 168 169 170
169 1 169 170 171
170 1 170 171 172
171 1 171 172 173
172 1 172 173 174
173 1 173 174 175
174 1 174 175 176
175 1 175 176 177
176 1 176 177 178
177 1 177 178 179
178 1 178 179 180
179 1 179 180 181
180 1 180 181 182
181 1 181 182 183
182 1 182 183 184
183 1 183 184 185
184 1 184 185 186
185 1 185 186 187
186 1 186 187 188
187 1 187 188 189
188 1 188 189 190
189 1 189 190 191
190 1 190 191 192
191 1 191 192 193
192 1 192 193 194
193 1 193 194 195
194 1 194 195 196
195 1 195 196 197
196 1 196 197 198
197 1 197 198 199
198 1 198 199 200
199 2 201 202 203
200 2 204 205 206
please help.