MATLAB: Calculate the frequency response of acceleration data

hi to all,

I have a vector in Matlab which contains samples acquired at 10Hz from an accelerometer mounted on a frame's vehicle. This vector contains the acceleration values along the Z-axis. The acquisition time is 103 seconds.

I would like to plot the frequency values in Hz since I'm trying to study the terrain frequency response.

I tried to use the fft function available in Matlab, but I do not know how to proceed. Can you help me, please?

These are the values contained in my vector:

size(vibration)
ans =
        1024           1
vibration =
   -0.0005
   -0.0006
   -0.0007
   -0.0008
   -0.0010
   -0.0011
   -0.0012
   -0.0013
   -0.0014
   -0.0015
   -0.0016
   -0.0017
   -0.0018
   -0.0019
   -0.0020
   -0.0021
   -0.0022
   -0.0023
   -0.0024
   -0.0026
   -0.0027
   -0.0025
   -0.0003
   -0.0038
   -0.0089
   -0.0035
   -0.0018
   -0.0022
    0.0004
    0.0034
    0.0063
   -0.0023
   -0.0046
   -0.0022
   -0.0043
    0.0041
    0.0025
    0.0024
    0.0037
    0.0050
    0.0060
    0.0012
    0.0058
    0.0019
    0.0008
    0.0009
   -0.0060
    0.0004
    0.0032
   -0.0005
   -0.0008
   -0.0024
    0.0021
    0.0009
   -0.0019
    0.0003
    0.0012
    0.0069
    0.0125
    0.0209
    0.0262
    0.0184
    0.0100
    0.0058
    0.0136
    0.0181
    0.0089
    0.0058
    0.0077
    0.0045
    0.0024
    0.0015
    0.0044
    0.0095
    0.0096
    0.0087
    0.0019
    0.0053
    0.0066
    0.0033
   -0.0010
    0.0010
    0.0116
    0.0059
    0.0109
    0.0151
    0.0130
    0.0152
    0.0095
    0.0127
    0.0178
    0.0180
    0.0220
    0.0234
    0.0253
    0.0288
    0.0288
    0.0263
    0.0214
    0.0119
    0.0093
    0.0074
    0.0091
    0.0182
    0.0180
    0.0144
    0.0151
    0.0192
    0.0213
    0.0212
    0.0223
    0.0183
    0.0144
    0.0203
    0.0172
    0.0158
    0.0227
    0.0189
    0.0189
    0.0219
    0.0218
    0.0262
    0.0250
    0.0178
    0.0189
    0.0147
    0.0100
    0.0128
    0.0192
    0.0197
    0.0128
    0.0148
    0.0152
    0.0144
    0.0111
    0.0067
    0.0081
    0.0040
    0.0021
    0.0086
    0.0095
    0.0098
    0.0111
    0.0102
    0.0165
    0.0163
    0.0142
    0.0146
    0.0121
    0.0107
    0.0090
    0.0095
    0.0126
    0.0155
    0.0151
    0.0114
    0.0100
    0.0045
    0.0046
    0.0052
   -0.0068
   -0.0033
   -0.0055
   -0.0136
   -0.0035
   -0.0038
   -0.0029
    0.0013
    0.0043
    0.0117
    0.0176
    0.0278
    0.0228
    0.0096
    0.0099
    0.0153
    0.0119
    0.0048
    0.0104
    0.0126
    0.0064
    0.0092
    0.0088
    0.0104
    0.0113
    0.0105
    0.0249
    0.0307
    0.0266
    0.0258
    0.0254
    0.0254
    0.0258
    0.0239
    0.0224
    0.0226
    0.0229
    0.0220
    0.0197
    0.0201
    0.0169
    0.0246
    0.0264
    0.0273
    0.0366
    0.0282
    0.0300
    0.0323
    0.0320
    0.0259
    0.0097
    0.0103
   -0.0052
   -0.0069
    0.0156
    0.0098
    0.0025
    0.0081
    0.0118
    0.0085
    0.0094
    0.0117
    0.0091
    0.0139
    0.0135
    0.0153
    0.0103
   -0.0005
   -0.0056
   -0.0039
    0.0044
    0.0014
    0.0021
    0.0019
   -0.0011
   -0.0018
    0.0034
    0.0083
    0.0046
    0.0173
    0.0218
    0.0203
    0.0210
    0.0144
    0.0095
    0.0044
    0.0048
    0.0014
   -0.0001
    0.0034
    0.0065
    0.0110
    0.0081
    0.0147
    0.0218
    0.0131
    0.0167
    0.0201
    0.0207
    0.0193
    0.0188
    0.0171
    0.0170
    0.0203
    0.0079
    0.0045
    0.0063
    0.0012
    0.0011
    0.0058
    0.0094
    0.0072
    0.0143
    0.0257
    0.0265
    0.0185
    0.0149
    0.0157
    0.0158
    0.0171
    0.0093
    0.0055
    0.0091
    0.0054
    0.0061
    0.0141
    0.0177
    0.0173
    0.0172
    0.0205
    0.0189
    0.0193
    0.0289
    0.0252
    0.0202
    0.0137
    0.0122
    0.0184
    0.0085
    0.0098
    0.0220
    0.0178
    0.0205
    0.0207
    0.0192
    0.0264
    0.0236
    0.0172
    0.0221
    0.0215
    0.0175
    0.0173
    0.0129
    0.0153
    0.0024
   -0.0026
    0.0164
    0.0173
    0.0113
    0.0095
    0.0081
    0.0149
    0.0192
    0.0118
    0.0157
    0.0196
    0.0159
    0.0136
    0.0131
    0.0137
    0.0111
    0.0108
    0.0079
    0.0020
    0.0017
    0.0067
    0.0092
    0.0067
    0.0054
    0.0130
    0.0126
    0.0064
    0.0127
    0.0097
    0.0059
    0.0081
    0.0047
    0.0089
    0.0153
    0.0047
    0.0054
    0.0121
    0.0008
    0.0005
    0.0047
    0.0051
    0.0014
    0.0026
    0.0098
    0.0038
    0.0065
    0.0128
    0.0075
    0.0034
    0.0052
    0.0041
    0.0040
    0.0053
    0.0064
    0.0067
    0.0049
    0.0057
    0.0013
    0.0045
    0.0037
    0.0038
    0.0058
    0.0010
    0.0080
    0.0058
    0.0007
    0.0040
    0.0029
    0.0024
    0.0027
    0.0019
    0.0038
    0.0033
    0.0036
    0.0020
    0.0030
    0.0036
   -0.0048
    0.0057
    0.0095
    0.0013
    0.0047
    0.0087
    0.0048
    0.0004
    0.0053
    0.0039
    0.0027
    0.0011
    0.0040
    0.0054
    0.0060
    0.0093
    0.0071
    0.0064
    0.0033
    0.0134
    0.0111
    0.0066
    0.0141
    0.0076
    0.0062
    0.0043
    0.0098
    0.0087
    0.0038
    0.0145
    0.0082
    0.0053
    0.0106
    0.0084
    0.0088
    0.0074
    0.0121
    0.0101
    0.0079
    0.0142
    0.0111
    0.0126
    0.0126
    0.0115
    0.0068
    0.0088
    0.0098
    0.0065
    0.0096
    0.0068
    0.0088
    0.0065
    0.0086
    0.0044
    0.0038
    0.0087
    0.0021
    0.0056
    0.0088
    0.0105
    0.0016
    0.0039
    0.0111
    0.0025
    0.0090
    0.0101
    0.0102
    0.0091
    0.0067
    0.0102
    0.0023
    0.0073
    0.0106
    0.0017
    0.0022
    0.0082
    0.0072
    0.0027
    0.0022
    0.0006
    0.0064
    0.0062
    0.0050
    0.0088
    0.0085
    0.0087
    0.0003
    0.0064
    0.0046
   -0.0037
    0.0003
   -0.0012
   -0.0029
   -0.0063
    0.0063
    0.0071
   -0.0045
    0.0051
    0.0086
    0.0078
    0.0118
    0.0137
    0.0093
    0.0064
    0.0094
    0.0054
    0.0047
    0.0058
    0.0058
    0.0062
    0.0075
    0.0082
    0.0057
    0.0068
    0.0046
    0.0070
    0.0080
    0.0041
    0.0062
    0.0108
    0.0100
    0.0009
    0.0067
    0.0135
    0.0061
    0.0082
    0.0120
    0.0148
    0.0104
    0.0125
    0.0220
    0.0127
    0.0146
    0.0190
    0.0095
    0.0083
    0.0084
    0.0131
    0.0132
    0.0002
   -0.0040
    0.0012
    0.0045
    0.0051
    0.0055
    0.0046
    0.0081
    0.0086
    0.0079
    0.0052
    0.0028
    0.0034
   -0.0008
    0.0059
    0.0064
    0.0060
    0.0082
    0.0058
    0.0122
    0.0072
    0.0046
    0.0115
    0.0118
    0.0114
    0.0031
    0.0011
   -0.0032
   -0.0014
    0.0033
   -0.0022
    0.0088
    0.0039
    0.0071
    0.0128
    0.0110
    0.0196
    0.0114
    0.0123
    0.0129
    0.0092
    0.0138
    0.0170
    0.0156
    0.0146
    0.0208
    0.0215
    0.0171
    0.0126
    0.0147
    0.0133
    0.0117
    0.0158
    0.0104
    0.0145
    0.0085
    0.0039
    0.0119
    0.0073
    0.0041
    0.0057
    0.0145
    0.0084
    0.0030
    0.0125
    0.0096
    0.0155
    0.0187
    0.0200
    0.0217
    0.0145
    0.0115
   -0.0015
    0.0018
    0.0021
    0.0001
    0.0045
    0.0006
    0.0078
    0.0110
    0.0117
    0.0092
    0.0061
    0.0057
   -0.0001
   -0.0064
   -0.0070
   -0.0007
   -0.0005
    0.0008
    0.0067
    0.0059
    0.0047
    0.0020
    0.0101
    0.0121
    0.0059
    0.0056
    0.0033
    0.0066
    0.0065
    0.0019
    0.0005
    0.0009
    0.0052
    0.0013
    0.0045
    0.0151
    0.0108
    0.0069
    0.0030
    0.0069
    0.0187
    0.0201
    0.0222
    0.0242
    0.0204
    0.0176
    0.0147
    0.0175
    0.0147
    0.0150
    0.0218
    0.0237
    0.0262
    0.0246
    0.0278
    0.0273
    0.0204
    0.0219
    0.0233
    0.0134
    0.0112
    0.0210
    0.0184
    0.0173
    0.0201
    0.0220
    0.0226
    0.0170
    0.0195
    0.0241
    0.0181
    0.0173
    0.0201
    0.0163
    0.0233
    0.0109
   -0.0011
    0.0139
    0.0114
    0.0131
    0.0152
    0.0099
    0.0145
    0.0111
    0.0166
    0.0111
    0.0042
    0.0161
    0.0044
    0.0013
    0.0024
   -0.0080
   -0.0007
   -0.0046
   -0.0063
    0.0038
   -0.0002
   -0.0014
    0.0060
    0.0090
    0.0099
    0.0113
    0.0059
    0.0093
    0.0050
    0.0023
    0.0084
    0.0051
    0.0116
    0.0110
    0.0049
    0.0089
    0.0079
    0.0087
    0.0056
    0.0013
    0.0107
    0.0049
   -0.0032
    0.0029
    0.0027
   -0.0001
   -0.0005
   -0.0012
   -0.0007
   -0.0041
    0.0029
    0.0106
    0.0028
    0.0063
    0.0067
    0.0056
    0.0080
    0.0005
    0.0041
    0.0071
    0.0016
    0.0047
    0.0013
   -0.0083
   -0.0093
   -0.0066
   -0.0048
   -0.0084
   -0.0041
    0.0048
   -0.0013
   -0.0009
    0.0054
    0.0024
    0.0044
    0.0070
    0.0092
    0.0126
    0.0105
    0.0066
   -0.0084
   -0.0062
    0.0009
   -0.0096
    0.0054
    0.0046
   -0.0007
    0.0056
    0.0027
    0.0205
    0.0265
    0.0252
    0.0249
    0.0287
    0.0363
    0.0351
    0.0355
    0.0185
    0.0079
    0.0167
    0.0228
    0.0211
    0.0137
    0.0222
    0.0297
    0.0377
    0.0416
    0.0472
    0.0668
    0.0572
    0.0566
    0.0728
    0.0675
    0.0658
    0.0705
    0.0674
    0.0652
    0.0653
    0.0617
    0.0637
    0.0714
    0.0830
    0.0796
    0.0766
    0.0861
    0.0721
    0.0707
    0.0762
    0.0722
    0.0715
    0.0530
    0.0486
    0.0456
    0.0445
    0.0452
    0.0348
    0.0395
    0.0392
    0.0562
    0.0711
    0.0595
    0.0531
    0.0511
    0.0580
    0.0545
    0.0495
    0.0416
    0.0356
    0.0306
    0.0163
    0.0207
    0.0138
    0.0025
    0.0061
    0.0047
    0.0013
   -0.0002
    0.0014
    0.0019
    0.0013
    0.0012
    0.0009
    0.0014
    0.0011
    0.0012
    0.0014
    0.0011
    0.0013
    0.0013
    0.0013
    0.0012
    0.0012
    0.0012
    0.0011
    0.0011
    0.0010
    0.0010
    0.0011
    0.0011
    0.0010
    0.0010
    0.0012
    0.0012
    0.0012
    0.0011
    0.0010
    0.0010
    0.0009
    0.0009
    0.0009
    0.0009
    0.0009
    0.0008
    0.0007
    0.0007
    0.0007
    0.0007
    0.0008
    0.0009
    0.0009
    0.0010
    0.0010
    0.0009
    0.0009
    0.0008
    0.0007
    0.0007
    0.0007
    0.0007
    0.0007
    0.0008
    0.0008
    0.0008
    0.0007
    0.0008
    0.0009
    0.0008
    0.0008
    0.0008
    0.0008
    0.0008
    0.0008
    0.0008
    0.0007
    0.0006
    0.0007
    0.0008
    0.0008
    0.0007
    0.0007
    0.0007
    0.0007
    0.0007
    0.0006
    0.0006
    0.0006
    0.0005
    0.0006
    0.0006
    0.0005
    0.0005
    0.0004
    0.0005
    0.0006
    0.0006
    0.0007
    0.0008
    0.0008
    0.0007
    0.0006
    0.0007
    0.0007
    0.0007
    0.0007
    0.0008
    0.0007
    0.0007
    0.0007
    0.0006
    0.0004
    0.0003
    0.0003
    0.0004
    0.0003
    0.0003
    0.0003
    0.0002
    0.0002
    0.0002
    0.0002
    0.0001
    0.0001
    0.0001
    0.0002
    0.0003
    0.0003
    0.0004
    0.0004
    0.0003
    0.0003
    0.0003
    0.0001
    0.0001
    0.0001
    0.0000
   -0.0000
   -0.0001
   -0.0001
   -0.0002
   -0.0002
   -0.0002
   -0.0002
   -0.0003
   -0.0003
   -0.0003
   -0.0004
   -0.0004
   -0.0004
   -0.0004
   -0.0003
   -0.0002
   -0.0002
   -0.0002
   -0.0002
   -0.0002
   -0.0002
   -0.0001
   -0.0001
   -0.0002
   -0.0002
   -0.0002
   -0.0002
   -0.0002
   -0.0003
   -0.0003
   -0.0004
   -0.0005
   -0.0004
   -0.0004
   -0.0004
   -0.0003
   -0.0004
   -0.0003
   -0.0004
   -0.0006
   -0.0006
   -0.0006
   -0.0006
   -0.0007
   -0.0007
   -0.0007
   -0.0007
   -0.0007
   -0.0008
   -0.0008
   -0.0008
   -0.0008
   -0.0009
   -0.0009
   -0.0009
   -0.0009
   -0.0009
   -0.0010
   -0.0010
   -0.0010