Good afternoon all, please I want to plot Spectrum Power Density but for Documentary I saw this example
gmt spectrum1d data.g -S256 -D1.5 -Ndata
paste data.t data.g | gmt spectrum1d -S256 -D1.5 -Ndata -C > results.txt
but don’t quite understand or figure it out. I tried the first one it could not give me any result, I tried the second one it gave me
spectrum1d [WARNING]: File <stdin> is empty!
spectrum1d [ERROR]: Input data have 0 column(s) but at least 2 are needed"
Can someone help me out please. here is the data
2009 0.0055093072
2009.002739726 0.0034960002
2009.0054794521 -0.0035264487
2009.0082191781 0.0079802661
2009.0109589041 0.0056652576
2009.0136986301 0.000437069
2009.0164383562 0.0039079928
2009.0191780822 -0.0037045527
2009.0219178082 -0.0011096335
2009.0246575342 0.005610393
2009.0273972603 -0.004874576
2009.0301369863 0.0029357317
2009.0328767123 -0.0059494761
2009.0356164384 -0.0035013957
2009.0383561644 0.0020581783
2009.0410958904 -5.53E-06
2009.0438356164 -0.0022182039
2009.0465753425 -0.0028319893
2009.0493150685 0.0036694419
2009.0520547945 0.0003053058
2009.0547945205 -0.0039866874
2009.0575342466 -0.0042619567
2009.0602739726 0.0122691776
2009.0630136986 -0.0015608835
2009.0657534247 0.0087391465
2009.0684931507 0.0050584693
2009.0712328767 -0.0101878732
2009.0739726027 1.94E-05
2009.0767123288 -0.0151403382
2009.0794520548 0.0024268806
2009.0821917808 0.0103405388
2009.0849315068 -0.0037590937
2009.0876712329 0.005005081
2009.0904109589 0.0058689949
2009.0931506849 0.0019666197
2009.095890411 -0.0015168838
2009.098630137 0.0008263629
2009.101369863 0.0018818151
2009.104109589 0.0027913601
2009.1068493151 0.0077681494
2009.1095890411 0.0104234605
2009.1123287671 0.0052778617
2009.1150684932 0.0046911689
2009.1178082192 0.0049609154
2009.1205479452 -0.0023776758
2009.1232876712 0.0039842282
2009.1260273973 0.0038105446
2009.1287671233 0.0062364931
2009.1315068493 0.0034224777
2009.1342465753 0.0031151968
2009.1369863014 0.0015606471
2009.1397260274 -0.0027971784
2009.1424657534 0.0030693266
2009.1452054795 0.0135496301
2009.1479452055 -0.0002835999
2009.1506849315 -0.012725013
2009.1534246575 0.0151723437
2009.1561643836 0.0041854611
2009.1589041096 0.004076701
2009.1616438356 -0.008358352
2009.1643835616 0.0016920314
2009.1671232877 -0.0074392176
2009.1698630137 -0.001882594
2009.1726027397 0.0015927976
2009.1753424658 -0.0035448491
2009.1780821918 -0.0003616011
2009.1808219178 0.0096360637
2009.1835616438 0.0028424148
2009.1863013699 0.0071495664
2009.1890410959 -0.0014112276
2009.1917808219 0.001343006
2009.1945205479 -0.0042096315
2009.197260274 -0.0043068241
2009.2 -0.0071019789
2009.202739726 0.0013977516
2009.2054794521 -0.0063673434
2009.2082191781 0.0007584812
2009.2109589041 0.0024683937
2009.2136986301 -0.0119301736
2009.2164383562 0.0002682453
2009.2191780822 -0.0112333264
2009.2219178082 0.0019770187
2009.2246575342 0.0001649429
2009.2273972603 -0.0057730992
2009.2301369863 0.002675006
2009.2328767123 -0.0087519995
2009.2356164384 0.0110890308
2009.2383561644 0.0055665242
2009.2409817352 0.0024970151
2009.2437214612 0.008135592
2009.2464611872 -0.0043125049
2009.2492009132 0.0032259783
2009.2519406393 0.0076357299
2009.2546803653 -0.0013712179
2009.2574200913 -0.0103876036
2009.2601598174 -0.0010967011
2009.2628995434 -0.0009072006
2009.2656392694 -0.0134676802
2009.2683789954 0.0040920027
2009.2711187215 0.0065415689
2009.2738584475 0.0166413696
2009.2765981735 -0.0048483657
2009.2793378995 -0.0145001899
2009.2820776256 0.0008831863
2009.2848173516 -0.014032654
2009.2875570776 -0.000643978
2009.3176940639 0.0080010834
2009.32043379 -0.0164165359
2009.323173516 -0.0073707872
2009.325913242 -0.0033043114
2009.328652968 -0.0050677005
2009.3313926941 -0.0194233025
2009.3341324201 -0.0076973935
2009.3368721461 -0.003540747
2009.9150684932 0.0089618814
2009.9178082192 -0.0066672298
2009.9205479452 0.0068257923
2009.9232876712 -0.0102833865
2009.9369863014 0.0235976922
2009.9506849315 0.0231256443
2009.9534246575 0.0073706323
2009.9561643836 0.001294433
2009.9589041096 0.0041561702
2009.9616438356 0.0143124501
2009.9643835616 0.0079820278
2009.9671232877 0.0019475074
2009.9698630137 0.0012740855
2009.9726027397 -0.0048608189
2009.9753424658 0.0014096334
2009.9780821918 0.0059081632
2009.9808219178 -0.0022257601
2009.9835616438 -0.0016570127
2009.9863013699 -0.006265002
2009.9890410959 -0.000107802
2009.9917808219 9.42E-05
2009.9945205479 -0.0083712958
2010 0.008268541
2010.002739726 0.0036813172
2010.0054794521 0.0006065017
2010.0082191781 -0.0021209261
2010.0109589041 -0.0019746514
2010.0136986301 -0.0016961427
2010.0164383562 -0.0024218582
2010.0191780822 0.0003702116
2010.0219178082 -0.004551433
2010.0246575342 -0.0058862279
2010.0273972603 -0.0076829417
2010.0301369863 -0.0029300981
2010.0602739726 0.0027063789
2010.0630136986 -0.0028339414
2010.0657534247 0.0064287642
2010.0684931507 0.0018353757
2010.0712328767 0.0029644877
2010.0739726027 0.0027382267
2010.0767123288 0.000350858
2010.0794520548 0.001829662
2010.0821917808 -0.0007606137
2010.0849315068 0.0022547089
2010.0931506849 0.0172439215
2010.095890411 -0.0048017114
2010.098630137 0.0026131603
2010.101369863 -0.0044581231
2010.104109589 0.0038054398
2010.1068493151 0.0026939204
2010.1095890411 -0.0006845685
2010.1123287671 0.0006727253
2010.1150684932 -0.0026690931
2010.1178082192 0.004663358
2010.1205479452 -0.0004575385
2010.1232876712 0.0115367466
2010.1260273973 0.006483258
2010.1287671233 -0.0064071722
2010.1315068493 -0.0057448393
2010.1342465753 -0.0022334322
2010.1369863014 -0.0029958586
2010.1397260274 -0.0039162946
2010.1424657534 -0.0065022164
2010.1452054795 -0.0073013617
2010.1479452055 -0.0184361119
2010.1698630137 -0.0006977543
2010.1726027397 -0.0056542188
2010.1890410959 0.013947912
2010.1917808219 0.001017212
2010.1945205479 -0.0027361275
2010.197260274 0.0007022251
2010.2 0.0016397415
2010.202739726 -0.0011446508
2010.2054794521 -0.0088916004
2010.2082191781 -0.0095107014
2010.2109589041 -0.0066297456
2010.2136986301 -0.0027750182