[R] How to Reformat a dataframe

[Rui Barradas]

Às 04:13 de 28/10/2023, Paul Bernal escreveu:
> Dear friends,
> 
> I have the following dataframe:
> dim(alajuela_df)
> [1] 126  12
> 
> dput(alajuela_df)
> structure(list(...1 = c(92.9925354, 76.0024254, 44.99547465,
> 28.00536465, 120.0068103, 31.9980405, 85.0071837, 40.1532933,
> 19.3120917, 113.12581575, 28.45843425, 114.400074, 143.0000925,
> 46.439634, 20.7845679, 50.82874575, 36.9818061, 44.6273556, 40.57804605,
> 30.38398005, 47.94042705, 36.38715225, 28.06199835, 28.4867511,
> 122.86681215, 56.4071652, 35.9057658, 52.669341, 24.94714485,
> 54.4249857, 61.164396, 47.88379335, 30.582198, 26.051502, 43.041612,
> 64.59073485, 51.6499344, 78.8202902886201, 35.2390173175627,
> 82.2394568898745, 47.760850180466, 54.3654763342294, 49.4878058854839,
> 32.8813266149642, 38.9301880693548, 51.9506275455197, 55.4404001992832,
> 50.7979761262545, 37.1198211413082, 36.9144309425627, 33.7829493281362,
> 32.8647492475806, 42.8926863444444, 63.9814428257048, 39.219040238172,
> 88.7557324417563, 42.0964144925627, 129.15973304991, 117.872998635484,
> 35.4004098300179, 83.4102757505377, 38.6443638074373, 100.491764259319,
> 40.219162961828, 35.901029409319, 85.2814714674731, 26.5821299974014,
> 33.0141992892473, 52.4006692386201, 62.7450310643369, 33.3732853655914,
> 36.4616827405018, 146.501706130466, 59.9869292767025, 132.659282967294,
> 29.9692075517921, 45.8436438112007, 29.3028312143369, 49.9042699517921,
> 27.4678688861111, 29.8483957580645, 26.1192323867384, 62.1371491517921,
> 53.92489050681, 64.5840869873656, 28.4476420455197, 52.9893180218638,
> 36.4730500781362, 40.8595060662186, 33.4571194806452, 35.6201445262545,
> 47.5373940344086, 62.5177012273297, 31.9702480361111, 29.6637272685484,
> 49.9578249978495, 26.1936613831541, 30.8051128442652, 153.165249601165,
> 36.7652008047491, 14.3854334390681, 55.9930862447133, 87.5882628859319,
> 88.414763059767, 58.6046644034946, 20.5301898890681, 39.0037205346774,
> 67.5971386298632, 25.1295804696237, 32.7864973072581, 59.5662701215054,
> 56.3503435331631, 25.2768483884409, 120.187620533964, 51.3699688189953,
> 42.6889983487868, 34.5183987020052, 32.9513272936733, 20.6141437461215,
> 43.4197954932283, 107.258904254306, 23.7548470509806, 48.4457090643702,
> 72.3249287581108, 32.7272590911596, 48.6115621286089), ...2 = c(34.9996266,
> 22.00219245, 22.9932822, 19.00060635, 35.99071635, 23.9560551,
> 44.99547465, 22.00219245, 17.35822905, 38.9639856, 16.4804067,
> 93.87035775, 81.2693595, 65.4119235, 14.6114946, 33.32893245,
> 23.3330844, 66.68618175, 29.1097218, 18.77407155, 28.1469489,
> 20.64298365, 15.31941585, 25.79665035, 39.5869563, 35.9057658,
> 28.11863205, 27.09922545, 18.03783345, 52.3295388, 47.99706075,
> 21.88892505, 18.8590221, 17.64139755, 29.2796229, 27.750513,
> 26.9576412, 36.8932410314484, 19.1194611744253, 37.5166237491071,
> 37.9625421619439, 23.444984650496, 37.4408609345785, 43.1033210084325,
> 28.1252430606151, 38.4216392645833, 41.0532302780651, 34.4822260610119,
> 27.8096188059524, 25.9720387760913, 19.5989670673372, 21.1366557174603,
> 34.0091174203373, 111.149568174301, 24.5438738482759, 62.923693488747,
> 36.056976280754, 36.934798630754, 47.0895472967433, 23.0987961767857,
> 45.1991799260913, 23.0274422095238, 26.8716961246169, 21.5009916962302,
> 25.315076619246, 41.2098751296627, 15.6537752838123, 20.1723471152778,
> 31.7437694203373, 34.6486999232143, 27.6318028338123, 23.9637897951389,
> 50.6646878095238, 33.3208231933532, 38.0673028746602, 19.9469359998016,
> 27.0503264451389, 19.8385753555556, 29.0062549955939, 17.231889453373,
> 25.3320442555556, 17.651735447619, 37.12988188841, 37.7982565469246,
> 33.1890524548611, 15.4283008803571, 33.5040593288314, 24.9726150325397,
> 29.0612348127976, 30.2629592267857, 32.8065534719349, 43.3676303365079,
> 39.19334780424, 23.9252474159722, 15.8641806903257, 27.51501019685,
> 21.5861832758362, 18.5136698379577, 54.9166790494253, 29.2865335598214,
> 12.8130786005824, 46.2078437446569, 37.9351942968391, 31.8758398080357,
> 25.4830299994048, 17.4062173291544, 19.1528843310516, 37.2160194109127,
> 25.3577400835684, 21.3381885368056, 37.5842732179795, 62.4856267757438,
> 19.2393143990079, 49.4806272500855, 29.5274325254668, 18.7819282827049,
> 19.5089694997422, 25.524181172185, 15.9275217745507, 25.461470312583,
> 37.4026236465872, 14.6120197959536, 26.5773978462589, 27.6541154512847,
> 22.5193597452548, 27.9919830179818), ...3 = c(24.04100565, 22.00219245,
> 15.0079305, 12.99743415, 22.9932822, 13.9885239, 27.0142749,
> 16.3671393, 12.2895129, 28.68496905, 16.56535725, 32.70596175,
> 46.01488125, 24.94714485, 10.8170367, 19.68021075, 15.0079305,
> 26.41962105, 21.9738756, 15.71585175, 21.26595435, 13.28060265,
> 11.6099085, 15.5742675, 25.96655145, 20.5013994, 15.99902025,
> 18.03783345, 11.07188835, 32.59269435, 29.7326925, 15.82911915,
> 13.4788206, 22.11545985, 17.6130807, 22.3136778, 17.01842685,
> 24.8211230265233, 13.237941302509, 22.3448026530466, 26.8162566663605,
> 19.755485530466, 28.9524567137097, 35.9159180773958, 29.0510074712366,
> 29.6768770591437, 19.74645255681, 21.3046743438172, 18.2600040043011,
> 14.1888055630824, 13.2245440831541, 14.2163781231183, 19.9802103525986,
> 56.1211624398027, 13.9762431155914, 26.4956908674731, 29.4013819718638,
> 26.8419717732975, 44.6725035525986, 14.7828541642548, 24.4708500199821,
> 10.5834818923835, 20.2093501674731, 14.2639281024194, 17.2504254149642,
> 19.7845974174731, 10.850022277957, 16.4476927547907, 20.9176435624552,
> 22.8783063162186, 25.7326244974014, 20.1825218974014, 51.1908599407987,
> 40.9448287612007, 20.2191781781362, 10.3501469886201, 21.1253173781362,
> 13.4899172867384, 23.1471303187276, 12.8374587906722, 16.9906343861111,
> 13.1835697522092, 17.8847127055556, 32.4731512323477, 17.6332611074373,
> 13.4532405190011, 19.4829400781362, 24.2590318624552, 26.5715576967742,
> 19.0041586430108, 28.5379041193548, 29.7763011256272, 32.1823265123117,
> 29.7879391141577, 14.0165763547689, 37.6846187388183, 16.3880639974014,
> 13.8338638285842, 44.6845644331541, 18.6545178642578, 11.2407237620968,
> 34.0711681997412, 29.0336803177268, 18.1338299396953, 39.7917534240684,
> 10.6510092909498, 16.2566291560036, 28.5616029884409, 38.8678199534946,
> 15.4433570447133, 17.2045135497178, 49.4081574106672, 32.6989511276381,
> 38.5789940244859, 32.1769916573031, 28.9463686859436, 13.4928541224532,
> 19.5413894417691, 10.7006215291469, 29.8260981653798, 25.4362115265858,
> 11.5257100913926, 16.8079233526533, 27.4408077645845, 40.6526894052778,
> 18.8694236080065), ...4 = c(43.01329515, 25.00377855, 15.99902025,
> 12.99743415, 47.99706075, 15.99902025, 62.0139015, 12.5160477,
> 20.13328035, 18.4625862, 16.7635752, 31.4317035, 88.914909, 47.82715965,
> 10.50555135, 14.18674185, 13.28060265, 72.3778686, 21.9738756,
> 12.82753305, 28.74160275, 46.69448565, 8.6083224, 15.291099,
> 23.6162529, 15.8008023, 33.27229875, 18.0661503, 7.95703485,
> 44.76893985, 22.22872725, 21.03941955, 26.92932435, 22.65348,
> 46.07151495, 15.9140697, 22.4835789, 17.7829818, 18.2384985351852,
> 20.5132854851852, 61.5926915188615, 15.693652737963, 19.5663315662037,
> 24.3550255328704, 53.0975022597222, 36.7972078271926, 36.7901429763889,
> 18.8871641546296, 20.9930987768519, 20.1431562884259, 10.6699463958333,
> 15.75360755, 37.4331277462963, 54.1371851226852, 19.1322272638889,
> 25.599830762963, 33.3566375162037, 19.421600999537, 43.1187841560185,
> 11.9100427961142, 15.1950489439815, 20.8816316998207, 63.5722125117055,
> 21.3153340421296, 17.4206699247302, 42.4256331148148, 26.851255354471,
> 13.8370396062451, 65.4289660486111, 70.8573662263666, 29.3347708393519,
> 30.1223113805556, 104.141421110648, 53.9017718844937, 50.7707224048161,
> 9.85083922838523, 16.679586024537, 8.50117283796296, 29.7760417518519,
> 12.3623151717593, 58.2226773143519, 43.8683067041667, 18.6122984347222,
> 236.356918314815, 26.518730025, 18.768390700463, 13.0113303819444,
> 27.8125653564815, 63.6389740583333, 80.2297640347222, 23.5851393240741,
> 29.110683174537, 26.2230636560185, 18.1385155833333, 35.5873651333171,
> 71.1575933980326, 14.1058989912037, 22.352831962963, 37.7497695597222,
> 13.9331137675926, 35.9453219891346, 66.8659299971482, 25.6415400254835,
> 15.1121959384259, 76.2625002964008, 19.6161482467593, 30.3616062425926,
> 50.555977574537, 48.0870803657407, 60.781296601654, 17.5123175343251,
> 46.3781020162159, 32.9047155318093, 45.2884006349093, 39.7311056806747,
> 26.0169754879377, 32.1970505053614, 22.6549346464934, 16.8551283466882,
> 22.976903453078, 24.6695897641777, 10.0811787631618, 22.3981217825916,
> 58.8947786812898, 75.1529521249874, 15.0698117186505), ...5 = c(53.0091432,
> 44.99547465, 38.0012127, 44.0043849, 60.00340515, 38.99230245,
> 51.536667, 54.7081542, 31.0919013, 60.3715242, 73.48222575, 68.526777,
> 147.813957, 79.0040115, 47.6289417, 58.07785935, 59.8051872,
> 96.19233945, 59.21053335, 57.9929088, 122.6685942, 66.4879638,
> 13.90357335, 30.89368335, 61.3342971, 35.6225973, 75.8325243,
> 28.91150385, 14.80971255, 95.17293285, 41.71072005, 49.5544875,
> 58.58756265, 54.11350035, 61.47588135, 38.02952955, 68.526777,
> 62.15548575, 77.6784310738351, 50.5600232415771, 131.876932720878,
> 20.6789463878136, 30.9527021610215, 51.8652541034946, 50.5158733141577,
> 65.3799359472222, 100.009112523321, 53.1610290997312, 60.1700076922043,
> 32.2775382972222, 33.8153090258961, 54.401286830914, 95.0948838978495,
> 76.6519537191756, 57.9907266771505, 100.305556442832, 67.9363689859319,
> 36.8437233959677, 104.980864599731, 29.1320843302867, 48.3498203616488,
> 45.5838020353047, 70.4890298277778, 38.6008566758961, 55.4927880633513,
> 87.7219305972222, 54.7773224196237, 43.3184540353047, 94.7221976139785,
> 109.994754833695, 69.5983515602151, 65.4988362689964, 130.990821687186,
> 67.8702794202509, 64.9310106890681, 40.9020659196237, 28.7862263164875,
> 73.8719355863588, 44.2015371620968, 26.9290029520609, 87.4829120246416,
> 49.3287477370072, 52.4560850095878, 105.858686949731, 51.1010205514337,
> 84.4875812418607, 44.0169194196237, 56.9543198177419, 109.201614576703,
> 155.199816965233, 59.9808227158602, 47.1291171577061, 93.1677987708781,
> 80.5607447070789, 116.459338258333, 82.8986102315412, 64.9543881602151,
> 50.5573167326165, 107.571298157258, 67.0962686045699, 77.3657611358944,
> 70.7801148664875, 73.4220260571224, 30.2768192108423, 53.2795572765233,
> 39.5983236376344, 119.826015501434, 41.0489109464158, 79.0048065370072,
> 67.9431183426523, 50.6200062464158, 81.1957762876344, 51.8652033564516,
> 45.4861804724328, 64.5839189739347, 69.7335909436077, 83.2834162480453,
> 60.7586179353601, 59.0404232122419, 52.2671818563404, 46.4495093287553,
> 40.0792220246565, 33.0039252222804, 69.8833876014689, 71.1205502192063,
> 25.9164851853527), ...6 = c(62.0139015, 60.9944949, 44.0043849,
> 49.01646735, 62.0139015, 54.9913227, 75.29450415, 45.1370589,
> 38.59586655, 84.63906465, 62.66518905, 137.9030595, 93.7287735,
> 81.58084485, 52.58439045, 56.49211575, 59.0123154, 90.18916725,
> 88.37688885, 86.79114525, 104.00779005, 53.43389595, 61.5041982,
> 60.1449894, 77.10678255, 61.13607915, 75.57767265, 52.01805345,
> 56.067363, 108.170367, 79.37213055, 61.64578245, 57.05845275,
> 63.11825865, 85.99827345, 49.1580516, 67.7339052, 65.89330995,
> 49.4663906333333, 62.902124174537, 125.42931227963, 56.1662971796296,
> 49.3735742916667, 89.0394507013889, 92.5179659694444, 86.3792399597222,
> 70.559909350463, 68.0506344111111, 77.1285445736111, 68.6415301606481,
> 60.7908582935185, 107.425126938426, 90.4807259277778, 81.396785325,
> 72.1131410115741, 68.8834469532407, 91.5248660726852, 48.0119183564815,
> 82.2235674268519, 33.5023294574074, 58.6514503578704, 64.0816433337963,
> 82.6175561916667, 114.884519368981, 59.435669787037, 93.4450806138889,
> 110.401979493519, 78.3836627305556, 84.819803062963, 117.287431325463,
> 86.534895237037, 45.5510617347222, 69.754801874537, 103.916983855093,
> 69.9525828361111, 71.7655604175926, 52.4842327027778, 78.1433190962963,
> 50.0991498740741, 33.9123993962963, 107.815794591204, 71.0580761560185,
> 85.9337739583333, 104.136789033333, 58.433218337963, 56.3486961486111,
> 105.916555494444, 100.764898941204, 89.4245249023148, 101.514945875463,
> 62.5367144527778, 80.3241535347222, 50.7403866902778, 52.1234550583333,
> 106.172281121296, 119.406737793519, 109.830748223148, 98.7653273018519,
> 110.709881538426, 60.5554089296296, 57.7968757921296, 164.881151758333,
> 114.807172417593, 42.3015284018519, 47.3479581421296, 69.258295625,
> 79.6316142773148, 38.6308256240741, 93.6480180388889, 74.1446128060185,
> 68.0709980717593, 92.146788000463, 79.0773117590429, 89.7252644488388,
> 53.5003470216826, 62.6669327681478, 74.0358775483401, 49.6010839106274,
> 62.4195698709396, 39.292332545434, 99.9687981401921, 40.2746960761065,
> 76.0016770163077, 69.3366089449157, 89.2159743205815, 48.0730413172471
> ), ...7 = c(91.0103559, 63.00499125, 62.0139015, 55.9540956,
> 60.00340515, 88.0087698, 75.80420745, 35.2827951, 85.48857015,
> 119.63869125, 74.72816715, 93.445605, 125.160477, 73.87866165,
> 73.3972752, 56.77528425, 42.95666145, 118.8175026, 82.4586672,
> 93.81372405, 99.42046035, 58.332711, 87.1026306, 72.12301695,
> 54.73647105, 49.41290325, 98.68422225, 60.7679601, 61.02281175,
> 178.48110555, 60.22993995, 54.84973845, 64.70400225, 94.43669475,
> 75.06796935, 59.7485535, 60.45647475, 151.8915834, 77.8770211688172,
> 76.8059709947133, 95.5358418702509, 45.1915104771505, 44.3152274541219,
> 79.5500496827957, 73.7685236509857, 61.4291771547491, 97.5867666978495,
> 88.5714360972222, 116.80599130914, 81.5496015871864, 109.510765562724,
> 136.904898995341, 164.49342743405, 86.2917435997312, 98.5759449758961,
> 95.1858395146057, 111.213971651613, 86.007780062724, 136.084454635305,
> 37.0162295108423, 83.3701686708781, 62.8513968664875, 86.4204719321685,
> 72.132523562724, 104.871318649552, 109.474532174014, 95.9775948796595,
> 50.6672348277778, 88.3225895139785, 121.58091591147, 76.8334928077061,
> 55.6079161882617, 95.6947985246416, 127.831395367742, 49.1690975396953,
> 86.238831349552, 63.4233667882616, 111.597500887007, 31.898796199552,
> 48.6903161045699, 106.279244610842, 74.6957567051971, 47.4088856058244,
> 130.007276330914, 88.8368093008065, 50.7865072945341, 101.199211870251,
> 75.9300093696237, 73.9893747821685, 103.683178131541, 140.684961650806,
> 104.768995695161, 57.2737217064516, 58.7820591501792, 92.9597528102151,
> 99.9310094340502, 94.2899004702509, 115.778989568369, 96.1018067252688,
> 39.8479145108423, 87.5417785945341, 108.026972772133, 67.422470597043,
> 70.607930149552, 88.305961399552, 59.7161430551971, 69.4862005951613,
> 54.6980047913978, 126.661692942025, 127.072473339516, 110.780456578853,
> 93.7374850757168, 69.9698735972591, 106.738637147415, 64.5152740485102,
> 87.1268323629885, 43.3975092336417, 52.5152792378864, 63.7137140203338,
> 84.6634689840074, 83.2759556945253, 47.5837274800544, 86.8166065787247,
> 112.648942563551, 143.549465228576, 65.8425685705771), ...8 =
> c(88.99985955,
> 92.9925354, 79.99510125, 69.00816345, 66.00657735, 89.9909493,
> 44.71230615, 62.49528795, 91.8032277, 83.67629175, 85.14876795,
> 115.8159165, 124.59414, 66.79944915, 73.057473, 71.6416305, 59.89013775,
> 79.59866535, 116.8919568, 133.7687994, 100.77966915, 58.02122565,
> 101.85570945, 97.38164715, 77.61648585, 72.9442056, 95.3145171,
> 71.358462, 85.71510495, 104.3759091, 96.5604585, 94.71986325,
> 51.16854795, 87.8388687, 97.6931325, 69.093114, 64.08103155,
> 116.463431853136, 69.5767840669355, 88.8546045972222, 155.196044768369,
> 76.1697722321685, 88.3709345302867, 96.0580289428316, 82.8718327085125,
> 81.7255585009857, 126.300796887814, 113.122145047222, 92.5947124141577,
> 96.673455249104, 66.9335905003584, 106.393679192832, 124.757342490323,
> 91.3846322578853, 112.209577888441, 80.9145700066308, 118.335473354122,
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> 178.942193182796, 28.2040562390681, 138.280685162724, 296.330997365233,
> 173.333545410842, 149.083377365233, 65.756343680914, 159.737685213978,
> 105.61780765224, 46.7002200658602, 86.7429017277778, 189.154748022133,
> 96.7353497258961, 68.4664725972222, 499.277855419375, 170.849271829193,
> 148.879966449353, 60.8120779047451, 91.4588421221316, 43.0376842705498,
> 108.148547912706, 121.468512697252, 42.6455518427129, 96.4984871785073,
> 109.87928815051, 85.3031155445198, 58.5462485275265, NA)), row.names =
> c(NA,
> -126L), class = "data.frame")
> 
> What I want to do is, instead of having 12 observations  by row, I want to
> have one observation by row. I want to have a single column with 1509
> observations instead of 126 rows with 12 columns per row.
> 
> I tried the following:
> df = data.frame(matrix(nrow = Length, ncol = 1))
> colnames(df) = c("aportes_alajuela")
> 
> 
> 
> for (row in 1:nrow(alajuela_df)){
>    for (col in 1:ncol(alajuela_df)){
>      df[i,1]=alajuela_df[i,j]
>    }
> }
> 
> But I am not getting the data in the structure I want.
> 
> Any help will be greatly appreciated.
> 
> Best regards,
> Paul
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Hello,

Here are two base R way with ?stack and with ?reshape.


# 1. With stack()
df_long <- stack(alajuela_df)[1]
df_long <- df_long[complete.cases(df_long), , drop = FALSE]
head(df_long)



# 2. With reshape
df_long <- reshape(
   alajuela_df, direction = "long",
   varying = names(alajuela_df),
   v.names = "x"
)[2]

# 1512 rows, only one column
dim(df_long)
# [1] 1512    1

# there are NA's in the data
df_long[complete.cases(df_long), , drop = FALSE] |> dim()
# [1] 1509    1

# keep the rows with values not NA
df_long <- df_long[complete.cases(df_long), , drop = FALSE]

# check the dimensions again
dim(df_long)
# [1] 1509    1



Hope this helps,

Rui Barradas


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