Hello, I have tried to apply this approach -- which worked for this example -- to a larger dataset. Although I have not received error messages, the variable I have set (my.data) is empty. Do you have any tip about this? Many thanks Luigi
# code:: my.data<-structure(list( column_1 = 1:120, column_2 = structure(c( 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8, 1,2,3,4,5,6,7,8), .Label = c("a", "b", "c", "d", "e", "f", "g", "h"), class = "factor"), column_3 = structure(c( 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 0,0,0,0,0,0,0,0)), column_4 = structure(c( 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)), column_5 = structure(c( 192.0519108,183.6403531,53.46798757,83.60638077,69.60749873,159.4706861,256.8765622,499.2899303, 2170.799076,1411.349719,2759.472348,2098.973397,2164.739515,1288.676574,1611.486543,6205.229575, 870.7424981,465.9967135,191.8962375,864.0937485,2962.693675,1289.259137,2418.651212,7345.712517, 0,168.1198893,674.4342961,101.1575401,47.81596237,0,0,1420.793922, 142.6871331,5.466468742,291.9564635,80.73914133,73.02239621,64.47806871,144.3543635,3167.959757, 3164.748333,1092.634557,28733.20269,1207.87783,729.6090973,151.8706088,241.2466141,9600.963594, 1411.718287,12569.96285,1143.254476,6317.378481,16542.27718,79.68025792,1958.495138,7224.503437, 208.4382941,69.48609769,656.691151,0.499017582,7114.910926,187.6296174,41.73980805,8930.784541, 4.276752185,0.432300363,60.89228665,1.103924786,0.490686366,1.812993239,7.264531581,1518.610307, 2172.051528,595.8513744,17141.84336,589.6565971,1340.287628,117.350942,593.7034054,24043.61463, 0,81.83292179,1539.864321,36.41722958,8.385131047,161.7647376,65.21615696,7265.573875, 97.84753179,154.051827,0.613835842,10.06138851,45.04879285,176.8284258,18795.75462,30676.769, 5780.34957,944.2200834,2398.235596,1083.393165,2541.714557,1251.670895,1547.178549,1792.679176, 3067.988416,8117.210173,23676.02226,8251.937547,17360.80494,18563.61561,16941.865,31453.96708, 2767.493803,4796.33016,12292.93705,3864.657567,9380.673835,14886.44683,8457.88646,26050.47191)), .Names = c("row", "stimulation", "positivity", "group", "copy"), row.names = c(NA, -120L)), class = "data.frame") attach(my.data) # results: > my.data [1] column_1 column_2 column_3 column_4 column_5 .Names row.names <0 rows> (or 0-length row.names) On Thu, Mar 13, 2014 at 7:29 PM, Rui Barradas <ruipbarra...@sapo.pt> wrote: > Hello, > > You're misplacing one close parenthesis. See the commented lines below. > > > > structure(list( > column_1 = 1:32, > column_2 = structure(c(1, 2, 3, 4, 5, 6, 7, 8, > 1, 2, 3, 4, 5, 6, 7, 8, > 1, 2, 3, 4, 5, 6, 7, 8, > 1, 2, 3, 4, 5, 6, 7, 8), > .Label = > c("Unstimulated", "ESAT6", "CFP10", "Rv3615c", "Rv2654", "Rv3879", > "Rv3873", "PHA"), > class = "factor"), > column_3 = > structure(c(1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, > 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4), .Label = c("bd", "2m", "1m", > "0.5m"), class = "factor"), > column_4 = > c(71.62097178, 2.892223468, 144.8618621, 40.90079262, 37.0516856, > 32.78206822, 72.44424152, 1512.516293, 3164.748333, 1092.634557, > 28733.20269, 1207.87783, 729.6090973, 151.8706088, 241.2466141, > 9600.963594, 682.865522, 5869.375226, 554.8924896, 2982.759858, > 7690.028092, 40.37298719, 942.3549279, 3403.679967, 103.9862389, > 35.28562613, 321.5985377, 0.274424607, 3352.874906, 93.76421187, > 21.3709382, 4193.183281)), # close 2 )) here > .Names = c("row", "stimulation", "type", "copy"), row.names = c(NA, > -32L), class = "data.frame") # and only one ) after df > > > Hope this helps, > > Rui Barradas > > Em 13-03-2014 18:58, Luigi Marongiu escreveu: >> >> dear all, >> I have tried to create a dataframe using the structure() function, but it >> did not really work. In column 1 i have the row number, in column 2 and 3 >> factors (8 and 4 levels respectively) and in column 4 the actual data. >> any clue on what went wrong? >> best regards >> luigi >> >> my.data<-structure(list( >> column_1 = 1:32, >> column_2 = structure(c(1, 2, 3, 4, 5, 6, 7, 8, >> 1, 2, 3, 4, 5, 6, 7, 8, >> 1, 2, 3, 4, 5, 6, 7, 8, >> 1, 2, 3, 4, 5, 6, 7, 8), >> .Label = >> c("Unstimulated", "ESAT6", "CFP10", "Rv3615c", "Rv2654", "Rv3879", >> "Rv3873", "PHA"), >> class = "factor"), >> column_3 = >> structure(c(1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, >> 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4), .Label = c("bd", "2m", "1m", >> "0.5m"), class = "factor"), >> column_4 = >> c(71.62097178, 2.892223468, 144.8618621, 40.90079262, 37.0516856, >> 32.78206822, 72.44424152, 1512.516293, 3164.748333, 1092.634557, >> 28733.20269, 1207.87783, 729.6090973, 151.8706088, 241.2466141, >> 9600.963594, 682.865522, 5869.375226, 554.8924896, 2982.759858, >> 7690.028092, 40.37298719, 942.3549279, 3403.679967, 103.9862389, >> 35.28562613, 321.5985377, 0.274424607, 3352.874906, 93.76421187, >> 21.3709382, 4193.183281), >> .Names = c("row", "stimulation", "type", "copy"), class = "data.frame")) >> attach(my.data) >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help@r-project.org mailing list >> 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. >> > ______________________________________________ R-help@r-project.org mailing list 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.