Caros, Eu gostaria de expandir os dados abaixo para realizar uma análise temporal de base diária. O meu período inicial é '2012-07-01' até '2012-10-06'. É possível eu fazer isso com meu data frame ou eu terei que criar um novo data frame com a sequencia de dias e juntar as duas tabelas? Meu data frame final deveria repetir os valores apresentados nas colunas até que uma nova medida surgisse já que os pontos de medida que tenho são exporádicos. Alguém já expandiu um data frame assim pra me dizer como fazer? structure(list(Date.beg = structure(c(15635, 15617, 15615, 15610, 15609, 15605, 15604, 15601, 15593, 15593, 15586, 15581, 15580, 15577, 15572, 15565, 15552, 15540, 15530, 15516), class = "Date"), Date.end = structure(c(15619, 15619, 15616, 15615, 15610, 15607, 15604, 15602, 15595, 15594, 15587, 15582, 15581, 15579, 15572, 15567, 15554, 15541, 15533, 15517), class = "Date"), Pollster = structure(c(1L, 2L, 1L, 2L, 1L, 2L, 4L, 1L, 2L, 1L, 1L, 2L, 1L, 4L, 1L, 2L, 2L, 1L, 3L, 1L), .Label = c("Datafolha", "Ibope", "Veritá", "Vox Populi"), class = "factor"), Serra.PSDB = c(24, 22, 23, 19, 22, 17, 17, 21, 19, 20, 21, 20, 22, 22, 27, 26, 26, 30, 31.4, 31), Russomanno.PRB = c(23, 22, 25, 27, 30, 34, 34, 35, 35, 32, 35, 31, 31, 31, 31, 26, 25, 26, 17.7, 24), Haddad.PT = c(20, 22, 19, 18, 18, 18, 17, 15, 15, 17, 16, 16, 14, 14, 8, 9, 6, 7, 9.5, 6), Chalita.PMDB = c(11, 11, 11, 10, 9, 7, 5, 8, 6, 8, 7, 5, 7, 5, 6, 5, 5, 6, 4.3, 6), Others = c(8, 7, 7, 4, 7, 6, 4, 5, 6, 7, 9, 5, 8, 6, 10, 12, 15, 15, 8.6, 16), Null = c(8, 8, 8, NA, 8, 10, 10, NA, 13, 9, 8, 12, 10, NA, 10, 12, 14, 11, 13.1, 11), Undecided = c(6, 8, 6, NA, 6, 8, 13, NA, 6, 7, 4, 9, 7, 13, 6, 10, 9, 6, 13.3, 5), Round = structure(c(3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 2L), .Label = c("year before", "off campaign", "first", "second"), class = "factor"), Stage = structure(c(2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 1L, 1L, 1L, 1L, 1L, 1L), .Label = c("0", "1", "2"), class = "factor"), Serra.Haddad = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L), .Label = c("", "1", "0"), class = "factor"), N = c(3959, 1204, 2099, 1204, 1799, 1204, 2000, 1802, 1001, 1221, 1078, 1001, 1069, 1200, 1077, 805, 805, 1075, 1331, 1081), Err = c(2, 3, 2, 3, 2, 3, 2.2, 2, 3, 3, 3, 3, 3, 2.8, 3, 3, 3, 3, 2.7, 3)), .Names = c("Date.beg", "Date.end", "Pollster", "Serra.PSDB", "Russomanno.PRB", "Haddad.PT", "Chalita.PMDB", "Others", "Null", "Undecided", "Round", "Stage", "Serra.Haddad", "N", "Err"), row.names = c("6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25"), class = "data.frame") -- "Small steps toward a much better world"