遇到困扰我的错误。我是R的新手，并且会不断出现这种错误。
我运行以下代码，由于不适用，因此无法使用。然后，我用NA修复程序再次运行它。但这是否真的有必要，感觉我做错了什么？感谢帮助。
R> datxts <- xts(dat, order.by = as.POSIXct( dat$Date, format="%Y / %m / %d" ))
Error in xts(dat, order.by = as.POSIXct(dat$Date, format = "%Y / %m / %d")) :
'order.by' cannot contain 'NA', 'NaN', or 'Inf'
R> datxts <- xts(dat, order.by = na.locf( as.POSIXct( dat$Date, format="%Y / %m / %d" )))
以下是一些输入数据：
X Date Day.of.Week X.HBC.HEALTH..and..BEAUTY.CARE ALCOHOL..BEER.
0001-01-18 " 1" "1/1/18" "Monday" "$38.94 " "$510.37 "
0001-02-18 " 2" "1/2/18" "Tuesday" "$31.77 " "$392.83 "
0001-03-18 " 3" "1/3/18" "Wednesday" "$84.39 " "$325.54 "
0001-04-18 " 4" "1/4/18" "Thursday" "$63.84 " "$435.39 "
0001-05-18 " 5" "1/5/18" "Friday" "$71.40 " "$392.62 "
0001-06-18 " 6" "1/6/18" "Saturday" "$75.91 " "$611.53 "
0001-07-18 " 7" "1/7/18" "Sunday" "$60.97 " "$432.04 "
0001-08-18 " 8" "1/8/18" "Monday" "$77.94 " "$375.45 "
0001-09-18 " 9" "1/9/18" "Tuesday" "$63.14 " "$291.42 "
0001-10-18 " 10" "1/10/18" "Wednesday" "$36.31 " "$331.06 "
0001-11-18 " 11" "1/11/18" "Thursday" "$41.70 " "$342.22 "
0001-12-18 " 12" "1/12/18" "Friday" "$37.04 " "$502.85 "
0001-12-18 " 13" "1/13/18" "Saturday" "$81.75 " "$771.83 "
0001-12-18 " 14" "1/14/18" "Sunday" "$92.13 " "$621.16 "
0001-12-18 " 15" "1/15/18" "Monday" "$24.40 " "$389.88 "
0001-12-18 " 16" "1/16/18" "Tuesday" "$27.84 " "$355.42 "
0001-12-18 " 17" "1/17/18" "Wednesday" "$51.02 " "$351.90 "
0001-12-18 " 18" "1/18/18" "Thursday" "$69.48 " "$577.52 "
0001-12-18 " 19" "1/19/18" "Friday" "$42.72 " "$506.53 "
0001-12-18 " 20" "1/20/18" "Saturday" "$73.75 " "$568.14 "
0001-12-18 " 21" "1/21/18" "Sunday" "$74.19 " "$558.54 "
0001-12-18 " 22" "1/22/18" "Monday" "$43.20 " "$460.79 "
0001-12-18 " 23" "1/23/18" "Tuesday" "$46.27 " "$516.35 "
0001-12-18 " 24" "1/24/18" "Wednesday" "$83.28 " "$557.09 "
0001-12-18 " 25" "1/25/18" "Thursday" "$33.10 " "$464.18 "
0001-12-18 " 26" "1/26/18" "Friday" "$47.70 " "$454.37 "
0001-12-18 " 27" "1/27/18" "Saturday" "$58.17 " "$750.93 "
0001-12-18 " 28" "1/28/18" "Sunday" "$41.61 " "$580.73 "
0001-12-18 " 29" "1/29/18" "Monday" "$43.47 " "$367.86 "
0001-12-18 " 30" "1/30/18" "Tuesday" "$22.75 " "$274.31 "
0001-12-18 " 31" "1/31/18" "Wednesday" "$31.93 " "$380.82 "
0002-01-18 " 32" "2/1/18" "Thursday" "$41.93 " "$398.98 "
0002-02-18 " 33" "2/2/18" "Friday" "$45.70 " "$594.28 "
0002-03-18 " 34" "2/3/18" "Saturday" "$59.35 " "$763.58 "
0002-04-18 " 35" "2/4/18" "Sunday" "$39.03 " "$718.06 "
0002-05-18 " 36" "2/5/18" "Monday" "$16.97 " "$440.09 "
0002-06-18 " 37" "2/6/18" "Tuesday" "$24.44 " "$358.66 "
ALCOHOL..WINE. AUTOMOTIVE BEVERAGES CANDY CLEANING.MATERIALS
0001-01-18 "$21.98 " "$12.15 " "$291.03 " "$172.93 " "$0.00 "
0001-02-18 "$0.00 " "$17.98 " "$281.33 " "$154.09 " "$0.00 "
0001-03-18 "$39.97 " "$68.19 " "$273.11 " "$142.65 " "$0.00 "
0001-04-18 "$59.63 " "$0.00 " "$243.23 " "$151.48 " "$5.28 "
0001-05-18 "$79.63 " "$37.94 " "$463.82 " "$221.09 " "$0.00 "
0001-06-18 "$71.64 " "$3.99 " "$374.48 " "$210.33 " "$0.00 "
0001-07-18 "$46.96 " "$0.00 " "$373.76 " "$205.70 " "$0.00 "
0001-08-18 "$8.69 " "$31.96 " "$199.34 " "$128.98 " "$0.00 "
0001-09-18 "$0.00 " "$14.48 " "$170.31 " "$128.19 " "$0.00 "
0001-10-18 "$0.00 " "$0.00 " "$226.96 " "$131.95 " "$0.00 "
0001-11-18 "$33.67 " "$21.97 " "$227.37 " "$140.46 " "$0.00 "
0001-12-18 "$43.66 " "$5.99 " "$195.05 " "$147.84 " "$0.00 "
0001-12-18 "$47.35 " "$16.47 " "$276.58 " "$138.59 " "$0.00 "
0001-12-18 "$31.37 " "$14.16 " "$320.96 " "$196.92 " "$0.00 "
0001-12-18 "$0.00 " "$29.95 " "$219.63 " "$125.36 " "$5.28 "
0001-12-18 "$33.97 " "$6.99 " "$166.44 " "$151.61 " "$0.00 "
0001-12-18 "$11.99 " "$18.97 " "$206.83 " "$108.18 " "$0.00 "
0001-12-18 "$29.97 " "$16.97 " "$200.65 " "$171.75 " "$0.00 "
0001-12-18 "$18.68 " "$23.46 " "$274.90 " "$158.76 " "$8.37 "
0001-12-18 "$0.00 " "$0.00 " "$255.10 " "$157.99 " "$0.00 "
0001-12-18 "$8.69 " "$7.88 " "$273.15 " "$156.81 " "$0.00 "
0001-12-18 "$9.99 " "$20.47 " "$201.78 " "$120.84 " "$3.99 "
0001-12-18 "$8.69 " "$16.98 " "$237.50 " "$150.79 " "$0.00 "
0001-12-18 "$42.36 " "$0.00 " "$240.37 " "$128.63 " "$0.00 "
0001-12-18 "$63.35 " "$15.48 " "$246.78 " "$124.40 " "$0.00 "
0001-12-18 "$8.69 " "$0.00 " "$300.10 " "$156.59 " "$0.00 "
0001-12-18 "$58.64 " "$0.00 " "$271.58 " "$206.11 " "$0.00 "
0001-12-18 "$39.97 " "$22.47 " "$324.80 " "$164.35 " "$0.00 "
0001-12-18 "$79.96 " "$5.99 " "$292.75 " "$129.62 " "$0.00 "
0001-12-18 "$4.99 " "$0.00 " "$290.76 " "$139.89 " "$10.77 "
0001-12-18 "$20.68 " "$22.37 " "$228.75 " "$98.76 " "$0.00 "
0002-01-18 "$78.63 " "$10.47 " "$323.42 " "$137.10 " "$0.00 "
0002-02-18 "$49.75 " "$0.00 " "$391.12 " "$178.11 " "$0.00 "
0002-03-18 "$88.43 " "$34.95 " "$327.68 " "$174.81 " "$0.00 "
0002-04-18 "$125.38 " "$8.49 " "$291.98 " "$170.10 " "$3.99 "
0002-05-18 "$27.36 " "$6.99 " "$205.60 " "$124.69 " "$0.00 "
0002-06-18 "$9.98 " "$8.97 " "$224.33 " "$139.28 " "$0.00 "
COFFEE CRV DAIRY DELI.SANDWICH..and..FOOD ENERGY.DRINKS
0001-01-18 "$84.95 " "$44.47 " "$71.64 " "$5.98 " "$206.06 "
0001-02-18 "$57.69 " "$38.56 " "$60.60 " "$38.90 " "$252.61 "
0001-03-18 "$64.84 " "$40.25 " "$44.14 " "$10.97 " "$275.32 "
0001-04-18 "$73.40 " "$40.95 " "$49.13 " "$36.59 " "$252.25 "
0001-05-18 "$94.47 " "$45.00 " "$54.62 " "$27.92 " "$326.20 "
0001-06-18 "$43.56 " "$51.55 " "$40.48 " "$18.75 " "$393.68 "
0001-07-18 "$62.27 " "$40.30 " "$55.61 " "$21.94 " "$261.48 "
0001-08-18 "$65.24 " "$29.65 " "$41.86 " "$15.96 " "$211.71 "
0001-09-18 "$47.74 " "$27.05 " "$49.64 " "$20.94 " "$144.22 "
0001-10-18 "$80.35 " "$31.25 " "$23.72 " "$22.93 " "$235.94 "
0001-11-18 "$71.80 " "$30.00 " "$42.15 " "$43.68 " "$246.85 "
0001-12-18 "$66.04 " "$38.20 " "$53.31 " "$31.61 " "$276.58 "
0001-12-18 "$37.98 " "$60.85 " "$38.75 " "$6.77 " "$312.08 "
0001-12-18 "$56.88 " "$51.80 " "$30.68 " "$15.96 " "$304.08 "
0001-12-18 "$96.56 " "$30.95 " "$49.13 " "$18.95 " "$276.74 "
0001-12-18 "$61.46 " "$30.25 " "$29.08 " "$40.58 " "$240.22 "
0001-12-18 "$67.62 " "$34.85 " "$14.54 " "$26.72 " "$327.11 "
0001-12-18 "$75.78 " "$44.55 " "$17.83 " "$18.94 " "$269.86 "
0001-12-18 "$70.01 " "$43.10 " "$27.30 " "$9.67 " "$261.76 "
0001-12-18 "$87.83 " "$42.75 " "$10.85 " "$37.59 " "$331.76 "
0001-12-18 "$56.52 " "$42.35 " "$40.84 " "$26.92 " "$304.32 "
0001-12-18 "$56.71 " "$30.65 " "$8.86 " "$30.91 " "$276.56 "
0001-12-18 "$73.39 " "$35.55 " "$13.14 " "$6.98 " "$215.33 "
0001-12-18 "$80.95 " "$45.10 " "$21.02 " "$25.92 " "$303.60 "
0001-12-18 "$111.80 " "$36.50 " "$16.05 " "$22.74 " "$292.74 "
0001-12-18 "$107.60 " "$36.00 " "$29.98 " "$37.69 " "$286.49 "
0001-12-18 "$91.10 " "$46.76 " "$19.44 " "$38.89 " "$298.69 "
0001-12-18 "$70.43 " "$48.85 " "$35.09 " "$40.69 " "$282.18 "
0001-12-18 "$50.92 " "$37.80 " "$46.55 " "$16.35 " "$252.40 "
0001-12-18 "$39.78 " "$31.90 " "$47.25 " "$23.93 " "$218.74 "
0001-12-18 "$52.31 " "$30.80 " "$64.49 " "$19.94 " "$283.01 "
0002-01-18 "$78.16 " "$35.00 " "$38.86 " "$43.87 " "$174.82 "
0002-02-18 "$77.77 " "$52.80 " "$33.69 " "$42.87 " "$388.99 "
0002-03-18 "$64.44 " "$52.05 " "$42.14 " "$54.64 " "$317.47 "
0002-04-18 "$58.90 " "$52.90 " "$67.09 " "$15.76 " "$263.85 "
0002-05-18 "$61.46 " "$33.30 " "$50.65 " "$22.64 " "$238.95 "
0002-06-18 "$101.83 " "$34.90 " "$59.01 " "$17.95 " "$237.21 "
FOUNTAIN FROZEN.FOOD GENERAL.MERCHANDISE GIFTS..and..TOYS GROCERIES
0001-01-18 "$17.11 " "$28.30 " "$26.89 " "$23.26 " "$302.02 "
0001-02-18 "$15.02 " "$39.45 " "$23.79 " "$0.00 " "$234.11 "
0001-03-18 "$15.32 " "$24.62 " "$45.01 " "$19.99 " "$287.40 "
0001-04-18 "$14.92 " "$51.87 " "$9.81 " "$1.99 " "$322.09 "
0001-05-18 "$11.54 " "$46.60 " "$23.57 " "$0.00 " "$342.95 "
0001-06-18 "$36.31 " "$55.60 " "$87.55 " "$0.00 " "$283.13 "
0001-07-18 "$19.00 " "$29.88 " "$37.49 " "$0.00 " "$287.77 "
0001-08-18 "$19.20 " "$39.55 " "$34.28 " "$0.00 " "$177.29 "
0001-09-18 "$15.12 " "$14.03 " "$4.47 " "$0.00 " "$217.43 "
0001-10-18 "$16.61 " "$34.66 " "$17.14 " "$0.00 " "$149.36 "
0001-11-18 "$13.53 " "$37.48 " "$29.13 " "$0.00 " "$275.43 "
0001-12-18 "$18.60 " "$15.23 " "$27.12 " "$2.99 " "$274.72 "
0001-12-18 "$20.99 " "$38.02 " "$16.62 " "$0.00 " "$267.74 "
0001-12-18 "$26.36 " "$60.57 " "$44.77 " "$0.00 " "$289.71 "
0001-12-18 "$12.93 " "$15.23 " "$38.46 " "$0.00 " "$265.04 "
0001-12-18 "$18.40 " "$9.86 " "$22.19 " "$0.00 " "$273.38 "
0001-12-18 "$11.04 " "$20.43 " "$20.85 " "$0.00 " "$184.70 "
0001-12-18 "$30.24 " "$13.34 " "$27.12 " "$0.00 " "$332.36 "
0001-12-18 "$15.12 " "$28.40 " "$33.16 " "$0.00 " "$344.73 "
0001-12-18 "$13.43 " "$14.56 " "$33.67 " "$0.00 " "$227.71 "
0001-12-18 "$22.68 " "$19.51 " "$53.96 " "$1.09 " "$212.07 "
0001-12-18 "$21.39 " "$22.72 " "$51.29 " "$16.95 " "$272.56 "
0001-12-18 "$25.76 " "$28.20 " "$75.05 " "$0.00 " "$250.95 "
0001-12-18 "$11.34 " "$43.74 " "$31.17 " "$2.99 " "$252.91 "
0001-12-18 "$11.44 " "$49.94 " "$22.09 " "$22.44 " "$310.68 "
0001-12-18 "$13.53 " "$24.12 " "$46.82 " "$0.00 " "$313.64 "
0001-12-18 "$16.21 " "$27.50 " "$55.25 " "$0.00 " "$306.07 "
0001-12-18 "$21.19 " "$37.46 " "$40.86 " "$0.00 " "$244.37 "
0001-12-18 "$26.06 " "$44.19 " "$16.89 " "$19.95 " "$378.91 "
0001-12-18 "$20.99 " "$21.51 " "$21.56 " "$0.00 " "$247.66 "
0001-12-18 "$20.99 " "$10.05 " "$22.70 " "$0.00 " "$218.87 "
0002-01-18 "$11.34 " "$56.28 " "$17.18 " "$14.99 " "$270.19 "
0002-02-18 "$31.43 " "$19.82 " "$39.64 " "$2.18 " "$351.09 "
0002-03-18 "$17.41 " "$39.44 " "$88.56 " "$0.00 " "$283.61 "
0002-04-18 "$17.31 " "$30.78 " "$74.73 " "$16.95 " "$410.91 "
0002-05-18 "$9.05 " "$22.41 " "$16.51 " "$0.00 " "$280.97 "
0002-06-18 "$13.13 " "$13.36 " "$25.67 " "$0.00 " "$239.05 "
PASTRY PHONE.ACCES...and..ETC. PUBLICATION SNACKS SODAS
0001-01-18 "$62.96 " "$6.99 " "$1.50 " "$282.15 " "$128.43 "
0001-02-18 "$82.67 " "$13.98 " "$5.75 " "$223.22 " "$97.98 "
0001-03-18 "$63.28 " "$0.00 " "$1.50 " "$351.33 " "$146.24 "
0001-04-18 "$84.91 " "$13.98 " "$3.00 " "$284.90 " "$115.39 "
0001-05-18 "$74.26 " "$20.97 " "$3.00 " "$386.42 " "$107.99 "
0001-06-18 "$54.60 " "$6.99 " "$8.00 " "$384.08 " "$157.34 "
0001-07-18 "$110.33 " "$6.99 " "$0.00 " "$246.93 " "$106.56 "
0001-08-18 "$91.19 " "$20.97 " "$3.00 " "$204.66 " "$90.80 "
0001-09-18 "$56.70 " "$13.98 " "$1.50 " "$249.16 " "$109.81 "
0001-10-18 "$93.92 " "$0.00 " "$1.50 " "$221.80 " "$91.00 "
0001-11-18 "$65.65 " "$27.96 " "$4.50 " "$237.58 " "$94.46 "
0001-12-18 "$78.09 " "$6.99 " "$3.00 " "$288.99 " "$92.64 "
0001-12-18 "$44.28 " "$41.94 " "$8.75 " "$269.21 " "$154.99 "
0001-12-18 "$67.49 " "$20.97 " "$4.00 " "$339.23 " "$127.89 "
0001-12-18 "$88.45 " "$6.99 " "$0.00 " "$232.96 " "$84.22 "
0001-12-18 "$63.56 " "$20.97 " "$3.00 " "$228.63 " "$89.21 "
0001-12-18 "$82.58 " "$6.99 " "$1.50 " "$168.06 " "$71.69 "
0001-12-18 "$91.63 " "$4.99 " "$4.25 " "$281.65 " "$125.91 "
0001-12-18 "$99.97 " "$6.99 " "$4.50 " "$271.74 " "$119.06 "
0001-12-18 "$83.48 " "$55.92 " "$4.75 " "$276.45 " "$113.30 "
0001-12-18 "$115.52 " "$27.96 " "$7.00 " "$336.85 " "$116.38 "
0001-12-18 "$73.84 " "$33.95 " "$6.00 " "$236.32 " "$104.20 "
0001-12-18 "$99.56 " "$0.00 " "$3.00 " "$239.80 " "$84.79 "
0001-12-18 "$96.80 " "$6.99 " "$5.75 " "$253.55 " "$97.11 "
0001-12-18 "$104.27 " "$20.97 " "$1.50 " "$308.31 " "$75.60 "
0001-12-18 "$101.83 " "$20.97 " "$1.50 " "$277.60 " "$95.84 "
0001-12-18 "$74.81 " "$20.97 " "$5.50 " "$270.16 " "$111.58 "
0001-12-18 "$57.46 " "$0.00 " "$7.00 " "$233.27 " "$122.13 "
0001-12-18 "$71.99 " "$0.00 " "$10.00 " "$236.27 " "$104.47 "
0001-12-18 "$71.85 " "$13.98 " "$1.50 " "$239.16 " "$79.65 "
0001-12-18 "$79.01 " "$6.99 " "$3.00 " "$215.53 " "$100.33 "
0002-01-18 "$89.86 " "$20.97 " "$8.50 " "$235.64 " "$88.55 "
0002-02-18 "$99.89 " "$6.99 " "$7.25 " "$325.05 " "$103.64 "
0002-03-18 "$63.58 " "$62.91 " "$7.50 " "$312.00 " "$122.24 "
0002-04-18 "$67.97 " "$6.99 " "$4.00 " "$413.77 " "$150.57 "
0002-05-18 "$58.99 " "$13.98 " "$4.50 " "$162.49 " "$123.30 "
0002-06-18 "$117.48 " "$27.96 " "$2.75 " "$242.04 " "$88.11 "
TOBACCO TOTAL
0001-01-18 "$693.90 " "$3,034.01 "
0001-02-18 "$631.58 " "$2,693.91 "
0001-03-18 "$640.26 " "$2,964.32 "
0001-04-18 "$508.76 " "$2,822.79 "
0001-05-18 "$746.01 " "$3,578.02 "
0001-06-18 "$717.76 " "$3,687.26 "
0001-07-18 "$835.00 " "$3,240.98 "
0001-08-18 "$577.71 " "$2,445.43 "
0001-09-18 "$688.32 " "$2,327.65 "
0001-10-18 "$682.88 " "$2,429.34 "
0001-11-18 "$528.39 " "$2,555.98 "
0001-12-18 "$711.59 " "$2,918.13 "
0001-12-18 "$806.43 " "$3,457.97 "
0001-12-18 "$581.28 " "$3,298.37 "
0001-12-18 "$643.62 " "$2,654.73 "
0001-12-18 "$605.77 " "$2,478.83 "
0001-12-18 "$810.67 " "$2,598.24 "
0001-12-18 "$740.75 " "$3,145.54 "
0001-12-18 "$831.39 " "$3,200.32 "
0001-12-18 "$795.44 " "$3,184.47 "
0001-12-18 "$660.74 " "$3,123.97 "
0001-12-18 "$689.76 " "$2,793.73 "
0001-12-18 "$821.48 " "$2,949.56 "
0001-12-18 "$817.48 " "$3,148.15 "
0001-12-18 "$621.64 " "$2,976.00 "
0001-12-18 "$865.43 " "$3,226.49 "
0001-12-18 "$903.96 " "$3,632.32 "
0001-12-18 "$618.92 " "$3,033.83 "
0001-12-18 "$669.01 " "$2,901.41 "
0001-12-18 "$599.44 " "$2,422.37 "
0001-12-18 "$651.89 " "$2,563.22 "
0002-01-18 "$807.10 " "$2,981.84 "
0002-02-18 "$744.56 " "$3,586.62 "
0002-03-18 "$600.00 " "$3,576.79 "
0002-04-18 "$637.90 " "$3,647.41 "
0002-05-18 "$755.85 " "$2,676.75 "
0002-06-18 "$763.12 " "$2,749.23 "
[ reached getOption("max.print") -- omitted 233 rows ]
似乎还有多余的一排什么？但是我删除了一个空行，我认为这可能会导致输入不均，但这并不能解决。