I want to assign column names for a data table that I read from a file, but I get an error message that doesn't quite make sense to me. This is an excerpt from the data file:
HEADER SPOT GRID TOP LEFT BOT RIGHT ROW COL CH1I CH1B CH1AB CH2I CH2B CH2AB SPIX BGPIX EDGE RAT2 MRAT REGR CORR LFRAT CH1GTB1 CH2GTB1 CH1GTB2 CH2GTB2 CH1EDGEA CH2EDGEA FLAG CH1KSD CH1KSP CH2KSD CH2KSP
REMARK SOFTWARE ScanAlyze
REMARK SOFTVERS 2.30
REMARK CH1 IMAGE lc8n076_532 nm
REMARK CH2 IMAGE lc8n076_635 nm
REMARK GRID FILE ..\..\AshGrids\lc8n076_ar_finalflagged.SAG
REMARK DATE 8/28/99
REMARK TIME 9:12:58 AM
SPOT 1 1 79 48 96 65 1 1 187 174 183 115 101 104 225 990 0 1.077 0.6214 0.2045 0.3047 0.3411 0.5111 0.4978 0.1911 0.2089 0.006432 -0.00362 0 0.04242 8.898E-01 0.09556 6.597E-02
0...
Now, I read the header in first:
blood_title <- read.table("lc8n076rex2.DAT", header=FALSE, sep="\t", nrows=1)
And next, I use it as col.names to read the rest of the table, where I want to use the blood_title variable as column names:
blood_data <- read.table("lc8n076rex2.DAT", header=FALSE, skip=8, nrows=5, col.names="blood_name")
Unfortunately, I get an error message that I don't understand:
Error in read.table("lc8n076rex2.DAT", header = FALSE, skip = 8, nrows = 5, :
more columns than column names
Why is this error showing up? Both, the table and the column names in blood_title have consists of 34 columns:
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 V20 V21 V22 V23 V24 V25
1 HEADER SPOT GRID TOP LEFT BOT RIGHT ROW COL CH1I CH1B CH1AB CH2I CH2B CH2AB SPIX BGPIX EDGE RAT2 MRAT REGR CORR LFRAT CH1GTB1 CH2GTB1
V26 V27 V28 V29 V30 V31 V32 V33 V34
1 CH1GTB2 CH2GTB2 CH1EDGEA CH2EDGEA FLAG CH1KSD CH1KSP CH2KSD CH2KSP
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 V20 V21 V22 V23 V24 V25 V26
1 SPOT 1 1 79 48 96 65 1 1 187 174 183 115 101 104 225 990 0 1.0770 0.6214 0.2045 0.3047 0.34110 0.5111 0.4978 0.1911
2 SPOT 2 1 78 65 95 82 1 2 451 166 177 842 101 133 225 756 0 2.6000 2.1550 1.9440 0.7322 3.40300 0.7467 0.7467 0.5067
3 SPOT 3 1 78 83 95 100 1 3 727 171 187 12803 98 134 225 766 0 22.8500 20.1900 0.0000 0.0000 0.06008 0.7289 0.8711 0.5600
4 SPOT 4 1 78 100 95 117 1 4 1532 181 196 730 98 108 225 746 0 0.4678 0.4773 0.4028 0.8788 0.42010 0.7867 0.8000 0.6311
5 SPOT 5 1 78 118 95 135 1 5 4139 188 214 20358 105 159 225 746 0 5.1260 4.7240 0.0000 0.0000 5.58600 0.8533 0.9289 0.7156
V27 V28 V29 V30 V31 V32 V33 V34
1 0.2089 0.0064320 -3.620e-03 0 0.04242 8.898e-01 0.09556 6.597e-02
2 0.5689 -0.0007581 -2.205e-03 0 0.38510 3.391e-23 0.46000 6.426e-33
3 0.7600 -0.0164600 8.613e-06 0 0.44400 8.761e-31 0.65230 0.000e+00
4 0.6356 -0.0104900 6.777e-03 0 0.51220 1.389e-40 0.52090 5.747e-42
5 0.8356 -0.0209900 -9.983e-03 0 0.60900 0.000e+00 0.70760 0.000e+00
EDIT:
This is the complete code that I used in this particular order
> blood_title <- read.table("lc8n076rex2.DAT", header=FALSE, sep="\t", nrows=1)
> blood_data <- read.table("lc8n076rex2.DAT", header=FALSE, skip=8, nrows=5, col.names=unlist("blood_title"))
Error in read.table("lc8n076rex2.DAT", header = FALSE, skip = 8, nrows = 5, :
more columns than column names
> blood_title
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 V20 V21 V22 V23 V24 V25
1 HEADER SPOT GRID TOP LEFT BOT RIGHT ROW COL CH1I CH1B CH1AB CH2I CH2B CH2AB SPIX BGPIX EDGE RAT2 MRAT REGR CORR LFRAT CH1GTB1 CH2GTB1
V26 V27 V28 V29 V30 V31 V32 V33 V34
1 CH1GTB2 CH2GTB2 CH1EDGEA CH2EDGEA FLAG CH1KSD CH1KSP CH2KSD CH2KSP
> blood_data
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 V20 V21 V22 V23 V24 V25 V26
1 SPOT 1 1 79 48 96 65 1 1 187 174 183 115 101 104 225 990 0 1.0770 0.6214 0.2045 0.3047 0.34110 0.5111 0.4978 0.1911
2 SPOT 2 1 78 65 95 82 1 2 451 166 177 842 101 133 225 756 0 2.6000 2.1550 1.9440 0.7322 3.40300 0.7467 0.7467 0.5067
3 SPOT 3 1 78 83 95 100 1 3 727 171 187 12803 98 134 225 766 0 22.8500 20.1900 0.0000 0.0000 0.06008 0.7289 0.8711 0.5600
4 SPOT 4 1 78 100 95 117 1 4 1532 181 196 730 98 108 225 746 0 0.4678 0.4773 0.4028 0.8788 0.42010 0.7867 0.8000 0.6311
5 SPOT 5 1 78 118 95 135 1 5 4139 188 214 20358 105 159 225 746 0 5.1260 4.7240 0.0000 0.0000 5.58600 0.8533 0.9289 0.7156
V27 V28 V29 V30 V31 V32 V33 V34
1 0.2089 0.0064320 -3.620e-03 0 0.04242 8.898e-01 0.09556 6.597e-02
2 0.5689 -0.0007581 -2.205e-03 0 0.38510 3.391e-23 0.46000 6.426e-33
3 0.7600 -0.0164600 8.613e-06 0 0.44400 8.761e-31 0.65230 0.000e+00
4 0.6356 -0.0104900 6.777e-03 0 0.51220 1.389e-40 0.52090 5.747e-42
5 0.8356 -0.0209900 -9.983e-03 0 0.60900 0.000e+00 0.70760 0.000e+00
>
EDIT2:
Problem solved, forgot to unquote the variable blood_title