How to add header to a dataset in R

Question

I need to read the   wdbc data  in the following data folder  http   archive ics uci edu ml machine-learning-databases breast-cancer-wisconsin   Doing this in R is easy using command read csv but as the header is missing how can I add it  I have the information but don t know how to do this and I d prefer do not edit the data file

User · Answer

You can also solve this problem by creating an array of values and assigning that array  newheaders  lt - c  quot a quot    quot b quot    quot c quot        quot x quot   colnames data   lt - newheaders

User · Answer

You can do the following   Load the data   test  lt - read csv             http   archive ics uci edu ml machine-learning-databases breast-cancer-wisconsin breast-cancer-wisconsin data             header FALSE    Note that the default value of the header argument for read csv is TRUE so in order to get all lines you need to set it to FALSE   Add names to the different columns in the data frame  names test   lt - c  A   B   C   D   E   F   G   H   I   J   K     or alternative and faster as I understand  not reloading the entire dataset    colnames test   lt - c  A   B   C   D   E   F   G   H   I   J   K

User · Answer

this should work out         kable dt    gt         kable styling  striped     gt         add header above c       1   Group 1    2   Group 2    2   Group 3    2    OR kable dt    gt     kable styling c  striped    bordered      gt     add header above c       Group 1    2   Group 2    2   Group 3    2     gt     add header above c       Group 4    4   Group 5    2     gt     add header above c       Group 6    6     for more you can check the link

User · Answer

You can also use colnames instead of names if you have data frame or matrix

User · Answer

in case you are interested in reading some data from a  txt file and only extract few columns of that file into a new  txt file with a customized header  the following code might be useful     input some data from 2 different  txt files  civit gps  lt - read csv file   path2 gpsFile csv  head TRUE sep      civit cam  lt - read csv file   path2 cameraFile txt  head TRUE sep         assign the name for the output file  seqName  lt -  seq1 data txt                                                                Extract data from imported files                                                              From Camera  frame idx  lt - civit cam X frame qx         lt - civit cam q x rad  qy         lt - civit cam q y rad  qz         lt - civit cam q z rad  qw         lt - civit cam q w    From GPS  gpsT       lt - civit gps X gpsTime sec  latitude   lt - civit gps Latitude deg  longitude  lt - civit gps Longitude deg  altitude   lt - civit gps H Ell m  heading    lt - civit gps Heading deg  pitch      lt - civit gps pitch deg  roll       lt - civit gps roll deg  gpsTime corr  lt - civit gps frame idx 1                                                                Export new data into the output txt file                                                            myData  lt - data frame c gpsTime corr                        c frame idx                        c qx                        c qy                        c qz                        c qw     Write   cat   GPSTime frameIdx qx qy qz qw n   file seqName  write table myData  file   seqName row names FALSE col names FALSE append TRUE sep          Of course  you should modify this sample script based on your own application

[r] How to add header to a dataset in R?

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