I'm trying to take a dataset that looks like this:
And transform the records into this format:
The resulting format would have two columns, one for the old column names and one column for the values. If there are 10,000 rows then there should be 10,000 groups of data in the new format.
I'm open to all different methods, excel formulas, sql (mysql), or straight ruby code would work for me also. What is the best way to tackle this problem?
You could add an ID column to the left of your data and use a Reverse PivotTable method.
Press Alt+D+P to access the Pivottable Wizard with the steps:
1. Multiple Consolidation Ranges 2a. I will create the page fields 2b. Range: eg. sheet1!A1:A4 How Many Page Fields: 0 3. Existing Worksheet: H1
In the PivotTable:
Uncheck Row and Column from the Field List Double-Click the Grand Total as shown
Just for fun:
# Input file format is tab separated values
# name search_term address code
# Jim jim jim_address 123
# Bob bob bob_address 124
# Lisa lisa lisa_address 126
# Mona mona mona_address 129
infile = File.open("inputfile.tsv")
headers = infile.readline.strip.split("\t")
puts headers.inspect
of = File.new("outputfile.tsv","w")
infile.each_line do |line|
row = line.split("\t")
headers.each_with_index do |key, index|
of.puts "#{key}\t#{row[index]}"
end
end
of.close
# A nicer way, on my machine it does 1.6M rows in about 17 sec
File.open("inputfile.tsv") do | in_file |
headers = in_file.readline.strip.split("\t")
File.open("outputfile.tsv","w") do | out_file |
in_file.each_line do | line |
row = line.split("\t")
headers.each_with_index do | key, index |
out_file << key << "\t" << row[index]
end
end
end
end
destination = File.open(dir, 'a') do |d| #choose the destination file and open it
source = File.open(dir , 'r+') do |s| #choose the source file and open it
headers = s.readline.strip.split("\t") #grab the first row of the source file to use as headers
s.each do |line| #interate over each line from the source
currentLine = line.strip.split("\t") #create an array from the current line
count = 0 #track the count of each array index
currentLine.each do |c| #iterate over each cell of the currentline
finalNewLine = '"' + "#{headers[count]}" + '"' + "\t" + '"' + "#{currentLine[count]}" + '"' + "\n" #build each new line as one big string
d.write(finalNewLine) #write final line to the destination file.
count += 1 #increment the count to work on the next cell in the line
end
end
end
end
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