CODEWITHSUNDEEP
wolfram-mathematica
C. E.
C. E.

Reputation: 10607

How to export Mathematica data in columns

I'm very new to Mathematica. I want to use it as a data source for gnuplot (I know Mathematica can plot too), it uses a file format with data in columns and a space between each column on each row. Like this:

x y
1 123
2 234
4 456

etc.

I've come as far as to create this expression:

{CountryData["G8"], CountryData[#, "GDP"] & /@ CountryData["G8"]} // Transpose // Grid

This creates a table just like I want it. Now, how can I export this to a file not as matrix but as a table like it appears in Mathematica?

Upvotes: 3

Views: 10074

Answers (2)

Sjoerd C. de Vries
Sjoerd C. de Vries

Reputation: 16232

Your CountryData usage can be streamlined a bit using the map operator /@: 

{#, CountryData[#, "GDP"]} & /@ CountryData["G8"],

Combining this with Export you get this:

Export[
  "C:\\Users\\Sjoerd\\Desktop\\tabel.txt", 
  {#, CountryData[#, "GDP"]} & /@ CountryData["G8"], 
  "Table", 
 "FieldSeparators" -> " "
]

Replace the above file path with something appropriate for your situation.

Upvotes: 5

Verbeia
Verbeia

Reputation: 4420

Mathematica supports a wide range of Export formats. Something like Export["mytable.csv",nameofexpression] should do the trick, Export["file.dat",nameofexpression,"Table"] for space /tab delimited.

This tutorial should help.

Upvotes: 4

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