Formatting Tables in Mathematica

Question

Ok, I created a table

Table[j, {i, 4}, {j, 3}] // TableForm

and the result is fine, from 1-4 in each column. Now, what if I wanted to extend this table into something that looks like this:

Table[{something, Table[{i, j}, {j, 1, 8, 1}]}, {i, 1, 4, 1}] // TableForm

only without that something written in the front of every row. I wrote it because I don't know Mathematica enough to do it any other way. But this second Table is what I want, I want it to look like that, without that "something". It is not a big problem, if I can't get rid of that but I would be happy to...

The other thing is, I want to export it to a .txt or .dat file that would not have all those {{soidn,soig},{ig,irg}} brackets inside.

How can I do that?

You should really take more care in formatting (and formulating) your questions. You can find some tips on using markdown to format your posts here. — dionys, Jul 21 '15 at 10:10
You really need to develop your basic Mathematica skills. I strongly recommend you study Power Programming with Mathematica by David B. Wagner. You can find out how to download it free by reading this question — m_goldberg, Jul 21 '15 at 12:11

score 1 · Accepted Answer · answered Jul 21 '15 at 11:55

What about this:

Table[{"    ", Table[{i, j}, {j, 1, 8, 1}]}, {i, 1, 4, 1}]

which has no "something", and you might also put it in the TableFormif needed. Alternatively you might make a Gridout of it:

 Grid[Table[{"    ", Table[{i, j}, {j, 1, 8, 1}]}, {i, 1, 4, 1}], 
 Dividers -> All]

yielding the following:

enter image description here

As to your second question, what about

    Table[{"", 
  Table[ToString[i] <> "," <> ToString[j], {j, 1, 8, 1}]}, {i, 1, 4, 
  1}]

(*   {{"", {"1,1", "1,2", "1,3", "1,4", "1,5", "1,6", "1,7", 
   "1,8"}}, {"", {"2,1", "2,2", "2,3", "2,4", "2,5", "2,6", "2,7", 
   "2,8"}}, {"", {"3,1", "3,2", "3,3", "3,4", "3,5", "3,6", "3,7", 
   "3,8"}}, {"", {"4,1", "4,2", "4,3", "4,4", "4,5", "4,6", "4,7", 
   "4,8"}}}   *)

??

Have fun!

score 1 · Answer 2 · answered Jul 21 '15 at 12:02

Perhaps something as simple as

Join[{something}, #] & /@ Table[{i, j}, {i, 4}, {j, 8}]

{{something, {1, 1}, {1, 2}, {1, 3}, {1, 4}, {1, 5}, {1, 6}, {1, 7}, {1, 8}}, 
 {something, {2, 1}, {2, 2}, {2, 3}, {2, 4}, {2, 5}, {2, 6}, {2, 7}, {2, 8}}, 
 {something, {3, 1}, {3, 2}, {3, 3}, {3, 4}, {3, 5}, {3, 6}, {3, 7}, {3, 8}}, 
 {something, {4, 1}, {4, 2}, {4, 3}, {4, 4}, {4, 5}, {4, 6}, {4, 7}, {4, 8}}}

score 1 · Answer 3 · answered Jul 21 '15 at 13:29

1

TableForm[Table[{i, j}, {i, 4}, {j, 8}], TableDirections -> {Column, Column, Row}]

Mathematica graphics

or

Flatten[Table[{i, j}, {i, 4}, {j, 8}], 1] // TableForm

Mathematica graphics

Exporting:

Export["filename.csv", Flatten[Table[{i, j}, {i, 4}, {j, 8}], 1]]

answered Jul 21 '15 at 13:29

Sjoerd C. de Vries

65,815
14
188
323

Formatting Tables in Mathematica

3 Answers3