LaTeX Table View
A very simple table editor is included in TeXlipse, and it can be activated
  from Window > Show View > Other > Texlipse > LaTeX Table View.
Even though (La)TeX is a very good typesetting system (editing text is easy),
  editing and modifying LaTeX tables is a bit cumbersome (for instance, adding
  a column in the middle of a large table is very tedious). The purpose of the
  LaTeX Table View is to make table editing a bit easier.
Using the LaTeX Table View
Once a cell has been chosen to be edited, you can navigate trough the
  cells pressing ctrl + ARROW_KEYs. Right clicking the view gives a popup menu
  with the following operations:
  
    - Insert row (before)
- Delete row
- Clear all rows
- Move row up
- Move row down
- Duplicate row
- Import selected lines from editor
      Select the data lines from the editor (for instance,
        the lines between \begin{tabular}{...}and\end{tabular}). The lines are
        inserted at (and after) the selected line in the editor —
        new rows are generated if necessary (no rows are overwritten).
 Comments are not imported, i.e. everything after % on a line
        is ignored, as well as
        horizontal line commands (\.*line.*) are ignored.
       
- Export to Clipboard
      The entire contents of the table editor is copied to the clipboard,
        from which it can be pasted into the document. A few notes about
        exporting: 
         - Empty rows are not exported
- Empty cells are not exported, except those that are
				preceding data cells.
 To treat a cell as a real empty cell, insert & to it.
 
- Raw Export
      The entire contents of the table editor is copied to the clipboard
        in a raw text format suitable for use in e.g. Gnuplot. The data is
		separated by tabs and rows by linefeeds. Otherwise, it works like
		Export to Clipboard above.
         
A few examples:
      
      
      
      | 
        | \multicolumn{2}{c}{1 and 2} |  | 3 |  | a | b | c |  | exports as | 
        | \multicolumn{2}{c}{1 and 2} & 3 \\ |  | a & b & c \\ |  | . | 
      
      
    Flip rows and columns, example:
      
    
    Mirror columns, example:
      
      
    Mirror rows, example:
            
  
Tips
-  You can modify columns by first flipping rows and columns and
  then adding/deleting/inserting rows. After you are ready, then flip
  the rows and columns again.
 
-  Use CTRL+KEYPAD_8,_2,_4 and _4 (with numlock on) to calculate
  the sum of all cells in the same row/column, starting from
  the cell next to the current. If the cell is not a number,
  it is ignored. Examples:
 
 - 
    - 
    |  | CTRL+KEYPAD_4 |  | and |  - 
    |  | CTRL+KEYPAD_6 |  |