From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Subject: Re: working with tables can be quite painful...
Date: Thu, 22 Sep 2016 21:52:59 +0200
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In-Reply-To: <87zin4z3u3.fsf@ucl.ac.uk> (Eric S. Fraga's message of "Mon, 19
	Sep 2016 09:33:24 +0100")
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Hello,

Eric S Fraga <e.fraga@ucl.ac.uk> writes:

> I cannot send the actual table I am working on as it relates to grades
> for students.  I will try to create a similar table with random
> entries.

You could also try the imperfect (make sure to eyeball the result):

  (defun scramble-contents ()
    (interactive)
    (let ((tree (org-element-parse-buffer)))
      (org-element-map tree '(code comment comment-block example-block fixed-width
                                   keyword link node-property plain-text verbatim)
        (lambda (obj)
          (cl-case (org-element-type obj)
            ((code comment comment-block example-block fixed-width keyword
                   node-property verbatim)
             (let ((value (org-element-property :value obj)))
               (org-element-put-property
                obj :value (replace-regexp-in-string "[[:alnum:]]" "x" value))))
            (link
             (unless (string= (org-element-property :type obj) "radio")
               (org-element-put-property obj :raw-link "http://orgmode.org")))
            (plain-text
             (org-element-set-element
              obj (replace-regexp-in-string "[[:alnum:]]" "x" obj)))))
        nil nil nil t)
      (let ((buffer (get-buffer-create "*Scrambled text*")))
        (with-current-buffer buffer
          (insert (org-element-interpret-data tree))
          (goto-char (point-min)))
        (switch-to-buffer buffer))))

Regards,

-- 
Nicolas Goaziou