(Note: this page is a subtopic of this one. If you haven't read that page and are unfamiliar with the issue, read it first.)

Of the seven points made on page 2 of this report, point 6 is perhaps the most interesting. It consists of two strips in this paper that have, apparently, been copied into this paper as a single unit -- with the intervening axis (and surrounding text) relabelled.

Here I describe exactly how I produced the alignment. It took trial and error, but no specialised programs. The instructions apply to The Gimp, but you can do the same thing in Adobe Photoshop or other image-manipulation programs; and no manipulation, except scaling, is required.

  1. Download this image, that is, figure 7 of paper 1 in full size. Save it as fig1.jpg.
  2. Download this image, that is, figure 6 of paper 2 in full size. Save it as fig2.jpg.
  3. Open fig1.jpg in the Gimp.
  4. Select the "crop" tool, and click on the image. A dialogue box will open; focus on that and don't bother to select any region.
  5. In the dialogue box, enter 631 for the "Origin X" field, 493 for "Origin Y", 325 for "Width", and 211 for "Height". Click the "Crop" button. You should now have this:
  6. Leave this window open. Open fig2.jpg in a new window.
  7. Select the "crop" tool and click on fig2.jpg. In the dialogue box that opens, enter respectively 131, 49, 231 and 150 in the "Origin X", "Origin Y", "Width" and "Height" fields. Click the "Crop" button. You should now have this:
  8. Go to "Scale image" (in the "Image" menu). Enter 325 for "Width", 211 for "Height" (this should happen automatically, since the aspect ratio is being preserved), and click on "Scale".
  9. Open the "Layers" dialogue (in the "Dialogs" menu).
  10. Go to the fig1.jpg window and do "Select->Select all" (Ctrl-A), followed by "Edit->Copy" (ctrl-C).
  11. Go to the fig2.jpg window and do "Edit->Paste" (Ctrl-V).
  12. Go to the "Layers" dialogue; the top layer should be "Floating selection". Click on the "New layer" button (bottom-left) and the "floating selection" should get pasted in the new layer. By clicking on the eye icon (leftmost icon in each layer), you can hide that layer; or by sliding the "Opacity" slider, you can make the top layer transparent, to compare the two images.
  13. Go to "File"->"Save as", and choose the "GIF" file format. You will get a dialogue saying GIF can't handle layers; choose "Convert to animation". In the animation options in the next dialogue, choose a suitable waiting time for cycling between the images.
  14. At the end of this exercise, you should have the GIF image below:

UPDATE, June 28: I have removed the rest of this page.