(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.
- Download this
image, that is, figure 7 of paper 1 in full size. Save it
as fig1.jpg.
- Download this image, that is, figure 6 of paper 2
in full size. Save it as fig2.jpg.
- Open fig1.jpg in the Gimp.
- 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.
- 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:
- Leave this window open. Open fig2.jpg in a new window.
- 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:
- 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".
- Open the "Layers" dialogue (in the "Dialogs" menu).
- Go to the fig1.jpg window and do "Select->Select all" (Ctrl-A),
followed by "Edit->Copy" (ctrl-C).
- Go to the fig2.jpg window and do "Edit->Paste" (Ctrl-V).
- 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.
- 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.
- At the end of this exercise, you should have the GIF image
below:
UPDATE, June 28: I have removed the rest of this page.