aglo

Animation to compare two data sets
 

The human eye is extremely good at detecting subtle patterns, and similarities or changes in patterns. Astronomers use visual (or automated) "blink" techniques to find new stellar objects. This page implements a similar idea for comparing several geophysical data sets using a JavaScript animator.

Select the two images you want to compare from the two drop-down lists. All images are shown below to help you identify appropriate filenames.

The speed of the flickering animation can be adjusted by setting the number of frames (changes) per second in the box labelled "step".
 
Step: (frames per second)

Image 1:

Image 2:

Finally, all plots are shown below as thumbnail images (except the surface elevation "elevns.gif"), for more direct comparison, and to help identify file names.

em31a-ew.gif
EM-31 app-cond.
EW instrum.
em31a-ns.gif
EM-31 app-cond.
NS instrum.
em31a-avg.gif
EM-31 app-cond.
Averaged
em31a-dif.gif
EM-31 app-cond.
Differenced.
em31ip-ew.gif
EM-31 in-phase.
EW instrum.
em31ip-ns.gif
EM-31 in-phase.
NS instrum.
em31ip-avg.gif
EM-31 in-phase.
Averaged.
em31ip-diff.gif
EM-31 in-phase.
Differenced.
mag-rainbow.gif
mag-bw.gif
mag-bluered.gif
|
Three figures to the left
show identical gradient
magnetics data.