Why does scale within the Georeferencing toolbar bounced like jumping and return re-center ?

DEAF_PROBERT_68

Why in the world whenever I use the scale to zoom in or out bounced another area ? Is there a reason for that ?  What I am saying here is that whenever I use that scale and let it go my mouse it would bounced to the right or to the left in the center of the screen ?

This is an annoying !

Any tips ?

CharlottePeters95540

Robert,

My guess is that when the image is scaled, the result is being centered in the middle of the data view because there is no control point available to anchor it in place. It almost acts like a graphic until the georeferencing information is written to the image. I haven't seen a setting that will change this behavior.

It may be less frustrating to scale the image using control points as suggested in this forum.

In short:

1. Open the link table
2. Uncheck 'Auto Adjust' and Select 'zero order polynomial' transformation from the Georeferencing pulldown
3. Create your 1st link (acts as the anchor) to shift the image to the location you want it and select 'Update Display' in the Georeferencing dropdown
   1. If the image is already in the correct location then stack the starting and ending control point on top of each other so it's "anchored" before the next link is created
4. Change the transformation to '1st order polynomial' and create a 2nd link. The 2nd link will act as the scaling factor.
5. Select 'Update Display' to "scale" the image

This method works best if the 1st and 2nd link are positioned at the opposite ends of the image otherwise rotation may occur.