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 ?

[DanPatterson_Retired]

Quick ways to navigate data frames and layouts—Help | ArcGIS for Desktop

I think it is some combination of what you are doing, since you say it happens when you release the mouse...which on a click event, recenters the dataframe...see if you can get some combo of shift and the tool so that it doesnt recenter

[DEAF_PROBERT_68]

Dan Patterson​  Ok I'll try on that one. Thanks.

[DEAF_PROBERT_68]

Ok, so here is the video I screencasted it..you will know what I am talking about here.

I tried to upload it here with the Insert video and seems it is not working...the file is .mov  any suggest for me for the next time. So, this time I am attaching the video.

[DanPatterson_Retired]

I will check when I get on a windows machine...these iThingies are being less than cooperative. I use Snagit and/or Camtasia on PC's

[CharlottePeters · Accepted solution]

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.

[DEAF_PROBERT_68]

I have used them what you describe them but my only one simple question is why does it jumping it around as it should not be ? Know what i mean. Don't know if this is a bug or not...maybe ESRI should take a notice of it.

Thanks Charlotte !

[DanPatterson_Retired]

Robert... I think Charlotte's description is by design.  Perhaps to enable an individual to examine the effect of the addition of subsequent control points.  I think what you want is for the whole thing to stay static until you tell it otherwise, like with an update button/option.  Perhaps, it could be a suggestion to the upcoming new ArcGIS Ideas (here is the announcement ArcGIS Ideas coming to GeoNet  ).  Video documentation will go a long way to explain the situation, since capturing the essence in text just doesn't cut it sometimes.