Question Image moving too far

Hello and thank you so much for reading! I'm coding a store scene where I allow players to purchase different kinds of "platforms" to jump on. I have a right arrow which on press should move the next purchase item to the center of the screen.
As you can see in the image, there's a "Pack" called Kerrvillian which should move to the left at the same time as the Americano moves left off the screen. I have code that looks like this:

Code (CSharp):

1. Debug.Log("moving left");
2.            
3.             Vector3 pos2 = Pack2.GetComponent<RectTransform>().position;
4.             Vector3 pos1 = Pack1.GetComponent<RectTransform>().position;
5.             Debug.Log(pos2.x);
6.             if (pos2.x < 0)
7.             {
8.                 Pack2.GetComponent<RectTransform>().position = new Vector3(0, pos2.y, 0);
9.                 isClickable = true;
10.                 currentWindow = 2;
11.             }
12.             else if (pos2.x > 0)
13.             {  
14.                 pos2.x -= windowChangeSpeed;
15.                 pos1.x -= windowChangeSpeed;
16.                 Pack2.GetComponent<RectTransform>().position = pos2;
17.                 Pack1.GetComponent<RectTransform>().position = pos1;
18.             }

When I manually set the Pos X to 0, everything looks proper. However, when I run the script, the Kerrvillian platform keeps moving left after it hits 0, all the way to -540.

Why is it doing this? I need the "KErrvillian PAck" to stop at 0 but it doesn't. Please help me!

 

Also, in the console as you can see in the image, a posX of 0 is showing. However, in the inspector -540 is showing. I'm still rather new to Unity so maybe I'm missing something obvious?

 

I believe I solved my problem by using RectTransform.anchoredPosition instead of RectTransform.position. I found that solution through Google and this thread: https://forum.unity.com/threads/change-position-ui-image-in-canvas.586324/
However, I don't understand what the anchoredPosition is, I'm just using it. Could anyone explain what anchoredPosition is? Thank you

 

Good luck with that. I still don't fully understand RectTransforms.

For instance, the simple act of placing the anchors at the corner of the RectTransform, something you might intuit would be easy, is insanely complex. Check it:

http://forum.unity3d.com/threads/sc...hor-to-gui-object-size-rect-transform.269690/

Note how many "Oh it doesn't quite work right, here's my fixes" versions got posted.

CRAZY.