My understanding is that you would like to reposition a text label along with its corresponding arrow if two text labels overlap in your scatter plot.
You can use the "textarrow" annotation type in MATLAB to draw an arrow with an associated text label to each point in your scatter plot.
Refer to the documentation pages below for additional information regarding the usage and available properties of the "textarrow" annotation type:
You can interactively draw and position "textarrow" annotations in a scatter plot by using the Plot Tools, and selecting Insert>Text Arrow from the figure window's menu bar.
For additional information regarding the Plot Tools, refer to the documentation page linked below:
