Hello @lspen,
imshow doesnt have selections, because you cannot select on the graph. However, you can access clickData, which through a clientside_callback and a dcc.Store you could build it if you really needed to compile your selections. 
Hello @lspen,
imshow doesnt have selections, because you cannot select on the graph. However, you can access clickData, which through a clientside_callback and a dcc.Store you could build it if you really needed to compile your selections.