Changed the zoom function in the DropPlot app so that the zoom annotation is removed and released when not in use and the zoom rectangle is constrained to the plot area.
Changed the zoom function in the DropPlot app so that the zoom annotation is removed and released when not in use and the zoom rectangle is constrained to the plot area.

sureshdustrise/core-plot,eoinnorris/core-plot,eoinnorris/core-plot,LiDechao/core-plot,eoinnorris/core-plot,sureshdustrise/core-plot,zenXian/core-plot,tectronics/core-plot,divyavamsee/core-plot,tectronics/core-plot,LiDechao/core-plot,kamalvenkat/core-plot,divyavamsee/core-plot,LiDechao/core-plot,tectronics/core-plot,kamalvenkat/core-plot,LiDechao/core-plot,sureshdustrise/core-plot,tectronics/core-plot,eoinnorris/core-plot,zenXian/core-plot,kamalvenkat/core-plot,zenXian/core-plot,zenXian/core-plot,divyavamsee/core-plot,kamalvenkat/core-plot,sureshdustrise/core-plot,divyavamsee/core-plot