Remove_Multipoint_Based_on_ROI

//Delete Multi-Points based on ROI Selection
//Created by Johnny Gan June 2021 behappyftw@g.ucla.edu
//Import/Make multipoint selection. Run MAcro. Create a ROI. Macro will clear all multipoints outside the ROI.

setOption("ExpandableArrays", true);
Roi.getCoordinates(xpoints, ypoints);
Overlay.addSelection("red");
Overlay.show;
run("Select None");
setTool("rectangle");
waitForUser("Select Region That you care about. Then press OK");
good_x = newArray;
good_y = newArray;
count = 0;
for (i = 0; i < xpoints.length; i++) {
	if (Roi.contains(xpoints[i], ypoints[i])) {
		good_x[count]=xpoints[i];
		good_y[count]=ypoints[i];
		count+=1;
	}
}
makeSelection("point",good_x,good_y);
Overlay.remove;