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package ij.plugin;
import ij.*;
import ij.gui.GenericDialog;
import ij.process.*;
/** This plugin implements the Image>Stacks>Tools>Grouped Z Project command. */
public class GroupedZProjector implements PlugIn {
private static int method = ZProjector.AVG_METHOD;
private int groupSize;
public void run(String arg) {
ImagePlus imp = IJ.getImage();
int size = imp.getStackSize();
if (size==1) {
IJ.error("Z Project", "This command requires a stack");
return;
}
if (imp.isHyperStack()) {
new ZProjector().run("");
return;
}
if (!showDialog(imp)) return;
ImagePlus imp2 = groupZProject(imp, method, groupSize);
if (imp!=null) imp2.show();
}
public ImagePlus groupZProject(ImagePlus imp, int method, int groupSize) {
if (method<0 || method>=ZProjector.METHODS.length)
return null;
imp.setDimensions(1, groupSize, imp.getStackSize()/groupSize);
ZProjector zp = new ZProjector(imp);
zp.setMethod(method);
zp.setStartSlice(1);
zp.setStopSlice(groupSize);
zp.doHyperStackProjection(true);
return zp.getProjection();
}
boolean showDialog(ImagePlus imp) {
int size = imp.getStackSize();
GenericDialog gd = new GenericDialog("Z Project");
gd.addChoice("Projection method", ZProjector.METHODS, ZProjector.METHODS[method]);
gd.addNumericField("Group size:", size, 0);
gd.showDialog();
if (gd.wasCanceled()) return false;
method = gd.getNextChoiceIndex();
groupSize = (int)gd.getNextNumber();
if (groupSize<1 || groupSize>size || (size%groupSize)!=0) {
IJ.error("ZProject", "Group size must divide evenly into the stack size.");
return false;
}
return true;
}
}
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