0.4.0 Calculation % Positive.groovy

import qupath.lib.gui.measure.ObservableMeasurementTableData
def ob = new ObservableMeasurementTableData();
ob.setImageData( getCurrentImageData(),  getAnnotationObjects() );

getAnnotationObjects().each{
    pos_pixel = ob.getNumericValue(it, "DAB: Positive area µm^2")
    total_pixel = ob.getNumericValue(it, "Area µm^2")
    
    perc_pos_pixel = pos_pixel/total_pixel*100
    it.getMeasurementList().putMeasurement("% Positive Pixel", perc_pos_pixel)
    print perc_pos_pixel
 }