Module ij

Class LineGraphAnalyzer

  • All Implemented Interfaces:
    Measurements, PlugInFilter

    public class LineGraphAnalyzer
    extends Object
    implements PlugInFilter, Measurements
    Implements ImageJ's Analyze/Tools/Analyze Line Graph command. 2022-07-19 Michael Schmid: New implementation, tries to follow the curves. Plots (and lists) different curves as separate data sets. Works on all image types (for RGB, uses gray value and threshold at 127.5)
    • Constructor Detail

      • LineGraphAnalyzer

        public LineGraphAnalyzer()
    • Method Detail

      • setup

        public int setup​(String arg,
                         ImagePlus imp)
        Description copied from interface: PlugInFilter
        This method is called once when the filter is loaded. 'arg', which may be blank, is the argument specified for this plugin in IJ_Props.txt or in the plugins.config file of a jar archive containing the plugin. 'imp' is the currently active image. This method should return a flag word that specifies the filters capabilities.

        For Plugin-filters specifying the PlugInFilter.FINAL_PROCESSING flag, the setup method will be called again, this time with arg = "final" after all other processing is done.

        Specified by:
        setup in interface PlugInFilter
      • run

        public void run​(ImageProcessor ip)
        Description copied from interface: PlugInFilter
        Filters use this method to process the image. If the PlugInFilter.DOES_STACKS flag was set, it is called for each slice in a stack. With PlugInFilter.CONVERT_TO_FLOAT, the filter is called with the image data converted to a FloatProcessor (3 times per image for RGB images). ImageJ will lock the image before calling this method and unlock it when the filter is finished. For PlugInFilters specifying the PlugInFilter.NO_IMAGE_REQUIRED flag and not the PlugInFilter.DONE flag, run(ip) is called once with the argument null. Use ip.getSliceNumber() to get the stack position (1-n).
        Specified by:
        run in interface PlugInFilter
      • analyze

        public void analyze​(ImagePlus imp)
        Uses extracts a set of coordinate pairs from a digitized line graph. Assumes the graph is thresholded or dark on white. Only analyzes pixels inside the ROI