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ModularImageAnalysis (MIA) is an ImageJ plugin which provides a modular framework for assembling image and object analysis workflows. Detected objects can be transformed, filtered, measured and related. Analysis workflows are batch-enabled by default, allowing easy processing of high-content datasets.

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package io.github.mianalysis.mia.process.analysis;

import java.util.TreeMap;

/**
 * Created by sc13967 on 18/04/2018.
 */
public class InstantaneousVelocityCalculator {
    public TreeMap calculate(int[] f, double[] x) {
        TreeMap velocity = new TreeMap<>();

        velocity.put(f[0],0d);
        for (int i = 1; i < x.length; i++) {
            double currentVelocity = (x[i] - x[i - 1])/(f[i] - f[i - 1]);
            velocity.put(f[i],currentVelocity);

        }

        return velocity;

    }
}