dap4/d4core/src/main/java/dap4/core/util/Index.java
public long
    index()
    {
        long offset = 0;
        for(int i = 0; i < this.indices.length; i++) {
            offset *= this.dimsizes[i];
            offset += this.indices[i];
        }
        return offset;
    }
public long
    index()
    {
        long offset = 0;
        for(int i = 0; i < this.indices.length; i++) {
            offset *= this.dimsizes[i];
            offset += this.indices[i];
        }
        return offset;
    }
Compute the linear index
from the current odometer indices.