dap4/d4core/src/main/java/dap4/core/util/Slice.java
public long
    getCount()
    {
        assert this.first != UNDEFINED && this.stride != UNDEFINED && this.stop != UNDEFINED;
        long count = (this.stop) - this.first;
        count = (count + this.stride - 1);
        count /= this.stride;
        return count;
    }
public long
    getCount()
    {
        assert this.first != UNDEFINED && this.stride != UNDEFINED && this.stop != UNDEFINED;
        long count = (this.stop) - this.first;
        count = (count + this.stride - 1);
        count /= this.stride;
        return count;
    }
Compute the number of elements in
the slice. Note that this is different from
getStop() because stride is taken into account.