e first-constructor
                                 (gtol/reduced-dims-&gt;constructor-args reduced-dims)))
#'user/idx-obj
</code></pre>
<p>And what did we get back?</p>
<pre><code class="language-clojure">user&gt; (instance? tech.v2.datatype.LongReader idx-obj)
true
user&gt; (count idx-obj)
262144
user&gt; ;;The image was 256x256x4
user&gt; (* 256 256 4)
262144
user&gt; ;;Due to striding, there is a discontinuity at index 1024
user&gt; (map idx-obj (range 1020 1030))
(1020 1021 1022 1023 8192 8193 8194 81