Update documentation

_modules/kerchunk/combine.html

@@ -236,7 +236,7 @@ <h1>Source code for kerchunk.combine</h1><div class="highlight"><pre>
             <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Values being mapped cannot also be identical&quot;</span><span class="p">)</span>
         <span class="bp">self</span><span class="o">.</span><span class="n">preprocess</span> <span class="o">=</span> <span class="n">preprocess</span>
         <span class="bp">self</span><span class="o">.</span><span class="n">postprocess</span> <span class="o">=</span> <span class="n">postprocess</span>
-        <span class="bp">self</span><span class="o">.</span><span class="n">out</span> <span class="o">=</span> <span class="n">out</span> <span class="ow">or</span> <span class="p">{}</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">out</span> <span class="o">=</span> <span class="n">out</span> <span class="k">if</span> <span class="n">out</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="k">else</span> <span class="p">{}</span>
         <span class="bp">self</span><span class="o">.</span><span class="n">coos</span> <span class="o">=</span> <span class="kc">None</span>
         <span class="bp">self</span><span class="o">.</span><span class="n">done</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span></div>
 
@@ -480,7 +480,9 @@ <h1>Source code for kerchunk.combine</h1><div class="highlight"><pre>
 <span class="w">        </span><span class="sd">&quot;&quot;&quot;</span>
 <span class="sd">        Write coordinate arrays into the output</span>
 <span class="sd">        &quot;&quot;&quot;</span>
-        <span class="n">group</span> <span class="o">=</span> <span class="n">zarr</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">out</span><span class="p">)</span>
+        <span class="n">kv</span> <span class="o">=</span> <span class="p">{}</span>
+        <span class="n">store</span> <span class="o">=</span> <span class="n">zarr</span><span class="o">.</span><span class="n">storage</span><span class="o">.</span><span class="n">KVStore</span><span class="p">(</span><span class="n">kv</span><span class="p">)</span>
+        <span class="n">group</span> <span class="o">=</span> <span class="n">zarr</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="n">store</span><span class="p">)</span>
         <span class="n">m</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">fss</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">get_mapper</span><span class="p">(</span><span class="s2">&quot;&quot;</span><span class="p">)</span>
         <span class="n">z</span> <span class="o">=</span> <span class="n">zarr</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="n">m</span><span class="p">)</span>
         <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">coos</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
@@ -532,6 +534,7 @@ <h1>Source code for kerchunk.combine</h1><div class="highlight"><pre>
                 <span class="k">else</span><span class="p">:</span>
                     <span class="n">arr</span><span class="o">.</span><span class="n">attrs</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cf_units</span><span class="p">[</span><span class="n">k</span><span class="p">])</span>
             <span class="c1"># TODO: rewrite .zarray/.zattrs with ujson to save space. Maybe make them by hand anyway.</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">out</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">kv</span><span class="p">)</span>
         <span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">&quot;Written coordinates&quot;</span><span class="p">)</span>
         <span class="k">for</span> <span class="n">fn</span> <span class="ow">in</span> <span class="p">[</span><span class="s2">&quot;.zgroup&quot;</span><span class="p">,</span> <span class="s2">&quot;.zattrs&quot;</span><span class="p">]:</span>
             <span class="c1"># top-level group attributes from first input</span>