ram_xlabel = &#39;source redshift&#39;.</span>
<span class="sd">    param_ylabel : `str`</span>
<span class="sd">        y-axis label.</span>
<span class="sd">        default param_ylabel = &#39;probability density&#39;.</span>
<span class="sd">    param_min : `float`</span>
<span class="sd">        minimum value of the parameter.</span>
<span class="sd">        default param_min = None.</span>
<span class="sd">    param_max : `float`</span>
<span class="sd">        maximum value of the parameter.</span>
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