docstr: The Number of Misclassified categories over non-missing categorical entries, or None if not present.
docstr_tok: ["The","Number","of","Misclassified","categories","over","non-missing","categorical","entries",",","or","None","if","not","present","."]
code: def cat_err(self):
      """The Number of Misclassified categories over non-missing categorical entries, or None if not present."""
      if MetricsBase._has(self._metric_json, "caterr"):
          return self._metric_json["caterr"]
      return None
  
imports: from h2o.model import MetricsBase
label_desc: Use image node_id 3 for calling the H2ODimReductionModelMetrics obj's underlying member method code with example usage: obj.cat_err() and returns: None, self