class_docstr: Mean DC shift analyzer
class_docstr_tok: ["Mean","DC","shift","analyzer"]
code: def unit():
      return "%"
  
file_path: TimeSide/timeside/plugins/analyzer/dc.py
imports: from timeside.core import implements, interfacedoc
  from timeside.core.analyzer import Analyzer
  from timeside.core.api import IValueAnalyzer
  import numpy
label_desc: Use image node_id 5 for calling the MeanDCShift obj's underlying member method code with example usage: obj.unit() and returns: str