class_docstr: Compute the various metrics for the Ichimoku Kinko Hyo (Ichimoku Cloud).
  http://stockcharts.com/school/doku.php?id=chart_school:technical_indicators:ichimoku_cloud
  
  **Default Inputs:** :data:`zipline.pipeline.data.EquityPricing.high`,                         :data:`zipline.pipeline.data.EquityPricing.low`,                         :data:`zipline.pipeline.data.EquityPricing.close`
  
  **Default Window Length:** 52
  
  Parameters
  ----------
  window_length : int > 0
      The length the the window for the senkou span b.
  tenkan_sen_length : int >= 0, <= window_length
      The length of the window for the tenkan-sen.
  kijun_sen_length : int >= 0, <= window_length
      The length of the window for the kijou-sen.
  chikou_span_length : int >= 0, <= window_length
      The lag for the chikou span.
code: def compute(
      self,
      today,
      assets,
      out,
      high,
      low,
      close,
      tenkan_sen_length,
      kijun_sen_length,
      chikou_span_length,
  ):
      out.tenkan_sen = tenkan_sen = (
          high[-tenkan_sen_length:].max(axis=0)
          + low[-tenkan_sen_length:].min(axis=0)
      ) / 2
      out.kijun_sen = kijun_sen = (
          high[-kijun_sen_length:].max(axis=0)
          + low[-kijun_sen_length:].min(axis=0)
      ) / 2
      out.senkou_span_a = (tenkan_sen + kijun_sen) / 2
      out.senkou_span_b = (high.max(axis=0) + low.min(axis=0)) / 2
      out.chikou_span = close[chikou_span_length]
  
imports: from __future__ import division
  from numpy import abs, average, clip, diff, dstack, inf
  from numexpr import evaluate
  from zipline.pipeline.data import EquityPricing
  from zipline.pipeline.factors import CustomFactor
  from zipline.pipeline.mixins import SingleInputMixin
  from zipline.utils.input_validation import expect_bounded
  from zipline.utils.math_utils import nanargmax, nanargmin, nanmax, nanmean, nanstd, nanmin
  from zipline.utils.numpy_utils import rolling_window
  from .basic import exponential_weights
  from .basic import LinearWeightedMovingAverage, MaxDrawdown, SimpleMovingAverage, VWAP, WeightedAverageValue
label_desc: Use image node_id 2 for calling the IchimokuKinkoHyo obj's underlying member method code with example usage: obj.compute(today, assets, out, high, low, close, tenkan_sen_length, kijun_sen_length, chikou_span_length) without return types