Class: CMORizer::Step::AUTO_DOWNSAMPLE_FREQUENCY

Inherits:
BaseStep
  • Object
show all
Defined in:
lib/step.rb

Instance Attribute Summary

Attributes inherited from BaseStep

#forbid_inplace, #initial_prefix, #needs_to_run, #resultpath

Instance Method Summary collapse

Methods inherited from BaseStep

#add_input, #create_outpath, #initialize, #set_info, #truncate_string

Constructor Details

This class inherits a constructor from CMORizer::Step::BaseStep

Instance Method Details

#can_process?(number_of_eventual_input_years) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/step.rb', line 152

def can_process?(number_of_eventual_input_years)
  in_freq = Frequency.for_name(@fesom_variable_frequency)
  out_freq = Frequency.for_name(@global_attributes.frequency)
  
  if out_freq.name == "dec" && in_freq < out_freq
    raise OutputFrequencyExceedsInputRangeError.new "#{self.class} can not produce decadal output from #{number_of_eventual_input_years} input years (must have 10 years)" if number_of_eventual_input_years != 10
    return number_of_eventual_input_years == 10
  else
    return true
  end        
end

#file_commands ⇒ Object 



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# File 'lib/step.rb', line 165

def file_commands
  cmds = []
  
  in_freq = Frequency.for_name(@fesom_variable_frequency)
  out_freq = Frequency.for_name(@global_attributes.frequency)

  if(in_freq != out_freq)
    case [in_freq.name, out_freq.name]
    when ["day", "mon"]
      # cdo monmean day_file mon_file
      cmds << CDO_MONMEAN_cmd.new
    when ["mon", "yr"]
      cmds << CDO_YEARMEAN_cmd.new
    when ["day", "dec"], ["mon", "dec"]
      cmds << CDO_TIMMEAN_cmd.new # this will just create a single mean output, so make sure we put in a 10 years file
    else
      raise "can not automatically downsample frequency from '#{in_freq.name}' to '#{out_freq.name}'"
    end
  end
  
  cmds
end