This user object component takes an Energy Plus Weather (.epw) file path input and deconstructs the tabulated data into lists corresponding to the sample dates. These lists are grouped into branches according to their data types to reduce the complexity of the outputs. The breakdown and descriptions are taken from,, specifically pages (32 – 43). This component was originally developed to find the average turbidity values for a specific region for use in Maxwell Renderings.
INPUT File Path Item epw Filepath to an .epw format file
INPUT Integer Item I An optional integer input which specifies the line where tabulated data begins
OUTPUT Integers List Location A list containing the

  • City
  • State or Province
  • Country Code
  • Source
  • WMO
  • Latitude
  • Longitude
  • Time Zone
  • Elevation
OUTPUT Double Datatree Date_Time A datatree where each branch contains the parameters for a sample point, list items contain

  • Year
  • Month
  • Day
  • Hour
  • Minute
OUTPUT String Datatree Uncertainty A datatree where each branch corresponds to the date based sample point and contains the Uncertainty Flags
OUTPUT Double Datatree Comfort The remaining outputs all contain datatree’s where each branch corresponds to the date based sample point, list items contain data about

  • Dry Bulb Temperature
  • Dew Point Temperature
  • Relative Humidity
  • Atmospheric Station Pressure
OUTPUT Double Datatree Radiation
  • Extraterrestrial Horizontal Radiation
  • Extraterrestrial Direct Normal Radiation
  • Horizontal Infrared Radiation Intensity
  • Global Horizontal Radiation
  • Direct Normal Radiation
  • Diffuse Horizontal Radiation
OUTPUT Double Datatree Illuminance
  • Horizontal Illuminance
  • Direct Normal Illuminance
  • Diffuse Horizontal Illuminance
  • Zenith Luminance
OUTPUT Double Datatree Wind
  • Wind Direction
  • Wind Speed
OUTPUT Double Datatree Sky
  • Total Sky Cover
  • Opaque Sky Cover
  • Visibility
OUTPUT Double Datatree Weather
  • Ceiling Height
  • Present Weather Observation
  • Present Weather Codes
OUTPUT Double Datatree Precipitation
  • Precipitable Water
  • Aerosol Optical Depth
  • Snow Depth
  • Days Since Last Snowfall
gha | Download User Objects
Platform | Rhino 5, Grasshopper
Version | Grasshopper 0.9.0075
Type | Visual Basic Component