TABLE B‑5

          DESCRIPTION OF RECEPTOR PATHWAY KEYWORDS

                (APPLIES TO ISCST AND ISCLT)

 

RE Keywords

    Type

Keyword Description

STARTING

    M ‑ N

Identifies the start of RECEPTOR pathway inputs

ELEVUNIT

    O - N

Defines input units for receptor elevations (defaults to meters), must be first keyword after RE STARTING if used.

GRIDCART

    O ‑ R1

Defines a Cartesian grid receptor network

GRIDPOLR

    O ‑ R1

Defines a polar receptor network

DISCCART

    O ‑ R1

Defines the discretely placed receptor locations referenced to a Cartesian system

DISCPOLR

    O ‑ R1

Defines the discretely placed receptor locations referenced to a polar system

BOUNDARY

    O ‑ R1

Defines discrete polar receptor locations corresponding to minimum plant boundary distances for each 10 degree sector

BOUNDELV

    O ‑ R

Defines terrain elevations for discrete receptors specified with BOUNDARY keyword

FINISHED

    M ‑ N

Identifies the end of RECEPTOR pathway inputs

1)

 

 

 

 

At least one of the following must be present:  GRIDCART, GRIDPOLR, DISCCART, DISCPOLR, or BOUNDARY.  Multiple receptor networks can be specified in a single run, including both Cartesian and polar, up to an overall maximum controlled by the NREC parameter.

 

               
 

                          TABLE B‑6

   DESCRIPTION OF RECEPTOR PATHWAY KEYWORDS AND PARAMETERS

                (APPLIES TO ISCST AND ISCLT)

 

Keyword

Parameters

ELEVUNIT

METERS  or  FEET

  where:

METERS

 

FEET

Specifies input units for receptor elevations of

  meters

Specifies input units for receptor elevations of feet

    Note: This keyword applies to receptor elevations

          only.

GRIDCART

Netid  STA

       XYINC  Xinit   Xnum    Xdelta  Yinit  Ynum Ydelta

   or  XPNTS  Gridx1  Gridx2  Gridx3  ....   GridxN, and

       YPNTS  Gridy1  Gridy2  Gridy3  ....   GridyN

       ELEV   Row  Zelev1  Zelev2  Zelev3  ... ZelevN

       FLAG   Row  Zflag1  Zflag2  Zflag3  ... ZflagN

       END

  where:

Netid

 

STA

 

XYINC

 

Xinit

Xnum

Xdelta

Yinit

Ynum

Ydelta

 

XPNTS

 

Gridx1

GridxN

YPNTS

 

Gridy1

GridyN

ELEV

Row

 

Zelev

 

FLAG

 

Row

 

Zflag

 

END

Receptor network identification code (up to eight

  alphanumeric characters)

Indicates STArt of GRIDCART subpathway, repeat for

  each new Netid

Keyword identifying grid network generated from

  x and y increments

Starting x‑axis grid location in meters

Number of x‑axis receptors

Spacing in meters between x‑axis receptors

Starting y‑axis grid location in meters

Number of y‑axis receptors

Spacing in meters between y‑axis receptors

 

Keyword identifying grid network defined by a series

  of x and y coordinates

Value of first x‑coordinate for Cartesian grid

Value of 'nth' x‑coordinate for Cartesian grid

Keyword identifying grid network defined by a series

  of x and y coordinates

Value of first y‑coordinate for Cartesian grid

Value of 'nth' y‑coordinate for Cartesian grid

Keyword to specify that receptor elevations follow

Indicates which row (y‑coordinate fixed) is being

  input

An array of receptor terrain elevations for

  a particular Row

Keyword to specify that flagpole receptor heights

  follow

Indicates which row (y‑coordinate fixed) is being

  input

An array of receptor heights above local terrain

  elevation for a particular Row (flagpole receptors)

Indicates END of GRIDCART subpathway, repeat for each

  new Netid

 

 

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