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     The first thing to note about these inputs is that there is a new set of keywords, including something that looks like a STArting and ENDing.  In fact the GRIDPOLR keyword can be thought of as a "sub‑pathway," in that all of the information for a particular polar network must be in contiguous records, and that the starting and ending of the sub‑pathway are identified.  The order of secondary keywords within the sub‑pathway is not critical, similar to the main pathways. Each card must be identified with a network ID (up to eight alphanumeric characters), in this case it is "POL1."  Multiple networks may be specified in a single model run.  The model waits until the END secondary keyword is encountered to set the variables, which may include terrain heights for receptors on elevated terrain or flagpole receptor heights if those options are being exercised by the user.  The use of these optional secondary keywords is described in detail in Section 3.4.

     For this example, the ORIG secondary keyword specifies the location of the origin, in (X,Y) coordinates, for the polar network being defined.  This network is centered at the same (X,Y) location as the source specified above.  The ORIG keyword is optional, and the model will default to an origin of (0.0, 0.0) if it is omitted.  The DIST keyword identifies the  distances along each direction radial at which the receptors will be located.  In this case there are five distances.  More could be added by adding values to that input card or by including a continuation card, if needed.  The GDIR keyword specifies that the model will Generate DIRection radials for the network, in this case there will be 36 directions, beginning with the 10 degree flow vector and incrementing every 10 degrees clockwise.  The user may elect to define Discrete DIRection radials instead by using the DDIR keyword in place of the GDIR keyword.

 

 

 

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  APLICACIONES castellano: DIS CUS DES  RAD   english: DIS CUS DES RAD  

 

 português: DIS CUS DES RAD   italiano:   DIS CUS  DES RAD

 

français:  DIS CUS DES RAD