A holistic microclimate model

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filereference:edx_edi [2017/11/10 09:25] – external edit 127.0.0.1filereference:edx_edi [2022/12/06 16:12] – [The EDT Binary file] enviadmin
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       For y:=0 to YY-1 do       For y:=0 to YY-1 do
         For x:=0 to XX-1 do         For x:=0 to XX-1 do
-          For n:=0 to D do+          For n:=0 to D-1 do
             Write Variable[i].Value[x][y][z][n];             Write Variable[i].Value[x][y][z][n];
  end;  end;
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 Here ''XX'',''YY'' and ''ZZ'' are the dimensions of the model domain started counting at x=0,y=0,z=0 at the **lower left corner** of the model. ''D'' is the variable dimension of the file. For most files, ''D'' is 1 (=one data value for each grid coordinate and variable), for façade files e.g. ''D'' is 3 (= 3 values for each grid for the left x-, front y- and bottom z- face. The values for the right x-, rear y- and top z-face are stored in the neighbour cells). Here ''XX'',''YY'' and ''ZZ'' are the dimensions of the model domain started counting at x=0,y=0,z=0 at the **lower left corner** of the model. ''D'' is the variable dimension of the file. For most files, ''D'' is 1 (=one data value for each grid coordinate and variable), for façade files e.g. ''D'' is 3 (= 3 values for each grid for the left x-, front y- and bottom z- face. The values for the right x-, rear y- and top z-face are stored in the neighbour cells).
  
 +In addition, the 3D files for building façades hold **one** field  of dimension 1 at the very beginning: 
 +<code Pascal>
 +
 +    For z:= 0 to ZZ-1 do
 +      For y:=0 to YY-1 do
 +        For x:=0 to XX-1 do
 +             Write ObjectData[x][y][z];
 +
 +</code>
 +This field holds the general Object information like in the atmosphere files marking the position of buildings, plants, DEM and sources.
 +
 +
 +==== No Data Flag ====
 +
 +In all ENVI-met output files, the value of **-999** represents the "No Data" flag.  Why certain grids do not carry valid data depends mainly on the data itself and how it was generated, so no general expatiation can be given here. In any case, data flagged with a "No Data" value should not be included in any further data analysis or visualisation.