A holistic microclimate model


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filereference:area_input [2012/07/31 19:36]
filereference:area_input [2017/11/10 09:25] (current)
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 ====== Area Input Files (.IN/.IN3) ====== ====== Area Input Files (.IN/.IN3) ======
 +{{ :​eddi_example3d.jpg?​ | 3D View of a simple 2.5 ENVI-met Area }}
 +===== Overview =====
 +**Area Input Files** are one of the basic files when working with ENVI-met. They specify the geometry of model environment such as buildings, plants or soils in detail.\\
 +Information stored in the Area Input Files include:
 +  * position and height of buildings  ​
 +  * position of plants ​
 +  * distribution of surface materials and soil types 
 +  * position of sources ​
 +  * position of receptors ​
 +  * database links 
 +  * geographic position of the location on earth
 +//From Version 3.1 on, the [[number of nesting grids]], the [[soil information for the nesting grids]], the [[model rotation]] and the position on earth are now stored in the Area Input File, not in the Configuration File!
 +**ENVI-met will not accept .IN files in an old format. If you want to re-use some older file, you must open it in the Editor first and save it once to convert it into the V4.0 format!**//
 +The model domain is organised as a rectangular area which extends in x-, y- and z- direction.\\
 +In Area Input Files, you don't "​see"​ the z-direction as you work in the horizontal view only (since Version 3.1), but it is an important part of the model.\\
 +The following figure shows the same example shown in 3D above in the horizontal view as it appears in the ENVI-met Editor:
 +{{ :​anarea.jpg?​nolink | }}
 +The Area Input Files are ASCII files using a matrix format with strict format rules that must be followed to decode the data correctly. ​
 +**Normally it is not necessary for you to deal with the internal details of the file format. It is recommended that you use the ENVI-met editor to create and maintain your Area Input Files!**
 +  * [[File Format Specifications|Click here to learn more about the format of Area Input Files]]