| File Name | Format | Description | 
|---|---|---|
GRIDDESC | 
                        ASCII | Grid descriptions file that defines the output grid for the output surrogates file created by the program. It must include
                           the name of the grid set by the IOAPI_GRIDNAME_1 environment variable setting.
                         | 
                     
INFILE | 
                        ASCII | Area and Mobile spatial surrogate file format (see Section 8.4.2, “Area and Mobile Spatial Surrogates Files”) and Biogenic spatial surrogate file format (see Section 8.4.5, “BGPRO: Biogenic spatial surrogate file”). File can be for Lambert Conformal, UTM, or lat-lon projection.
                         | 
                     
IOAPI_GRIDNAME_1: [default: blank]
                     
This variable sets the name of the output grid definition to be read from the GRIDDESC input file. The name can be a maximum of 16 characters (the limitation of I/O API grid names).
                     
| File Name | Format | Description | 
|---|---|---|
LOGFILE | 
                        ASCII | Log generated from executing Surgtool | 
OUTFILE | 
                        ASCII | Estimated surrogates file for the grid defined in GRIDDESC and selected by the IOAPI_GRIDNAME_1 setting. This surrogates file is not as accurate as creating a spatial surrogates file from the MIMS spatial allocator. However,
                           the finer the Surgtool input grid is relative to the output grid, the more accurate the estimated surrogates are.
                         |