Inverse distance weighted interpolation for 3-dimensional data points. Output will be a grid collection with evenly spaced Z-levels representing the 3rd dimension. 
|   | Name | Type | Identifier | Description | Constraints | 
| Input | Points | Shapes, input | POINTS | - | - | 
 | Target System (*) | Grid, input, optional, CMD | TARGET_TEMPLATE | use this grid's system for output grids | - | 
| Output | Grid Collection | Grids, output | GRIDS | - | - | 
| Options | Z | Table field | Z_FIELD | - | - | 
 | Z Factor | Floating point | Z_SCALE | - | Default: 1.000000 | 
 | Value | Table field | V_FIELD | - | - | 
 | Target Grid System | Choice | TARGET_DEFINITION | - | Available Choices: [0] user defined [1] grid or grid system Default: 0 | 
 | Cellsize | Floating point | TARGET_USER_SIZE | - | Minimum: 0.000000 Default: 1.000000 | 
 | West | Floating point | TARGET_USER_XMIN | - | Default: 0.000000 | 
 | East | Floating point | TARGET_USER_XMAX | - | Default: 100.000000 | 
 | South | Floating point | TARGET_USER_YMIN | - | Default: 0.000000 | 
 | North | Floating point | TARGET_USER_YMAX | - | Default: 100.000000 | 
 | Columns | Integer | TARGET_USER_COLS | Number of cells in East-West direction. | Minimum: 1 Default: 100 | 
 | Rows | Integer | TARGET_USER_ROWS | Number of cells in North-South direction. | Minimum: 1 Default: 100 | 
 | Fit | Choice | TARGET_USER_FITS | - | Available Choices: [0] nodes [1] cells Default: 0 | 
 | Grid System | Grid system | TARGET_SYSTEM | - | - | 
 | Cellsize | Floating point | TARGET_USER_ZSIZE | - | Minimum: 0.000000 Default: 1.000000 | 
 | Bottom | Floating point | TARGET_USER_ZMIN | - | Default: 0.000000 | 
 | Top | Floating point | TARGET_USER_ZMAX | - | Default: 100.000000 | 
 | Levels | Integer | TARGET_USER_ZNUM | - | Minimum: 1 Default: 100 | 
 | Search Range | Choice | SEARCH_RANGE | - | Available Choices: [0] local [1] global Default: 1 | 
 | Maximum Search Distance | Floating point | SEARCH_RADIUS | local maximum search distance given in map units | Minimum: 0.000000 Default: 1000.000000 | 
 | Number of Points | Choice | SEARCH_POINTS_ALL | - | Available Choices: [0] maximum number of nearest points [1] all points within search distance Default: 1 | 
 | Minimum | Integer | SEARCH_POINTS_MIN | minimum number of points to use | Minimum: 1 Default: 1 | 
 | Maximum | Integer | SEARCH_POINTS_MAX | maximum number of nearest points | Minimum: 1 Default: 20 | 
 | Weighting Function | Choice | DW_WEIGHTING | - | Available Choices: [0] no distance weighting [1] inverse distance to a power [2] exponential [3] gaussian Default: 0 | 
 | Power | Floating point | DW_IDW_POWER | - | Minimum: 0.000000 Default: 2.000000 | 
 | Bandwidth | Floating point | DW_BANDWIDTH | Bandwidth for exponential and Gaussian weighting | Minimum: 0.000000 Default: 1.000000 | 
| (*) optional |