| Tool Name | Modified Quadratic Shepard |
| Tool ID | 4 |
| Library ID | grid_gridding |
| Version | 1.0 |
| Author(s) | A.Ringeler (c) 2003 |
Renka, R.J. (1988): QSHEP2D: Fortran routines implementing the Quadratic Shepard method for bivariate interpolation of scattered data. ACM TOMS 14, Classes E2b, Interpolation of scattered, non-gridded multivariate data, 149-150.
| Name | Type | Identifier | Description | Constraints |
|---|---|---|---|---|
| Input | ||||
| Points | shapes, input | POINTS | ||
| Target System | grid, input, optional | TARGET_TEMPLATE | use this grid's system for output grids | |
| Output | ||||
| Cross Validation Summary | table, output, optional | CV_SUMMARY | ||
| Cross Validation Residuals | shapes, output, optional | CV_RESIDUALS | ||
| Target Grid | grid, output | TARGET_OUT_GRID | ||
| Options | ||||
| Attribute | table field | FIELD | ||
| Cross Validation | choice | CV_METHOD | Available Choices: [0] none [1] leave one out [2] 2-fold [3] k-fold Default: 0 | |
| Cross Validation Subsamples | integer number | CV_SAMPLES | number of subsamples for k-fold cross validation | Minimum: 2 Default: 10 |
| Target Grid System | choice | TARGET_DEFINITION | Available Choices: [0] user defined [1] grid or grid system Default: 0 | |
| Cellsize | floating point number | TARGET_USER_SIZE | Minimum: 0.000000 Default: 1.000000 | |
| West | floating point number | TARGET_USER_XMIN | Default: 0.000000 | |
| East | floating point number | TARGET_USER_XMAX | Default: 100.000000 | |
| South | floating point number | TARGET_USER_YMIN | Default: 0.000000 | |
| North | floating point number | TARGET_USER_YMAX | Default: 100.000000 | |
| Columns | integer number | TARGET_USER_COLS | Number of cells in East-West direction. | Minimum: 1 Default: 101 |
| Rows | integer number | TARGET_USER_ROWS | Number of cells in North-South direction. | Minimum: 1 Default: 101 |
| Rounding | boolean | TARGET_USER_FLAT | Round bounding coordinates to multiples of cell size. Ignored if cell size has decimal places. | Default: 1 |
| Fit | choice | TARGET_USER_FITS | Available Choices: [0] nodes [1] cells Default: 0 | |
| Quadratic Neighbors | integer number | QUADRATIC_NEIGHBORS | Minimum: 5 Default: 13 | |
| Weighting Neighbors | integer number | WEIGHTING_NEIGHBORS | Minimum: 3 Default: 19 | |