The tool can be used to reclassify the values of a grid. It provides three different options:
(a) reclassification of single values
(b) reclassification of a range of values
(c) reclassification of value ranges specified in a lookup table (simple or user supplied table)
In addition to these methods, two special cases (No Data values and values not included in the reclassification setup) are supported.
With reclassification mode (a) and (b), the 'No Data' option is evaluated before the 'Method' settings. In reclassification mode (c) the option is evaluated only if the No Data value is not included in the lookup table.
The 'Other Values' option is always evaluated after checking the 'Method' settings.
The tool also provides options to control the data storage type and No Data value of the output grid.
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Grid | grid, input | INPUT | Grid to reclassify. | - |
| Lookup Table | table, input, optional | RETAB_2 | The lookup table used with method 'user supplied table'. | - |
| Output | Reclassified Grid | grid, output | RESULT | Reclassified grid. | - |
| Options | Grid System | grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Method | choice | METHOD | Select the desired method: (1) a single value or a range defined by a single value is reclassified, (2) a range of values is reclassified, (3) and (4) a lookup table is used to reclassify the grid. | Available Choices:
[0] single
[1] range
[2] simple table
[3] user supplied table
Default: 0 |
| Old Value | floating point number | OLD | Value to reclassify. | Default: 0.000000 |
| New Value | floating point number | NEW | The value to assign (with method 'single value'). | Default: 1.000000 |
| Operator | choice | SOPERATOR | Select the desired operator; it is possible to define a range above or below the old value. | Available Choices:
[0] =
[1] <
[2] <=
[3] >=
[4] >
Default: 0 |
| Minimum Value | floating point number | MIN | The minimum value of the range to be reclassified. | Default: 0.000000 |
| Maximum Value | floating point number | MAX | The maximum value of the range to be reclassified. | Default: 10.000000 |
| New Value | floating point number | RNEW | The value to assign (with method 'range'). | Default: 5.000000 |
| Operator | choice | ROPERATOR | Select the desired operator (for method 'range'): eg. min < value < max. | Available Choices:
[0] <=
[1] <
Default: 0 |
| Lookup Table | static table | RETAB | The lookup table used with method 'table'. | 3 Fields:
- 1. [8 byte floating point number] minimum
- 2. [8 byte floating point number] maximum
- 3. [8 byte floating point number] new
|
| Operator | choice | TOPERATOR | Select the desired operator (for method 'table'). | Available Choices:
[0] min <= value < max
[1] min <= value <= max
[2] min < value <= max
[3] min < value < max
Default: 0 |
| Minimum Value | table field | F_MIN | The table field with the minimum value. | - |
| Maximum Value | table field | F_MAX | The table field with the maximum value. | - |
| New Value | table field | F_CODE | The table field with the value to assign. | - |
| No Data Values | boolean | NODATAOPT | Use this option to reclassify No Data values independently of the method settings. | Default: 0 |
| New Value | floating point number | NODATA | The value to assign to No Data values. | Default: 0.000000 |
| Other Values | boolean | OTHEROPT | Use this option to reclassify all values that are not included in the reclassification setup. | Default: 0 |
| New Value | floating point number | OTHERS | The value to assign to all values not included in the reclassification setup. | Default: 0.000000 |
| Data Storage Type | data type | RESULT_TYPE | The data storage type of the output grid. | Available Choices:
[0] bit
[1] unsigned 1 byte integer
[2] signed 1 byte integer
[3] unsigned 2 byte integer
[4] signed 2 byte integer
[5] unsigned 4 byte integer
[6] signed 4 byte integer
[7] unsigned 8 byte integer
[8] signed 8 byte integer
[9] 4 byte floating point number
[10] 8 byte floating point number
[11] same as first grid in list
Default: 11 |
| No Data Value | choice | RESULT_NODATA_CHOICE | Choose how to handle the No Data value of the output grid. | Available Choices:
[0] No Data value of input grid
[1] user defined No Data value
[2] No Data value of data storage type
Default: 0 |
| No Data Value | floating point number | RESULT_NODATA_VALUE | User defined No Data value for output grid. | Default: -99999.000000 |