Field Arithmetic
Apply a point-wise arithmetic operation to two DATA_FIELDs of the same resolution. Equivalent to gwy_data_field_sum_fields / subtract_fields / multiply_fields / divide_fields / min_of_fields / max_of_fields / hypot_of_fields.
Inputs
| Name |
Type |
Required |
Description |
| field_a |
DATA_FIELD |
Yes |
First operand |
| field_b |
DATA_FIELD |
Yes |
Second operand |
Outputs
| Name |
Type |
Description |
| result |
DATA_FIELD |
Result of the arithmetic operation (inherits metadata from field_a) |
Controls
| Name |
Type |
Default |
Description |
| operation |
dropdown |
add |
Element-wise operation: add, subtract, multiply, divide, min, max, or hypot (√(a²+b²)) |
Limitations
- Both fields must have exactly the same pixel dimensions; mismatched sizes raise an error.
- divide may produce NaN or Inf pixels where field_b is zero.
