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Data arithmetic functions perform simple operations combining several data fields. Their sizes have to be size-compatible, i.e. gwy_data_field_check_compatibility(operand1, operand2, GWY_DATA_COMPATIBILITY_RES) must pass and the same must hold for the data field to store the result to.
Functions gwy_data_field_check_compatibility()
and
gwy_data_line_check_compatibility()
simplify testing compatibility of data
fields and lines, respectively.
void gwy_data_field_sum_fields (GwyDataField *result
,GwyDataField *operand1
,GwyDataField *operand2
);
Sums two data fields.
void gwy_data_field_subtract_fields (GwyDataField *result
,GwyDataField *operand1
,GwyDataField *operand2
);
Subtracts one data field from another.
void gwy_data_field_divide_fields (GwyDataField *result
,GwyDataField *operand1
,GwyDataField *operand2
);
Divides one data field with another.
void gwy_data_field_multiply_fields (GwyDataField *result
,GwyDataField *operand1
,GwyDataField *operand2
);
Multiplies two data fields.
void gwy_data_field_min_of_fields (GwyDataField *result
,GwyDataField *operand1
,GwyDataField *operand2
);
Finds point-wise maxima of two data fields.
void gwy_data_field_max_of_fields (GwyDataField *result
,GwyDataField *operand1
,GwyDataField *operand2
);
Finds point-wise minima of two data fields.
void gwy_data_field_hypot_of_fields (GwyDataField *result
,GwyDataField *operand1
,GwyDataField *operand2
);
Finds point-wise hypotenuse of two data fields.
result |
A data field to put the result to. May be one of |
|
operand1 |
First data field operand. |
|
operand2 |
Second data field operand. |
Since: 2.31
GwyDataCompatibilityFlags gwy_data_field_check_compatibility (GwyDataField *data_field1
,GwyDataField *data_field2
,GwyDataCompatibilityFlags check
);
Checks whether two data fields are compatible.
GwyDataCompatibilityFlags gwy_data_line_check_compatibility (GwyDataLine *data_line1
,GwyDataLine *data_line2
,GwyDataCompatibilityFlags check
);
Checks whether two data lines are compatible.
GwyDataField * gwy_data_field_extend (GwyDataField *data_field
,guint left
,guint right
,guint up
,guint down
,GwyExteriorType exterior
,gdouble fill_value
,gboolean keep_offsets
);
Creates a new data field by extending another data field using the specified method of exterior handling.
left |
Number of pixels to extend to the left (towards lower column indices). |
|
right |
Number of pixels to extend to the right (towards higher column indices). |
|
up |
Number of pixels to extend up (towards lower row indices). |
|
down |
Number of pixels to extend down (towards higher row indices). |
|
exterior |
Exterior pixels handling. |
|
fill_value |
The value to use with |
|
keep_offsets |
|
Since: 2.36