Gwyddion – Free SPM (AFM, SNOM/NSOM, STM, MFM, …) data analysis software

gwyprocessenums

gwyprocessenums — Common enumerations

Functions

const GwyEnum *	gwy_merge_type_get_enum ()
const GwyEnum *	gwy_masking_type_get_enum ()
const GwyEnum *	gwy_plane_symmetry_get_enum ()
const GwyEnum *	gwy_2d_cwt_wavelet_type_get_enum ()
const GwyEnum *	gwy_orientation_get_enum ()
const GwyEnum *	gwy_dwt_type_get_enum ()
const GwyEnum *	gwy_dwt_denoise_type_get_enum ()
const GwyEnum *	gwy_interpolation_type_get_enum ()
const GwyEnum *	gwy_windowing_type_get_enum ()
const GwyEnum *	gwy_correlation_type_get_enum ()
const GwyEnum *	gwy_distance_transform_type_get_enum ()
gint	gwy_computation_state_get_state ()
gdouble	gwy_computation_state_get_fraction ()

Types and Values

enum	GwyMergeType
enum	GwyMaskingType
enum	GwyWatershedStateType
enum	GwyPlaneSymmetry
enum	Gwy2DCWTWaveletType
enum	GwyOrientation
enum	GwyTransformDirection
enum	GwyDataFieldCached
enum	GwyComputationStateType
enum	GwyDWTType
enum	GwyDWTDenoiseType
enum	GwyInterpolationType
enum	GwyPlaneFitQuantity
enum	GwyWindowingType
enum	GwyTipType
enum	GwyTipParamType
enum	GwyCorrelationType
enum	GwyCorrSearchType
enum	GwyGrainQuantity
enum	GwyDataCompatibilityFlags
enum	GwyLineStatQuantity
enum	GwyExteriorType
enum	GwyDistanceTransformType
enum	GwyMinMaxFilterType
enum	GwyRotateResizeType
enum	GwyAffineScalingType
enum	GwyBrickTransposeType
	GwyComputationState

Object Hierarchy

    gpointer
    ╰── GwyComputationState

Includes

#include <libprocess/gwyprocess.h>

Description

Functions

gwy_merge_type_get_enum ()

const GwyEnum *
gwy_merge_type_get_enum (void);

Returns GwyEnum for GwyMergeType enum type.

Returns

NULL-terminated GwyEnum which must not be modified nor freed.

gwy_masking_type_get_enum ()

const GwyEnum *
gwy_masking_type_get_enum (void);

Returns GwyEnum for GwyMaskingType enum type.

Returns

NULL-terminated GwyEnum which must not be modified nor freed.

Since: 2.18

gwy_plane_symmetry_get_enum ()

const GwyEnum *
gwy_plane_symmetry_get_enum (void);

Returns GwyEnum for GwyPlaneSymmetry enum type.

Returns

NULL-terminated GwyEnum which must not be modified nor freed.

gwy_2d_cwt_wavelet_type_get_enum ()

const GwyEnum *
gwy_2d_cwt_wavelet_type_get_enum (void);

Returns GwyEnum for Gwy2DCWTWaveletType enum type.

Returns

NULL-terminated GwyEnum which must not be modified nor freed.

gwy_orientation_get_enum ()

const GwyEnum *
gwy_orientation_get_enum (void);

Returns GwyEnum for GwyOrientation enum type.

Returns

NULL-terminated GwyEnum which must not be modified nor freed.

gwy_dwt_type_get_enum ()

const GwyEnum *
gwy_dwt_type_get_enum (void);

Returns GwyEnum for GwyDWTType enum type.

Returns

NULL-terminated GwyEnum which must not be modified nor freed.

gwy_dwt_denoise_type_get_enum ()

const GwyEnum *
gwy_dwt_denoise_type_get_enum (void);

Returns GwyEnum for GwyDWTDenoiseType enum type.

Returns

NULL-terminated GwyEnum which must not be modified nor freed.

gwy_interpolation_type_get_enum ()

const GwyEnum *
gwy_interpolation_type_get_enum (void);

Returns GwyEnum for GwyInterpolationType enum type.

Returns

NULL-terminated GwyEnum which must not be modified nor freed.

gwy_windowing_type_get_enum ()

const GwyEnum *
gwy_windowing_type_get_enum (void);

Returns GwyEnum for GwyWindowingType enum type.

Returns

NULL-terminated GwyEnum which must not be modified nor freed.

gwy_correlation_type_get_enum ()

const GwyEnum *
gwy_correlation_type_get_enum (void);

Returns GwyEnum for GwyCorrelationType enum type.

Returns

NULL-terminated GwyEnum which must not be modified nor freed.

gwy_distance_transform_type_get_enum ()

const GwyEnum *
gwy_distance_transform_type_get_enum (void);

Returns GwyEnum for GwyDistanceTransformType enum type.

Returns

NULL-terminated GwyEnum which must not be modified nor freed.

Since: 2.43

gwy_computation_state_get_state ()

gint
gwy_computation_state_get_state (GwyComputationState *compstate);

Gets the state field of a computation state struct.

Useful mostly for language bindings.

Parameters

compstate

Computation state.

Returns

The state field of compstate .

Since: 2.49

gwy_computation_state_get_fraction ()

gdouble
gwy_computation_state_get_fraction (GwyComputationState *compstate);

Gets the fraction field of a computation state struct.

Parameters

compstate

Computation state.

Returns

The fraction field of compstate .

Since: 2.49

Types and Values

enum GwyMergeType

Mask merge type (namely used in grain processing).

Members

GWY_MERGE_UNION	Union (logical or) merging.
GWY_MERGE_INTERSECTION	Intersection (logical and) merging.

enum GwyMaskingType

Mask handling in procedures that can apply masking.

Note at present many procedures do not have a masking argument and hence cannot apply masks in exclude mode.

Members

GWY_MASK_EXCLUDE	Exclude data under mask, i.e. take into account only data not covered by the mask.
GWY_MASK_INCLUDE	Take into account only data under the mask.
GWY_MASK_IGNORE	Ignore mask, if present, and use all data.

Since: 2.12

enum GwyWatershedStateType

Members

GWY_WATERSHED_STATE_INIT
GWY_WATERSHED_STATE_LOCATE
GWY_WATERSHED_STATE_MIN
GWY_WATERSHED_STATE_WATERSHED
GWY_WATERSHED_STATE_MARK
GWY_WATERSHED_STATE_FINISHED

enum GwyPlaneSymmetry

Plane symmetry types for rotation correction.

Members

GWY_SYMMETRY_AUTO	Automatic symmetry selection.
GWY_SYMMETRY_PARALLEL	Parallel symmetry, there is one prevalent direction (bilateral).
GWY_SYMMETRY_TRIANGULAR	Triangular symmetry, there are three prevalent directions (unilateral) by 120 degrees.
GWY_SYMMETRY_SQUARE	Square symmetry, two prevalent directions (bilateral) oriented approximately along image sides.
GWY_SYMMETRY_RHOMBIC	Rhombic symmetry, two prevalent directions (bilateral) oriented approximately along diagonals.
GWY_SYMMETRY_HEXAGONAL	Hexagonal symmetry, three prevalent directions (bilateral) by 120 degrees.
GWY_SYMMETRY_LAST	The number of symmetries.

enum Gwy2DCWTWaveletType

Members

GWY_2DCWT_GAUSS
GWY_2DCWT_HAT

enum GwyOrientation

Orientation type.

Members

GWY_ORIENTATION_HORIZONTAL	Horizontal orientation.
GWY_ORIENTATION_VERTICAL	Vertical orientation.

enum GwyTransformDirection

Transform (namely integral transform) direction.

In FFT, it is equal to sign of the exponent, that is the backward transform uses -1, the forward transform +1. This is the opposite sign convention to FFTW (for instance), so care must be taken when mixing operations.

Members

GWY_TRANSFORM_DIRECTION_BACKWARD	Backward (inverse) transform.
GWY_TRANSFORM_DIRECTION_FORWARD	Forward (direct) transform.

enum GwyDataFieldCached

Cached data field quantity type.

There should be little need to this enum directly except in libgwyprocess methods.

Members

GWY_DATA_FIELD_CACHE_MIN	Overall minimum.
GWY_DATA_FIELD_CACHE_MAX	Overall maximum.
GWY_DATA_FIELD_CACHE_SUM	Sum of all values.
GWY_DATA_FIELD_CACHE_RMS	Root mean square.
GWY_DATA_FIELD_CACHE_MED	Median.
GWY_DATA_FIELD_CACHE_ARF	Auto-range from.
GWY_DATA_FIELD_CACHE_ART	Auto-range to.
GWY_DATA_FIELD_CACHE_ARE	Surface area.
GWY_DATA_FIELD_CACHE_VAR	Variation.
GWY_DATA_FIELD_CACHE_ENT	Entropy.
GWY_DATA_FIELD_CACHE_MSQ	Mean square.
GWY_DATA_FIELD_CACHE_SIZE	The size of statistics cache.

enum GwyComputationStateType

Common iterative computation iterator state type.

Members

GWY_COMPUTATION_STATE_INIT	Iterator was set up, the next step will actually create temporary data structures and precalculate values.
GWY_COMPUTATION_STATE_ITERATE	Iteration is in progress, the `fraction` field of state struct holds the fraction completed.
GWY_COMPUTATION_STATE_FINISHED	Calculation has been finished, further calls to the iterator will be no-op.

enum GwyDWTType

Members

GWY_DWT_HAAR
GWY_DWT_DAUB4
GWY_DWT_DAUB6
GWY_DWT_DAUB8
GWY_DWT_DAUB12
GWY_DWT_DAUB20

enum GwyDWTDenoiseType

Members

GWY_DWT_DENOISE_UNIVERSAL
GWY_DWT_DENOISE_SCALE_ADAPTIVE
GWY_DWT_DENOISE_SPACE_ADAPTIVE

enum GwyInterpolationType

Interpolation types.

Members

GWY_INTERPOLATION_NONE	No interpolation at all, resulting values are not defined, it must not be used for interpolation. It can be used in resize operations discarding original data.
GWY_INTERPOLATION_ROUND	Round interpolation (more precisely symmetric nearest neighbour interpolation).
GWY_INTERPOLATION_LINEAR	Linear interpolation.
GWY_INTERPOLATION_BILINEAR	Old name for `GWY_INTERPOLATION_LINEAR`. This is a misnomer because it in fact denotes linear interpolation of arbitrary dimension. Use `GWY_INTERPOLATION_LINEAR` instead.
GWY_INTERPOLATION_KEY	Cubic Key's interpolation (with a=-1/2).
GWY_INTERPOLATION_BSPLINE	B-spline interpolation.
GWY_INTERPOLATION_OMOMS	Omoms interpolation.
GWY_INTERPOLATION_NNA	Nearest neighbour approximation.
GWY_INTERPOLATION_SCHAUM	Cubic Schaum interpolation.

enum GwyPlaneFitQuantity

Local plane fitting quantity to request from gwy_data_field_area_fit_local_planes() and similar functions.

Members

GWY_PLANE_FIT_A	Constant coefficient (mean value).
GWY_PLANE_FIT_BX	Linear coefficient in `x` , where `x` is in pixel coordinates.
GWY_PLANE_FIT_BY	Linear coefficient in `y` , where `y` is in pixel coordinates.
GWY_PLANE_FIT_ANGLE	Slope orientation in (x,y) plane (in radians).
GWY_PLANE_FIT_SLOPE	Absolute slope value (that is sqrt(bxbx + byby)).
GWY_PLANE_FIT_S0	Residual sum of squares.
GWY_PLANE_FIT_S0_REDUCED	Slope-reduced residual sum of squares.

enum GwyWindowingType

Frequency windowing type.

Members

GWY_WINDOWING_NONE	No windowing is applied.
GWY_WINDOWING_HANN	Hann window.
GWY_WINDOWING_HAMMING	Hamming window.
GWY_WINDOWING_BLACKMANN	Blackmann window.
GWY_WINDOWING_LANCZOS	Lanczos window.
GWY_WINDOWING_WELCH	Welch window.
GWY_WINDOWING_RECT	Rectangular window.
GWY_WINDOWING_NUTTALL	Nuttall window (Since 2.7).
GWY_WINDOWING_FLAT_TOP	Flat-top window (Since 2.7).
GWY_WINDOWING_KAISER25	Kaiser window with β=2.5 (Since 2.7).

enum GwyTipType

Type of tip shape presets.

Members

GWY_TIP_PYRAMID	N-sided pyramidal tip.
GWY_TIP_PYRAMIDE	Legacy name for `GWY_TIP_PYRAMID`.
GWY_TIP_CONTACT	Four-sided pyramidal tip.
GWY_TIP_NONCONTACT	Three-sided pyramidal tip.
GWY_TIP_DELTA	Delta function (single-pixel tip).
GWY_TIP_PARABOLA	Parabolic tip. (Since 2.45)
GWY_TIP_CONE	Conical tip. (Since 2.45)
GWY_TIP_ELLPARABOLA	Elliptical parabola tip. (Since 2.47)
GWY_TIP_BALL_ON_STICK	Spherical tip at the end of almost-cyliner. (Since 2.50)

enum GwyTipParamType

Type of tip model preset parameter.

This enum is used with the new tip preset functions gwy_tip_model_get_preset_params(), gwy_tip_model_preset_create(), gwy_tip_model_preset_create_for_zrange().

Members

GWY_TIP_PARAM_HEIGHT	Total tip height. This is used only in the delta function tip; for all others it is implied.
GWY_TIP_PARAM_RADIUS	Radius of curvature of the tip apex.
GWY_TIP_PARAM_ROTATION	Rotation angle.
GWY_TIP_PARAM_NSIDES	Number of sides for pyramidal tips.
GWY_TIP_PARAM_SLOPE	Half-angle of the apex (complement of the side slope for straight sides).
GWY_TIP_PARAM_ANISOTROPY	Ratio between larger and smaller tip width in two orthotonal directions.

Since: 2.47

enum GwyCorrelationType

Members

GWY_CORRELATION_NORMAL
GWY_CORRELATION_FFT
GWY_CORRELATION_POC

enum GwyCorrSearchType

Type of correlation search output.

Members

GWY_CORR_SEARCH_COVARIANCE_RAW	Raw average of data values multiplied by kernel values.
GWY_CORR_SEARCH_COVARIANCE	Local mean value is subtracted from data before kernel multiplication.
GWY_CORR_SEARCH_COVARIANCE_SCORE	In addition, result is normalised by dividing by the local variance.
GWY_CORR_SEARCH_HEIGHT_DIFF_RAW	Raw mean square difference between data and kernel values.
GWY_CORR_SEARCH_HEIGHT_DIFF	Mean values of data and kernel are adjusted before summing the squared differences.
GWY_CORR_SEARCH_HEIGHT_DIFF_SCORE	In addition, result is normalised by dividing by the local variance.
GWY_CORR_SEARCH_PHASE_ONLY_SCORE	Score from phase-only correlation (since 2.63).

Since: 2.50

enum GwyGrainQuantity

Grain quantity to request from gwy_data_field_grains_get_distribution() and similar functions.

Members

GWY_GRAIN_VALUE_PROJECTED_AREA	Projected (flat) grain area.
GWY_GRAIN_VALUE_EQUIV_SQUARE_SIDE	Side of a square with the same area as the grain.
GWY_GRAIN_VALUE_EQUIV_DISC_RADIUS	Radius of a disc with the same area as the grain.
GWY_GRAIN_VALUE_SURFACE_AREA	Surface area.
GWY_GRAIN_VALUE_MAXIMUM	Minimum value.
GWY_GRAIN_VALUE_MINIMUM	Maximum value.
GWY_GRAIN_VALUE_MEAN	Mean value.
GWY_GRAIN_VALUE_MEDIAN	Median value.
GWY_GRAIN_VALUE_PIXEL_AREA	Flat grain area measured in pixels. This value is redundant but it is useful for filtering (Since 2.37).
GWY_GRAIN_VALUE_HALF_HEIGHT_AREA	Projected area of the part of grain that is above the half-height, i.e. the height between the minimum and maximum (Since 2.8).
GWY_GRAIN_VALUE_FLAT_BOUNDARY_LENGTH	Length of projected grain boundary. Note for grains not topologically equivalent to disc, only the length of the outer boundary is calculated.
GWY_GRAIN_VALUE_RMS	Standard deviation of grain values. (Since 2.51)
GWY_GRAIN_VALUE_MINIMUM_BOUND_SIZE	Minimum lateral bounding size, in other words the minimum length of grain projection to any line in the horizontal plane.
GWY_GRAIN_VALUE_MINIMUM_BOUND_ANGLE	Direction of the minimum lateral bounding size (arbitrary one if the minimum is not unique).
GWY_GRAIN_VALUE_MAXIMUM_BOUND_SIZE	Maximum lateral bounding size, in other words the maximum length of grain projection to any line in the horizontal plane.
GWY_GRAIN_VALUE_MAXIMUM_BOUND_ANGLE	Direction of the maximum lateral bounding size (arbitrary one if the maximum is not unique).
GWY_GRAIN_VALUE_CENTER_X	Grain centre horizontal position, i.e. the mean value of its physical x-coordinates. (Since 2.7)
GWY_GRAIN_VALUE_CENTER_Y	Grain centre vertical position, i.e. the mean value of its physical y-coordinates. (Since 2.7)
GWY_GRAIN_VALUE_VOLUME_0	Grain volume calculated with grain basis at `z` =0 (therefore it is just an integral it can be negative). (Since 2.3)
GWY_GRAIN_VALUE_VOLUME_MIN	Grain volume calculated with grain basis at grain minimum value. This value is a lower bound. (Since 2.3)
GWY_GRAIN_VALUE_VOLUME_LAPLACE	Grain volume calculated with grain basis calculated by laplacian interpolation of surrounding values. (Since 2.3)
GWY_GRAIN_VALUE_SLOPE_THETA	Spherical angle theta of grain normal (0 is upwards). (Since 2.7)
GWY_GRAIN_VALUE_SLOPE_PHI	Spherical angle phi of grain normal (0 is in positive x direction). (Since 2.7)
GWY_GRAIN_VALUE_BOUNDARY_MAXIMUM	Maximum value in the grain inner boundary. (Since 2.12)
GWY_GRAIN_VALUE_BOUNDARY_MINIMUM	Minimum value on the grain inner boundary. (Since 2.12)
GWY_GRAIN_VALUE_CURVATURE_CENTER_X	Grain curvature centre horizontal position. For too small or flat grains it reduces to the horizontal position of geometrical centre. (Since 2.22)
GWY_GRAIN_VALUE_CURVATURE_CENTER_Y	Grain curvature centre vertical position. For too small or flat grains it reduces to the vertical position of geometrical centre. (Since 2.22)
GWY_GRAIN_VALUE_CURVATURE_CENTER_Z	The value at curvature centre. Note this is the value in the origin of the fitted quadratic surface, not at the real surface. (Since 2.22)
GWY_GRAIN_VALUE_CURVATURE1	Smaller grain curvature. (Since 2.22)
GWY_GRAIN_VALUE_CURVATURE2	Larger grain curvature. (Since 2.22)
GWY_GRAIN_VALUE_CURVATURE_ANGLE1	Direction of the smaller grain curvature radius. If the grain is flat or too small the angle is reported as 0. (Since 2.22)
GWY_GRAIN_VALUE_CURVATURE_ANGLE2	Direction of the larger grain curvature radius. If the grain is flat or too small the angle is reported as π/2. (Since 2.22)
GWY_GRAIN_VALUE_INSCRIBED_DISC_R	Radius of maximum disc that fits inside the grain (Since 2.30)
GWY_GRAIN_VALUE_INSCRIBED_DISC_X	Real X-coordinate of the centre of the maximum inscribed disc. (Since 2.30)
GWY_GRAIN_VALUE_INSCRIBED_DISC_Y	Real Y-coordinate of the centre of the maximum inscribed disc. (Since 2.30)
GWY_GRAIN_VALUE_CONVEX_HULL_AREA	Projected (flat) area of grain convex hull. (Since 2.30)
GWY_GRAIN_VALUE_CIRCUMCIRCLE_R	Radius of minimum circle containing the grain. (Since 2.30)
GWY_GRAIN_VALUE_CIRCUMCIRCLE_X	Real X-coordinate of the centre of the minimum circumcircle. (Since 2.30)
GWY_GRAIN_VALUE_CIRCUMCIRCLE_Y	Real Y-coordinate of the centre of the minimum circumcircle. (Since 2.30)
GWY_GRAIN_VALUE_MEAN_RADIUS	Mean distance from boundary to the grain centre as defined by `GWY_GRAIN_VALUE_CENTER_X` and `GWY_GRAIN_VALUE_CENTER_Y` . (Since 2.30)
GWY_GRAIN_VALUE_EQUIV_ELLIPSE_MAJOR	Length of major semiaxis of equivalent ellipse. (Since 2.36)
GWY_GRAIN_VALUE_EQUIV_ELLIPSE_MINOR	Length of minor semiaxis of equivalent ellipse. (Since 2.36)
GWY_GRAIN_VALUE_EQUIV_ELLIPSE_ANGLE	Orientation of the major axis of equivalent ellipse. (Since 2.36)
GWY_GRAIN_VALUE_MINIMUM_MARTIN_DIAMETER	Minimum value of Martin diameter. (Since 2.50)
GWY_GRAIN_VALUE_MINIMUM_MARTIN_ANGLE	Direction corresponding to minimum Martin diameter. (Since 2.50)
GWY_GRAIN_VALUE_MAXIMUM_MARTIN_DIAMETER	Maximum value of Martin diameter. (Since 2.50)
GWY_GRAIN_VALUE_MAXIMUM_MARTIN_ANGLE	Direction corresponding to maximum Martin diameter. (Since 2.50)

enum GwyDataCompatibilityFlags

Data line, field, brick and lawn compatibility flags.

It is not recommended to pass GWY_DATA_COMPATIBILITY_ALL to checking functions since not all flags are meaningful for all data objects (even though meaningless flags are generally silently ignored).

Members

GWY_DATA_COMPATIBILITY_RES	Pixel sizes.
GWY_DATA_COMPATIBILITY_REAL	Real (physical) dimensions.
GWY_DATA_COMPATIBILITY_MEASURE	Real to pixel ratios.
GWY_DATA_COMPATIBILITY_LATERAL	Units of lateral dimensions.
GWY_DATA_COMPATIBILITY_VALUE	Units of values (for all curves in the case of lawns).
GWY_DATA_COMPATIBILITY_AXISCAL	Axis calibrations. At present it only makes sense for GwyBrick which can have Z-calibrations. (Since 2.51)
GWY_DATA_COMPATIBILITY_NCURVES	Number of lawn curves. (Since 2.60)
GWY_DATA_COMPATIBILITY_CURVELEN	Lengths of curves in all lawn pixels. (Since 2.60)
GWY_DATA_COMPATIBILITY_ALL	Mask of all defined flags.

enum GwyLineStatQuantity

Line statistical quantities to be requested with gwy_data_field_area_get_line_stats().

Members

GWY_LINE_STAT_MEAN	Mean value.
GWY_LINE_STAT_MEDIAN	Median.
GWY_LINE_STAT_MINIMUM	Minimum value.
GWY_LINE_STAT_MAXIMUM	Maximum value.
GWY_LINE_STAT_RMS	Root mean square of deviations from the mean value.
GWY_LINE_STAT_LENGTH	Line length.
GWY_LINE_STAT_SLOPE	Overall line slope.
GWY_LINE_STAT_TAN_BETA0	Root mean square slope.
GWY_LINE_STAT_RA	Arithmetic mean surface roughness.
GWY_LINE_STAT_RZ	Maximum height of the roughness profile.
GWY_LINE_STAT_RT	Total height of the roughness profile.
GWY_LINE_STAT_SKEW	Line skew.
GWY_LINE_STAT_KURTOSIS	Line excess kurtosis (which is 0 for a Gaussaian distrubution, not 3).
GWY_LINE_STAT_RANGE	Difference between maximum and minimum value (Since 2.42).
GWY_LINE_STAT_VARIATION	Variation (integral of absolute value) (Since 2.42).
GWY_LINE_STAT_MINPOS	Minimum position along the line (Since 2.48).
GWY_LINE_STAT_MAXPOS	Maximum position along the line (Since 2.48).

Since: 2.2

enum GwyExteriorType

Methods to handle pixels outside data.

Many methods currently use a fixed metod of handling of exterior pixels, for example area calculation uses extension (border and mirror coincide), convolution uses mirror extension, rotation fills exterior with a fixed value.

Members

GWY_EXTERIOR_UNDEFINED	The values corresponding to or calculated from exterior data values are undefined, they may be left unset or set to bogus values. The caller must handle them itself afterwards, for instance by resizing the result to consist of valid data only.
GWY_EXTERIOR_BORDER_EXTEND	Values of exterior pixels are considered to be equal to the values of the nearest interior pixels.
GWY_EXTERIOR_MIRROR_EXTEND	The data is considered to be periodically repeated, with odd instances reflected (the total period is thus twice the size of the data).
GWY_EXTERIOR_PERIODIC	The data is considered to be periodically repeated.
GWY_EXTERIOR_FIXED_VALUE	Values of exterior pixels are considered to be all equal to a user-specified value.
GWY_EXTERIOR_LAPLACE	Values of exterior pixels are extended using Laplace interpolation (actually extrapolation) like `gwy_data_field_laplace_solve()`. Only some functions implement this method. (Since 2.50)

Since: 2.2

enum GwyDistanceTransformType

Type of distance transform.

Members

GWY_DISTANCE_TRANSFORM_CITYBLOCK	City-block distance (sum of horizontal and vertical distances).
GWY_DISTANCE_TRANSFORM_CONN4	Four-connectivity distance; another name for city-block distance.
GWY_DISTANCE_TRANSFORM_CHESS	Chessboard distance (maximum of horizontal and vertical distance).
GWY_DISTANCE_TRANSFORM_CONN8	Eight-connectivity distance; another name for chessboard distance.
GWY_DISTANCE_TRANSFORM_OCTAGONAL48	Octagonal distance beginning from city-block.
GWY_DISTANCE_TRANSFORM_OCTAGONAL84	Octagonal distance beginning from chess.
GWY_DISTANCE_TRANSFORM_OCTAGONAL	Average octagonal distance, i.e. the mean of the 48 and 84 distances (Since 2.43).
GWY_DISTANCE_TRANSFORM_EUCLIDEAN	True Euclidean distance (Since 2.43).

Since: 2.41

enum GwyMinMaxFilterType

Type of operation based on morphological filters with flat structuring elements.

Members

GWY_MIN_MAX_FILTER_MINIMUM	Minimum filter, i.e. minimum of the surrounding values.
GWY_MIN_MAX_FILTER_EROSION	Another name for the minimum filter.
GWY_MIN_MAX_FILTER_MAXIMUM	Maximum filter, i.e. maximum of the surrounding values.
GWY_MIN_MAX_FILTER_DILATION	Another name for the maximum filter.
GWY_MIN_MAX_FILTER_OPENING	Morphological opening filter.
GWY_MIN_MAX_FILTER_CLOSING	Morphological closing filter.
GWY_MIN_MAX_FILTER_RANGE	Difference between maximum and minimum.
GWY_MIN_MAX_FILTER_NORMALIZATION	Data value rescaled to the range between minimum and maximum.

Since: 2.43

enum GwyRotateResizeType

Type of rotated data field size determination method.

Members

GWY_ROTATE_RESIZE_SAME_SIZE	The result has the same area as the original.
GWY_ROTATE_RESIZE_EXPAND	The result is sufficiently large so that all original data are present (usually meaning that there will be also lot of exterior).
GWY_ROTATE_RESIZE_CUT	The result is optimally cut to interior data only.

Since: 2.46

enum GwyAffineScalingType

Type of lattice vector scaling in affine transform preparation.

Members

GWY_AFFINE_SCALING_AS_GIVEN	Correct lattice vectors lengths are taken as given.
GWY_AFFINE_SCALING_PRESERVE_AREA	Correct lattice vectors are scaled to make the transformation area-preserving.
GWY_AFFINE_SCALING_PRESERVE_X	Correct lattice vectors are scaled to preserve the scale along `x` -axis.

Since: 2.49

enum GwyBrickTransposeType

Type of volume data transposition.

The enum values names spell which old axis becomes which new axes.

Members

GWY_BRICK_TRANSPOSE_XYZ	No change (useful with axis flipping).
GWY_BRICK_TRANSPOSE_XZY	Axes Z and Y are swapped.
GWY_BRICK_TRANSPOSE_YXZ	Axes Y and Z are swapped.
GWY_BRICK_TRANSPOSE_YZX	Axis X becomes Y, Y becomes Z and Z becomes X.
GWY_BRICK_TRANSPOSE_ZXY	Axis X becomes Z, Y becomes X and Z becomes Y.
GWY_BRICK_TRANSPOSE_ZYX	Axes X and Z are swapped.

Since: 2.51

GwyComputationState

typedef struct {
    guint state;
    gdouble fraction;
} GwyComputationState;

State of iterative computation.

Iterators usually append their own private state data, therefore it must not be assumed the public fields state and fraction are the only fields.

A typical iteration, assuming an iterative computation `foo' with the default GwyComputationStateType state could be:

GwyComputationStateType *state;

state = gwy_data_field_foo_init(GwyDataField *data_field, ...);
do {
    gwy_data_field_foo_iteration(state);
    /* Update progress using state->fraction,
        let Gtk+ main loop run, check for abort, ... */
    if (aborted) {
        gwy_data_field_foo_finalize(state);
        return FALSE;
    }
} while (state->state != GWY_COMPUTATION_STATE_FINISHED);
gwy_data_field_foo_finalize(state);
return TRUE;

Members

guint `state`;	Current computation state, usually of GwyComputationStateType, but particular iterators can define their own types.
gdouble `fraction`;	Fraction of computation completed. For staged algorithms, the fraction refers to the current stage only.

© David Nečas and Petr Klapetek

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