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Functions
int	I_cluster_assign (struct Cluster , int )
	Assign cluster. More...

int	I_cluster_begin (struct Cluster *, int)
	Initialize the cluster routines for nbands. More...

int	I_cluster_clear (struct Cluster *)
	Clear Cluster structure. More...

int	I_cluster_distinct (struct Cluster *, double)
	Get distinct value. More...

int	I_cluster_exec (struct Cluster , int, int, double, double, int, int()(struct Cluster , int), int )

int	I_cluster_exec_allocate (struct Cluster *)
	Allocate Cluster structure. More...

int	I_cluster_exec_free (struct Cluster *)
	Free allocated Cluster structure. More...

int	I_cluster_means (struct Cluster *)
	Calculate means value. More...

int	I_cluster_merge (struct Cluster *)
	? More...

int	I_cluster_nclasses (struct Cluster *, int)
	Get number of classes. More...

int	I_cluster_point (struct Cluster , DCELL )
	Adds the point x to the list of data points to be "clustered". More...

int	I_cluster_begin_point_set (struct Cluster *, int)
	Begin point set. More...

int	I_cluster_point_part (struct Cluster *, DCELL, int, int)
	? More...

int	I_cluster_end_point_set (struct Cluster *, int)
	? More...

int	I_cluster_reassign (struct Cluster , int )
	? More...

int	I_cluster_reclass (struct Cluster *, int)
	Reclass data. More...

double	I_cluster_separation (struct Cluster *, int, int)
	? More...

int	I_cluster_signatures (struct Cluster *)
	Create signatures. More...

int	I_cluster_sum2 (struct Cluster *)
	Compute sum of squares for each class. More...

Function Documentation

◆ I_cluster_assign()

int I_cluster_assign	(	struct Cluster *	C,
		int *	interrupted
	)

Assign cluster.

Parameters

C	pointer to Cluster structure
interrupted	?

Returns: -1 on interrupted; 0 on success

Definition at line 26 of file c_assign.c.

Referenced by I_cluster_exec().

◆ I_cluster_begin()

int I_cluster_begin	(	struct Cluster *	C,
		int	nbands
	)

Initialize the cluster routines for nbands.

Parameters

C	pointer to Cluster structure
nbands	number of bands

Returns: 0 ok; -1 out of memory; 1 illegal number of bands

Definition at line 28 of file c_begin.c.

References _, Cluster::band_sum, Cluster::band_sum2, free(), I_free_signatures(), I_init_signatures(), malloc(), Cluster::nbands, Cluster::np, Cluster::npoints, NULL, Cluster::points, Cluster::S, and Signature::title.

◆ I_cluster_begin_point_set()

int I_cluster_begin_point_set	(	struct Cluster *	C,
		int	n
	)

Begin point set.

Parameters

C	pointer to Cluster structure
n	?

Returns: 0 on success; -1 on error

Definition at line 71 of file c_point.c.

◆ I_cluster_clear()

int I_cluster_clear ( struct Cluster * C )

Clear Cluster structure.

Parameters

C	pointer to Cluster structure

Returns: 0

Definition at line 23 of file c_clear.c.

References Cluster::band_sum, Cluster::band_sum2, Cluster::class, Cluster::count, Cluster::countdiff, I_init_signatures(), Cluster::mean, Cluster::nbands, NULL, Cluster::points, Cluster::reclass, Cluster::S, Cluster::sum, Cluster::sum2, and Cluster::sumdiff.

◆ I_cluster_distinct()

int I_cluster_distinct	(	struct Cluster *	C,
		double	separation
	)

Get distinct value.

Parameters

C	pointer to Cluster structure
separation	separation value

Returns: distinction value

Definition at line 24 of file c_distinct.c.

References Cluster::count, I_cluster_separation(), I_cluster_sum2(), Cluster::merge1, Cluster::merge2, and Cluster::nclasses.

Referenced by I_cluster_exec().

◆ I_cluster_end_point_set()

int I_cluster_end_point_set	(	struct Cluster *	C,
		int	n
	)

?

Parameters

C	pointer to Cluster structure
n	?

Returns: number of points

Definition at line 109 of file c_point.c.

◆ I_cluster_exec()

int I_cluster_exec	(	struct Cluster *	C,
		int	maxclass,
		int	iterations,
		double	convergence,
		double	separation,
		int	min_class_size,
		int()(struct Cluster , int)	checkpoint,
		int *	interrupted
	)

Parameters

C	pointer to Cluster structure
maxclass	maximum number of classes
iterations	maximum number of iterations
convergence	percentage of points stable
separation	minimum distance between class centroids
min_class_size	minimum size of class
checkpoint	routine to be called at various steps
interrupted	boolean to check for interrupt

Returns: 0 ok; -1 out of memory; -2 interrupted; 1 not enough data points

Definition at line 32 of file c_exec.c.

References _, G_warning(), I_cluster_assign(), I_cluster_distinct(), I_cluster_exec_allocate(), I_cluster_means(), I_cluster_merge(), I_cluster_reassign(), I_cluster_reclass(), I_cluster_signatures(), I_cluster_sum2(), if(), Cluster::nclasses, and Cluster::npoints.

◆ I_cluster_exec_allocate()

int I_cluster_exec_allocate ( struct Cluster * C )

Allocate Cluster structure.

Parameters

C	pointer to Cluster structure

Returns: 1 on success; 0 on error

Definition at line 24 of file c_execmem.c.

References Cluster::class, Cluster::count, Cluster::countdiff, G_debug(), I_alloc_double2(), I_alloc_int(), I_cluster_exec_free(), Cluster::mean, Cluster::nbands, Cluster::nclasses, Cluster::npoints, NULL, Cluster::reclass, Cluster::sum, Cluster::sum2, and Cluster::sumdiff.

Referenced by I_cluster_exec().

◆ I_cluster_exec_free()

int I_cluster_exec_free ( struct Cluster * C )

Free allocated Cluster structure.

Parameters

C	pointer to Cluster structure

Returns: 0

Definition at line 53 of file c_execmem.c.

References Cluster::class, Cluster::count, Cluster::countdiff, I_free(), I_free_double2(), Cluster::mean, NULL, Cluster::reclass, Cluster::sum, Cluster::sum2, and Cluster::sumdiff.

Referenced by I_cluster_exec_allocate().

◆ I_cluster_means()

int I_cluster_means ( struct Cluster * C )

Calculate means value.

Parameters

C	pointer to Cluster structure

Returns: 0

Definition at line 24 of file c_means.c.

Referenced by I_cluster_exec().

◆ I_cluster_merge()

int I_cluster_merge ( struct Cluster * C )

?

Parameters

C	pointer to Cluster structure

Returns: 0

Definition at line 23 of file c_merge.c.

References Cluster::class, Cluster::count, Cluster::merge1, Cluster::merge2, Cluster::nbands, Cluster::npoints, and Cluster::sum.

Referenced by I_cluster_exec().

◆ I_cluster_nclasses()

int I_cluster_nclasses	(	struct Cluster *	C,
		int	minsize
	)

Get number of classes.

Parameters

C	pointer to Cluster structure
minsize	minimum class size

Returns: number of classes

Definition at line 24 of file c_nclasses.c.

References Cluster::count, and Cluster::nclasses.

◆ I_cluster_point()

int I_cluster_point	(	struct Cluster *	C,
		DCELL *	x
	)

Adds the point x to the list of data points to be "clustered".

The dimension of x must agree with the number of bands specified in the initializing call to I_cluster_begin()

Note: if all values in x are zero, the point is rejected

Returns: 0 ok; -1 out of memory, point not added; 1 all values are null, point not added

Definition at line 32 of file c_point.c.

References Cluster::nbands, Rast_is_d_null_value, and x.

◆ I_cluster_point_part()

int I_cluster_point_part	(	struct Cluster *	C,
		DCELL	x,
		int	band,
		int	n
	)

?

Parameters

C	pointer to Cluster structure
x	cell value
band	band number
n	?

Returns: 0 ok; -1 out of memory, point not added; 1 all values are null, point not added

Definition at line 88 of file c_point.c.

◆ I_cluster_reassign()

int I_cluster_reassign	(	struct Cluster *	C,
		int *	interrupted
	)

?

Parameters

C	pointer to Cluster structure
interrupted

Returns: number of changes

Definition at line 25 of file c_reassign.c.

References min.

Referenced by I_cluster_exec().

◆ I_cluster_reclass()

int I_cluster_reclass	(	struct Cluster *	C,
		int	minsize
	)

Reclass data.

Parameters

C	pointer to Cluster structure
minsize	minimum class size

Returns: 0 on success; 1 no change

Definition at line 25 of file c_reclass.c.

Referenced by I_cluster_exec().

◆ I_cluster_separation()

double I_cluster_separation	(	struct Cluster *	C,
		int	class1,
		int	class2
	)

?

Parameters

C	pointer to Cluster structure
class1	1st class
class2	2nd class

Definition at line 26 of file c_sep.c.

Referenced by I_cluster_distinct().

◆ I_cluster_signatures()

int I_cluster_signatures ( struct Cluster * C )

Create signatures.

Parameters

C	pointer to Cluster structure

Returns: 0

Definition at line 23 of file c_sig.c.

Referenced by I_cluster_exec().

◆ I_cluster_sum2()

int I_cluster_sum2 ( struct Cluster * C )

Compute sum of squares for each class.

Parameters

C	pointer to Cluster structure

Returns: 0

Definition at line 23 of file c_sum2.c.

References G_debug(), Cluster::nbands, Cluster::nclasses, Cluster::npoints, Cluster::points, and Cluster::sum2.

Referenced by I_cluster_distinct(), and I_cluster_exec().

Functions

Function Documentation

◆ I_cluster_assign()

◆ I_cluster_begin()

◆ I_cluster_begin_point_set()

◆ I_cluster_clear()

◆ I_cluster_distinct()

◆ I_cluster_end_point_set()

◆ I_cluster_exec()

◆ I_cluster_exec_allocate()

◆ I_cluster_exec_free()

◆ I_cluster_means()

◆ I_cluster_merge()

◆ I_cluster_nclasses()

◆ I_cluster_point()

◆ I_cluster_point_part()

◆ I_cluster_reassign()

◆ I_cluster_reclass()

◆ I_cluster_separation()

◆ I_cluster_signatures()

◆ I_cluster_sum2()