Nodes API

Functions
DLL_EXPORT void	vlbi_add_node (vlbi_context ctx, dsp_stream_p Stream, const char *name, int geographic_coordinates)
	Add a stream into the current OpenVLBI context. More...
DLL_EXPORT void	vlbi_copy_node (void *ctx, const char *name, const char *node)
	Copy a node into a new one. More...
DLL_EXPORT dsp_stream_p	vlbi_get_node (void *ctx, const char *name)
	Get a stream from the current OpenVLBI context. More...
DLL_EXPORT int	vlbi_has_node (void *ctx, const char *name)
	Determine if a node is present into the current OpenVLBI context. More...
DLL_EXPORT void	vlbi_del_node (vlbi_context ctx, const char *name)
	Remove a stream from the current OpenVLBI context. More...
DLL_EXPORT int	vlbi_get_nodes (void *ctx, vlbi_node **nodes)
	List all nodes of the current OpenVLBI context. More...
DLL_EXPORT void	vlbi_add_node_from_fits (void *ctx, char *filename, const char *name, int geo)
	Add a node from a 2d image fits file. More...
DLL_EXPORT void	vlbi_add_nodes_from_sdfits (void *ctx, char *filename, const char *name, int geo)
	Add nodes from each row of a single dish fits -SDFITS- file. More...
DLL_EXPORT void	vlbi_filter_lp_node (void *ctx, const char *name, const char *node, double radians)
	Apply a low pass filter on the node buffer. More...
DLL_EXPORT void	vlbi_filter_hp_node (void *ctx, const char *name, const char *node, double radians)
	Apply a high pass filter on the node buffer. More...
DLL_EXPORT void	vlbi_filter_bp_node (void *ctx, const char *name, const char *node, double lo_radians, double hi_radians)
	Apply a band pass filter on the node buffer. More...
DLL_EXPORT void	vlbi_filter_br_node (void *ctx, const char *name, const char *node, double lo_radians, double hi_radians)
	Apply a band reject filter on the node buffer. More...

Detailed Description

Function Documentation

vlbi_add_node()

DLL_EXPORT void vlbi_add_node	(	vlbi_context	ctx,
		dsp_stream_p	Stream,
		const char *	name,
		int	geographic_coordinates
	)

Parameters

ctx	The OpenVLBI context
Stream	The OpenDSP stream to add
name	A friendly name of this stream
geographic_coordinates	Whether to use geographic coordinates

vlbi_add_node_from_fits()

DLL_EXPORT void vlbi_add_node_from_fits	(	void *	ctx,
		char *	filename,
		const char *	name,
		int	geo
	)

Parameters

ctx	The OpenVLBI context
filename	The filename of the fits to read
name	The name of the newly created model
geo	whether to consider the file coordinates as geographic or relative to the context station

vlbi_add_nodes_from_sdfits()

DLL_EXPORT void vlbi_add_nodes_from_sdfits	(	void *	ctx,
		char *	filename,
		const char *	name,
		int	geo
	)

Parameters

ctx	The OpenVLBI context
filename	The filename of the sdfits to read
name	The name of the newly created model
geo	whether to consider the file coordinates as geographic or relative to the context station

vlbi_copy_node()

DLL_EXPORT void vlbi_copy_node	(	void *	ctx,
		const char *	name,
		const char *	node
	)

Parameters

ctx	The OpenVLBI context
name	The node name of the copy
node	The name of the node to copy

vlbi_del_node()

DLL_EXPORT void vlbi_del_node	(	vlbi_context	ctx,
		const char *	name
	)

Parameters

ctx	The OpenVLBI context
name	The friendly name of the stream to be removed

vlbi_filter_bp_node()

DLL_EXPORT void vlbi_filter_bp_node	(	void *	ctx,
		const char *	name,
		const char *	node,
		double	lo_radians,
		double	hi_radians
	)

Parameters

ctx	The OpenVLBI context
name	The name of the filtered new node
node	The name of the original node
lo_radians	The low cut frequency in radians, where PI corresponds to a second
hi_radians	The hi cut frequency in radians, where PI corresponds to a second

vlbi_filter_br_node()

DLL_EXPORT void vlbi_filter_br_node	(	void *	ctx,
		const char *	name,
		const char *	node,
		double	lo_radians,
		double	hi_radians
	)

Parameters

ctx	The OpenVLBI context
name	The name of the filtered new node
node	The name of the original node
lo_radians	The low cut frequency in radians, where PI corresponds to a second
hi_radians	The hi cut frequency in radians, where PI corresponds to a second

vlbi_filter_hp_node()

DLL_EXPORT void vlbi_filter_hp_node	(	void *	ctx,
		const char *	name,
		const char *	node,
		double	radians
	)

Parameters

ctx	The OpenVLBI context
name	The name of the filtered new node
node	The name of the original node
radians	The cutoff frequency in radians, where PI corresponds to a second

vlbi_filter_lp_node()

DLL_EXPORT void vlbi_filter_lp_node	(	void *	ctx,
		const char *	name,
		const char *	node,
		double	radians
	)

Parameters

ctx	The OpenVLBI context
name	The name of the filtered new node
node	The name of the original node
radians	The cutoff frequency in radians, where PI corresponds to a second

vlbi_get_node()

DLL_EXPORT dsp_stream_p vlbi_get_node	(	void *	ctx,
		const char *	name
	)

Parameters

ctx	The OpenVLBI context
name	The name of this stream

Returns

The OpenDSP stream representing this node

vlbi_get_nodes()

DLL_EXPORT int vlbi_get_nodes	(	void *	ctx,
		vlbi_node **	nodes
	)

Parameters

ctx	The OpenVLBI context
nodes	The nodes array pointer to be filled

Returns

the number of nodes in the current context

vlbi_has_node()

DLL_EXPORT int vlbi_has_node	(	void *	ctx,
		const char *	name
	)

Parameters

ctx	The OpenVLBI context
name	The name of the node to check

Returns

Non-zero if the node is present in the passed context