gog_chart_map_2D_derivative_to_view ()

double
gog_chart_map_2D_derivative_to_view (GogChartMap *map,
                                     double deriv,
                                     double x,
                                     double y);

Converts a 2D slope from data space to canvas space. It is only implemented for xy maps.

gog_chart_map_2D_to_view ()

void
gog_chart_map_2D_to_view (GogChartMap *map,
                          double x,
                          double y,
                          double *u,
                          double *v);

Converts a 2D coordinate from data space to canvas space.

gog_chart_map_free ()

void
gog_chart_map_free (GogChartMap *map);

Frees map object.

gog_chart_map_get_axis_map ()

GogAxisMap *
gog_chart_map_get_axis_map (GogChartMap *map,
                            unsigned int index);

Convenience function which returns one of the associated axis_map.

Valid values are in range [0..2].

gog_chart_map_get_polar_parms ()

GogChartMapPolarData *
gog_chart_map_get_polar_parms (GogChartMap *map);

Convenience function for retrieving data related to polar plot layout.

gog_chart_map_is_valid ()

gboolean
gog_chart_map_is_valid (GogChartMap *map);

Tests if map was correctly initializied, i.e. if all associated axis_map are valid (see gog_axis_map_is_valid() ).

given to gog_chart_map_new.

gog_chart_map_make_close_path ()

GOPath *
gog_chart_map_make_close_path (GogChartMap *map,
                               double const *x,
                               double const *y,
                               int n_points,
                               GogSeriesFillType fill_type);

gog_chart_map_make_path ()

GOPath *
gog_chart_map_make_path (GogChartMap *map,
                         double const *x,
                         double const *y,
                         int n_points,
                         GOLineInterpolation interpolation,
                         gboolean skip_invalid,
                         gpointer data);

gog_chart_map_new ()

GogChartMap *
gog_chart_map_new (GogChart *chart,
                   GogViewAllocation const *area,
                   GogAxis *axis0,
                   GogAxis *axis1,
                   GogAxis *axis2,
                   gboolean fill_area);

Creates a new GogChartMap, used for conversion from data space to canvas space.

gog_chart_map_view_to_2D ()

void
gog_chart_map_view_to_2D (GogChartMap *map,
                          double x,
                          double y,
                          double *u,
                          double *v);

Converts a 2D coordinate from canvas space to data space.

GogChartMap

typedef struct _GogChartMap GogChartMap;

GogChartMapPolarData

typedef struct {
	double cx, cy;
	double rx, ry;
	double th0, th1;
} GogChartMapPolarData;