-/* PSPP - computes sample statistics.
+/* PSPP - a program for statistical analysis.
Copyright (C) 2004 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <libpspp/compiler.h>
-
-struct dataset
+/* Start a new vector called NAME */
+void
+chart_vector_start (struct chart *ch, const char *name)
{
- int n_data;
- const char *label;
-};
+ if ( ! ch )
+ return ;
+ pl_savestate_r (ch->lp);
-#define DATASETS 2
+ pl_colorname_r (ch->lp, data_colour [ch->n_datasets % N_CHART_COLOURS]);
-static const struct dataset dataset[DATASETS] =
- {
- { 13, "male"},
- { 11, "female"},
- };
+ ch->n_datasets++;
+ ch->dataset = xrealloc (ch->dataset, ch->n_datasets * sizeof (*ch->dataset));
+ ch->dataset[ch->n_datasets - 1] = strdup (name);
+}
/* Plot a data point */
void
-chart_datum(struct chart *ch, int dataset UNUSED, double x, double y)
+chart_datum (struct chart *ch, int dataset UNUSED, double x, double y)
{
if ( ! ch )
return ;
}
}
+void
+chart_vector_end (struct chart *ch)
+{
+ pl_endpath_r (ch->lp);
+ pl_colorname_r (ch->lp, "black");
+ ch->in_path = false;
+ pl_restorestate_r (ch->lp);
+}
+
+/* Plot a data point */
+void
+chart_vector (struct chart *ch, double x, double y)
+{
+ if ( ! ch )
+ return ;
+
+ {
+ const double x_pos =
+ (x - ch->x_min) * ch->abscissa_scale + ch->data_left ;
+
+ const double y_pos =
+ (y - ch->y_min) * ch->ordinate_scale + ch->data_bottom ;
+
+ if ( ch->in_path)
+ pl_fcont_r (ch->lp, x_pos, y_pos);
+ else
+ {
+ pl_fmove_r (ch->lp, x_pos, y_pos);
+ ch->in_path = true;
+ }
+ }
+}
+
+
+
/* Draw a line with slope SLOPE and intercept INTERCEPT.
between the points limit1 and limit2.
If lim_dim is CHART_DIM_Y then the limit{1,2} are on the
y axis otherwise the x axis
*/
void
-chart_line(struct chart *ch, double slope, double intercept,
+chart_line (struct chart *ch, double slope, double intercept,
double limit1, double limit2, enum CHART_DIM lim_dim)
{
double x1, y1;
pl_fline_r(ch->lp, x1, y1, x2, y2);
pl_restorestate_r(ch->lp);
-
}