-/* PSPP - computes sample statistics.
- Copyright (C) 2004 Free Software Foundation, Inc.
- Written by John Darrington <john@darrington.wattle.id.au>
+/* PSPP - a program for statistical analysis.
+ Copyright (C) 2004, 2009 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/str.h>
-#include <libpspp/alloc.h>
+#include <libpspp/assertion.h>
#include <output/manager.h>
#include <output/output.h>
+#include "xalloc.h"
-const char *data_colour[] = {
- "brown",
- "red",
- "orange",
- "yellow",
- "green",
- "blue",
- "violet",
- "grey",
- "pink"
-};
+const char *const data_colour[N_CHART_COLOURS] =
+ {
+ "brown",
+ "red",
+ "orange",
+ "yellow",
+ "green",
+ "blue",
+ "violet",
+ "grey",
+ "pink"
+ };
If label is non zero, then print it at the tick mark
*/
void
-draw_tick(struct chart *chart,
- enum tick_orientation orientation,
- double position,
+draw_tick(struct chart *chart,
+ enum tick_orientation orientation,
+ double position,
const char *label, ...)
{
const int tickSize = 10;
pl_move_r(chart->lp, chart->data_left, chart->data_bottom);
- if ( orientation == TICK_ABSCISSA )
+ if ( orientation == TICK_ABSCISSA )
pl_flinerel_r(chart->lp, position, 0, position, -tickSize);
- else if (orientation == TICK_ORDINATE )
+ else if (orientation == TICK_ORDINATE )
pl_flinerel_r(chart->lp, 0, position, -tickSize, position);
else
- assert(0);
+ NOT_REACHED ();
if ( label ) {
char buf[10];
va_start(ap,label);
vsnprintf(buf,10,label,ap);
- if ( orientation == TICK_ABSCISSA )
+ if ( orientation == TICK_ABSCISSA )
pl_alabel_r(chart->lp, 'c','t', buf);
- else if (orientation == TICK_ORDINATE )
+ else if (orientation == TICK_ORDINATE )
{
if ( fabs(position) < DBL_EPSILON )
pl_moverel_r(chart->lp, 0, 10);
va_end(ap);
}
-
+
pl_restorestate_r(chart->lp);
}
/* Write the title on a chart*/
-void
+void
chart_write_title(struct chart *chart, const char *title, ...)
{
va_list ap;
char buf[100];
- if ( ! chart )
+ if ( ! chart )
return ;
pl_savestate_r(chart->lp);
/* Set the scale for the abscissa */
-void
+void
chart_write_xscale(struct chart *ch, double min, double max, int ticks)
{
double x;
- const double tick_interval =
+ const double tick_interval =
chart_rounded_tick( (max - min) / (double) ticks);
assert ( ch );
- ch->x_max = ceil( max / tick_interval ) * tick_interval ;
+ ch->x_max = ceil( max / tick_interval ) * tick_interval ;
ch->x_min = floor ( min / tick_interval ) * tick_interval ;
- ch->abscissa_scale = fabs(ch->data_right - ch->data_left) /
+ ch->abscissa_scale = fabs(ch->data_right - ch->data_left) /
fabs(ch->x_max - ch->x_min);
for(x = ch->x_min ; x <= ch->x_max; x += tick_interval )
{
- draw_tick (ch, TICK_ABSCISSA,
+ draw_tick (ch, TICK_ABSCISSA,
(x - ch->x_min) * ch->abscissa_scale, "%g", x);
}
/* Set the scale for the ordinate */
-void
+void
chart_write_yscale(struct chart *ch, double smin, double smax, int ticks)
{
double y;
- const double tick_interval =
+ const double tick_interval =
chart_rounded_tick( (smax - smin) / (double) ticks);
- if ( !ch )
+ if ( !ch )
return;
- ch->y_max = ceil ( smax / tick_interval ) * tick_interval ;
+ ch->y_max = ceil ( smax / tick_interval ) * tick_interval ;
ch->y_min = floor ( smin / tick_interval ) * tick_interval ;
- ch->ordinate_scale =
+ ch->ordinate_scale =
fabs(ch->data_top - ch->data_bottom) / fabs(ch->y_max - ch->y_min) ;
for(y = ch->y_min ; y <= ch->y_max; y += tick_interval )
{
- draw_tick (ch, TICK_ORDINATE,
+ draw_tick (ch, TICK_ORDINATE,
(y - ch->y_min) * ch->ordinate_scale, "%g", y);
}
}
/* Write the abscissa label */
-void
+void
chart_write_xlabel(struct chart *ch, const char *label)
{
- if ( ! ch )
+ if ( ! ch )
return ;
pl_savestate_r(ch->lp);
/* Write the ordinate label */
-void
+void
chart_write_ylabel(struct chart *ch, const char *label)
{
- if ( ! ch )
+ if ( ! ch )
return ;
pl_savestate_r(ch->lp);
pl_restorestate_r(ch->lp);
}
+
+
+void
+chart_write_legend (struct chart *ch)
+{
+ int i;
+ const int vstep = ch->font_size * 2;
+ const int xpad = 10;
+ const int ypad = 10;
+ const int swatch = 20;
+ const int legend_top = ch->data_top;
+ const int legend_bottom = legend_top -
+ (vstep * ch->n_datasets + 2 * ypad );
+
+ if ( ! ch )
+ return ;
+
+ pl_savestate_r (ch->lp);
+
+ pl_box_r (ch->lp, ch->legend_left, legend_top,
+ ch->legend_right - xpad, legend_bottom);
+
+ for (i = 0 ; i < ch->n_datasets ; ++i )
+ {
+ const int ypos = vstep * (i + 1);
+ const int xpos = ch->legend_left + xpad;
+ pl_move_r (ch->lp, xpos, legend_top - ypos);
+
+ pl_savestate_r(ch->lp);
+ pl_fillcolorname_r (ch->lp, data_colour [ i % N_CHART_COLOURS]);
+
+ pl_pentype_r (ch->lp, 1);
+ pl_filltype_r (ch->lp, 1);
+ pl_boxrel_r (ch->lp, 0, 0, swatch, swatch);
+
+
+ pl_moverel_r (ch->lp, swatch, 0);
+ pl_alabel_r (ch->lp, 0, 0, ch->dataset[i]);
+
+ pl_restorestate_r (ch->lp);
+ }
+
+ pl_restorestate_r (ch->lp);
+}
projects / pspp-builds.git / blobdiff