#include "gettext.h"
#define _(msgid) gettext (msgid)
+static const struct xrchart_colour black = {0,0,0};
void
xrchart_draw_scatterplot (const struct chart_item *chart_item, cairo_t *cr,
int byvar_width = 0;
int i = 0;
const struct xrchart_colour *colour;
-
+
if (spc->byvar)
byvar_width = var_get_width (spc->byvar);
- xrchart_write_xscale (cr, geom, spc->x_min, spc->x_max);
- xrchart_write_yscale (cr, geom, spc->y_min, spc->y_max);
+ if (! xrchart_write_xscale (cr, geom, spc->x_min, spc->x_max))
+ return;
+ if (! xrchart_write_yscale (cr, geom, spc->y_min, spc->y_max))
+ return;
xrchart_write_title (cr, geom, _("Scatterplot %s"), chart_item->title);
xrchart_write_xlabel (cr, geom, spc->xlabel);
xrchart_write_ylabel (cr, geom, spc->ylabel);
i--;
}
}
+ colour = &data_colour[i % XRCHART_N_COLOURS];
}
- colour = &data_colour[i % XRCHART_N_COLOURS];
+ else
+ colour = &black;
+
cairo_set_source_rgb (cr,
colour->red / 255.0,
colour->green / 255.0,
colour->blue / 255.0);
-
+
xrchart_datum (cr, geom, 0,
case_data_idx (c, SP_IDX_X)->f,
case_data_idx (c, SP_IDX_Y)->f);