#define _(msgid) gettext (msgid)
void
-xrchart_draw_roc (const struct chart_item *chart_item, cairo_t *cr,
+xrchart_draw_roc (const struct chart *chart, cairo_t *cr,
struct xrchart_geometry *geom)
{
- const struct roc_chart *rc = to_roc_chart (chart_item);
+ const struct roc_chart *rc = to_roc_chart (chart);
size_t i;
xrchart_write_title (cr, geom, _("ROC Curve"));