X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Foutput%2Fcharts%2Fboxplot-cairo.c;h=8448b2d6c411d41431a91a99cf561700071d2a01;hb=dfb0db0d34a420f994125c3f2702dfec6119f845;hp=a35b277b8cfa97154399b7a4f9018acfa07c7886;hpb=aad0ae4913ecd01ccc954f8828623ad5da35cd1b;p=pspp

diff --git a/src/output/charts/boxplot-cairo.c b/src/output/charts/boxplot-cairo.c
index a35b277b8c..8448b2d6c4 100644
--- a/src/output/charts/boxplot-cairo.c
+++ b/src/output/charts/boxplot-cairo.c
@@ -57,17 +57,17 @@ boxplot_draw_box (cairo_t *cr, const struct xrchart_geometry *geom,
 
   const double box_right = box_centre + box_width / 2.0;
 
-  double box_bottom ;
-  double box_top ;
-  double bottom_whisker ;
-  double top_whisker ;
+  double box_bottom;
+  double box_top;
+  double bottom_whisker;
+  double top_whisker;
 
   box_whisker_whiskers (bw, whisker);
   box_whisker_hinges (bw, hinge);
 
-  box_bottom = geom->axis[SCALE_ORDINATE].data_min + (hinge[0] - geom->axis[SCALE_ORDINATE].min ) * geom->axis[SCALE_ORDINATE].scale;
+  box_bottom = geom->axis[SCALE_ORDINATE].data_min + (hinge[0] - geom->axis[SCALE_ORDINATE].min) * geom->axis[SCALE_ORDINATE].scale;
 
-  box_top = geom->axis[SCALE_ORDINATE].data_min + (hinge[2] - geom->axis[SCALE_ORDINATE].min ) * geom->axis[SCALE_ORDINATE].scale;
+  box_top = geom->axis[SCALE_ORDINATE].data_min + (hinge[2] - geom->axis[SCALE_ORDINATE].min) * geom->axis[SCALE_ORDINATE].scale;
 
   bottom_whisker = geom->axis[SCALE_ORDINATE].data_min + (whisker[0] - geom->axis[SCALE_ORDINATE].min) *
     geom->axis[SCALE_ORDINATE].scale;
@@ -107,20 +107,29 @@ boxplot_draw_box (cairo_t *cr, const struct xrchart_geometry *geom,
   cairo_stroke (cr);
 
   /* Draw top whisker */
-  cairo_move_to (cr, box_left, top_whisker);
-  cairo_line_to (cr, box_right, top_whisker);
-  cairo_stroke (cr);
+  if (! isnan (top_whisker))
+    {
+      cairo_move_to (cr, box_left, top_whisker);
+      cairo_line_to (cr, box_right, top_whisker);
+      cairo_stroke (cr);
+    }
 
-  /* Draw centre line.
-     (bottom half) */
-  cairo_move_to (cr, box_centre, bottom_whisker);
-  cairo_line_to (cr, box_centre, box_bottom);
-  cairo_stroke (cr);
+  /* Draw centre line. */
+  if (! isnan (bottom_whisker) && ! isnan (box_bottom))
+    {
+      /* (bottom half) */
+      cairo_move_to (cr, box_centre, bottom_whisker);
+      cairo_line_to (cr, box_centre, box_bottom);
+      cairo_stroke (cr);
+    }
 
-  /* (top half) */
-  cairo_move_to (cr, box_centre, top_whisker);
-  cairo_line_to (cr, box_centre, box_top);
-  cairo_stroke (cr);
+  if (! isnan (top_whisker) && ! isnan (box_top))
+    {
+      /* (top half) */
+      cairo_move_to (cr, box_centre, top_whisker);
+      cairo_line_to (cr, box_centre, box_top);
+      cairo_stroke (cr);
+    }
 
   outliers = box_whisker_outliers (bw);
   for (ll = ll_head (outliers);
@@ -136,15 +145,17 @@ boxplot_draw_box (cairo_t *cr, const struct xrchart_geometry *geom,
 }
 
 void
-xrchart_draw_boxplot (const struct chart_item *chart_item, cairo_t *cr,
+xrchart_draw_boxplot (const struct chart *chart, cairo_t *cr,
                       struct xrchart_geometry *geom)
 {
-  const struct boxplot *boxplot = to_boxplot (chart_item);
+  const struct boxplot *boxplot = to_boxplot (chart);
   double box_width;
   size_t i;
 
-  xrchart_write_yscale (cr, geom, boxplot->y_min, boxplot->y_max);
-  xrchart_write_title (cr, geom, "%s", chart_item->title);
+  if (! xrchart_write_yscale (cr, geom, boxplot->y_min, boxplot->y_max))
+    return;
+
+  xrchart_write_title (cr, geom, "%s", chart->title);
 
   box_width = (geom->axis[SCALE_ABSCISSA].data_max - geom->axis[SCALE_ABSCISSA].data_min) / boxplot->n_boxes / 2.0;
   for (i = 0; i < boxplot->n_boxes; i++)