X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Foutput%2Fcharts%2Fscatterplot-cairo.c;h=17307497c783f7b2c4d5bea00634170d955f05b9;hb=6132656980af2e8527e3e83c8418846ef4c478c7;hp=2c01429c4e9d74529c3243f45179290a9ab756f9;hpb=a24846d816e431b579bd5dfc3a80e234da24199c;p=pspp

diff --git a/src/output/charts/scatterplot-cairo.c b/src/output/charts/scatterplot-cairo.c
index 2c01429c4e..17307497c7 100644
--- a/src/output/charts/scatterplot-cairo.c
+++ b/src/output/charts/scatterplot-cairo.c
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 2014 Free Software Foundation, Inc.
+   Copyright (C) 2014, 2015 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
@@ -28,12 +28,13 @@
 #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,
+xrchart_draw_scatterplot (const struct chart *chart, cairo_t *cr,
 			  struct xrchart_geometry *geom)
 {
-  const struct scatterplot_chart *spc = to_scatterplot_chart (chart_item);
+  const struct scatterplot_chart *spc = to_scatterplot_chart (chart);
   struct casereader *data;
   struct ccase *c;
   /* While reading the cases, a list with categories of the byvar is build */
@@ -45,15 +46,17 @@ 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);
-  xrchart_write_title (cr, geom, _("Scatterplot %s"), chart_item->title);
-  xrchart_write_xlabel (cr, geom, var_to_string(spc->xvar));
-  xrchart_write_ylabel (cr, geom, var_to_string(spc->yvar));
+  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->title);
+  xrchart_write_xlabel (cr, geom, spc->xlabel);
+  xrchart_write_ylabel (cr, geom, spc->ylabel);
 
   cairo_save (cr);
   data = casereader_clone (spc->data);
@@ -61,7 +64,7 @@ xrchart_draw_scatterplot (const struct chart_item *chart_item, cairo_t *cr,
     {
       if (spc->byvar)
 	{
-	  const union value *val = case_data (c,spc->byvar);
+	  const union value *val = case_data_idx (c,SP_IDX_BY);
 	  for(i=0;i<n_catvals && !value_equal (&catvals[i],val,byvar_width);i++);
 	  if (i == n_catvals) /* No entry found */
 	    {
@@ -87,16 +90,19 @@ xrchart_draw_scatterplot (const struct chart_item *chart_item, cairo_t *cr,
 		  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 (c, spc->xvar)->f,
-		     case_data (c, spc->yvar)->f);
+		     case_data_idx (c, SP_IDX_X)->f,
+		     case_data_idx (c, SP_IDX_Y)->f);
     }
   casereader_destroy (data);
   cairo_restore (cr);