histogram.rb in ctioga2-0.11

- old
+ new

@@ -226,11 +226,16 @@
             #
             # Later, we'll have to use a conversion function for X
             # values (which means in particular that they won't be
             # positioned at the exact X value, but that's already the
             # case anyway).
-            width = (x_values.max - x_values.min)/(x_values.size - 1)
+            width = (x_values.max - x_values.min)/(x_values.size - 1).to_f
+            if width.nan? || width == 0.0
+              # Only 1 X value, we use a width of 1
+              # ?? 
+              width = 0.8
+            end
 
             # Available width
             aw = width - intra_sep - inter_sep
             if aw < 0
               error { "Too much padding around the histograms leading to negative size. Try using smaller intra-sep or inter-sep. Ignoring them for now" }  
@@ -248,10 +253,10 @@
               c[:width] = iw
               c[:x_offset] = offset
               offset += iw
               next unless col
               if col.first.histogram_style.intra_sep
-                offset += h.histogram_style.intra_sep.to_figure(t, :x)
+                offset += col.first.histogram_style.intra_sep.to_figure(t, :x)
               end
               for h in col
                 cache[h] = c
               end
             end