1 files changed, 34 insertions, 0 deletions
diff --git a/lib/axlsx/drawing/cat_axis_data.rb b/lib/axlsx/drawing/cat_axis_data.rb
new file mode 100644
index 00000000..83dfa56e
--- /dev/null
+++ b/lib/axlsx/drawing/cat_axis_data.rb
@@ -0,0 +1,34 @@
+module Axlsx
+  # The CatAxisData class serializes the category axis data for a chart
+  class CatAxisData < SimpleTypedList
+
+    # Create a new CatAxisData object
+    # @param [Array, SimpleTypedList] data the data for this category axis. This can be a simple array or a simple typed list of cells.
+    def initialize(data=[])
+      super Object
+      @list.concat data if data.is_a?(Array)
+    end
+
+    # Serializes the category axis data
+    # @param [Nokogiri::XML::Builder] xml The document builder instance this objects xml will be added to.
+    # @return [String]
+    def to_xml(xml)
+      xml.send('c:cat') {
+        xml.send('c:strRef') {
+          xml.send('c:f', Axlsx::cell_range(@list))
+          xml.send('c:strCache') {
+            xml.send('c:ptCount', :val=>size)
+            each_with_index do |item, index|
+              v = item.is_a?(Cell) ? item.value : item
+              xml.send('c:pt', :idx=>index) {
+                xml.send('c:v', v)
+              }                          
+            end
+          }
+        }
+      }
+    end
+
+  end
+  
+end