1 files changed, 25 insertions, 0 deletions
diff --git a/lib/axlsx/drawing/ax_data_source.rb b/lib/axlsx/drawing/ax_data_source.rb
new file mode 100644
index 00000000..5bbfd55b
--- /dev/null
+++ b/lib/axlsx/drawing/ax_data_source.rb
@@ -0,0 +1,25 @@
+module Axlsx
+  # An axis data source that can contain referenced or literal strings or numbers
+  # @note only string data types are supported - mainly because we have not implemented a chart type that requires a numerical axis value
+  class AxDataSource < NumDataSource
+
+    # allowed element tag names
+    # @return [Array]
+    def self.allowed_tag_names
+      [:xVal, :cat]
+    end
+
+    # creates a new NumDataSource object
+    # @option options [Array] data An array of Cells or Numeric objects
+    # @option options [Symbol] tag_name see tag_name
+    def initialize(options={})
+      @tag_name = :cat
+      @data_type = StrData
+      @ref_tag_name = :strRef
+      super(options)
+    end
+
+  end
+
+end
+