Merge pull request #21 from pvlib/xspacing

rename x_spacing to row_spacing, and rename y_spacing to column_spacing

Author: cwhanse

Examples/05 - VerySimpleFixedPVC2_with_electrical_layout_v3.pvc

@@ -416,8 +416,8 @@
 				<technique profile="PVCollada-2.0">
 					<!-- rack tag -->
 					<pv:rack>
-						<pv:x_spacing>20</pv:x_spacing>
-						<pv:y_spacing>20</pv:y_spacing>
+						<pv:row_spacing>20</pv:row_spacing>
+						<pv:column_spacing>20</pv:column_spacing>
 						<pv:module_rows>1</pv:module_rows>
 						<pv:module_columns>4</pv:module_columns>
 						<pv:module_orientation>portrait</pv:module_orientation>

schema/pvcollada_schema_0.1.xsd

@@ -805,14 +805,14 @@ xmlns:collada="http://www.collada.org/2008/03/COLLADASchema">
     </xs:annotation>
     <xs:complexType>
       <xs:sequence>
-        <xs:element name="x_spacing" type="collada:float_type">
+        <xs:element name="row_spacing" type="collada:float_type">
           <xs:annotation>
-            <xs:documentation>Spacing between modules on the X axis (in unit from the unit tag)</xs:documentation>
+            <xs:documentation>Spacing between modules in the row direction</xs:documentation>
           </xs:annotation>
         </xs:element>
-        <xs:element name="y_spacing" type="collada:float_type">
+        <xs:element name="column_spacing" type="collada:float_type">
           <xs:annotation>
-            <xs:documentation>Spacing between modules on the Y axis (in unit from the unit tag)</xs:documentation>
+            <xs:documentation>Spacing between modules in the column direction</xs:documentation>
           </xs:annotation>
         </xs:element>
         <xs:element name="module_rows" type="xs:int">