Add description for ST_StartPoint

orbisgis · Feb 5, 2014 · e447d9b · e447d9b
1 parent 9515f5a
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diff --git a/docs/dev/ST_EndPoint.md b/docs/dev/ST_EndPoint.md
@@ -38,4 +38,5 @@ SELECT ST_EndPoint('MULTILINESTRING((1 1, 3 2, 3 1),
 
 ##### See also
 
+* [`ST_StartPoint`](../ST_StartPoint)
 * <a href="https://github.com/irstv/H2GIS/blob/master/h2spatial/src/main/java/org/h2gis/h2spatial/internal/function/spatial/properties/ST_EndPoint.java" target="_blank">Source code</a>
diff --git a/docs/dev/ST_StartPoint.md b/docs/dev/ST_StartPoint.md
@@ -2,28 +2,35 @@
 layout: docs
 title: ST_StartPoint
 category: h2spatial/properties
-description: 
+description: Return the first point of a <code>LINESTRING</code>
 prev_section: ST_SRID
 next_section: ST_X
 permalink: /docs/dev/ST_StartPoint/
 ---
 
-### Signatures
+### Signature
 
 {% highlight mysql %}
+POINT ST_StartPoint(GEOMETRY geom);
 {% endhighlight %}
 
 ### Description
 
-
+Returns the first `POINT` of a `LINESTRING` as a `POINT`.
+If the input parameter is not a `LINESTRING` this function returns `null`.
 
 {% include sfs-1-2-1.html %}
 
-### Examples
+### Example
 
 {% highlight mysql %}
+SELECT ST_StartPoint('LINESTRING(1 2, 5 3, 2 6)');
+-- Answer: POINT(1 2)
 {% endhighlight %}
 
+<img class="displayed" src="../ST_StartPoint.png"/>
+
 ##### See also
 
+* [`ST_EndPoint`](../ST_EndPoint)
 * <a href="https://github.com/irstv/H2GIS/blob/master/h2spatial/src/main/java/org/h2gis/h2spatial/internal/function/spatial/properties/ST_StartPoint.java" target="_blank">Source code</a>
diff --git a/docs/dev/ST_StartPoint.png b/docs/dev/ST_StartPoint.png