Changes between Version 67 and Version 68 of Grass7/VectorLib/OGRInterface

Timestamp:

Nov 14, 2011, 9:39:21 AM (12 years ago)

Author:

martinl

Comment:

--

Grass7/VectorLib/OGRInterface

@@ -101 +101 @@
 === Optimalization ===
 
+Most of GRASS modules are designed to access features randomly which is basically quick for GRASS native vector data, but very very slow when accessing features via OGR library, see example bellow
+
+{{{
+#!cpp
+    nlines = Vect_get_num_lines(&In);
+    for (line = 1; line <= nlines; line++) {
+        Vect_read_line(&In, Points, Cats, line);
+    }
+}}}
+
 '''Simple test of rendering speed'''