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ImplementationOf3DRasterFlowLine

-              v10
+              v11
 === Week 9 ===
 I rewrote the rest of the Python implementation (added flowaccumulation and on-the-fly gradient computation). I tested it against Python implementation and when computing gradient, it still differs a little bit so I will test more. Next week I will add more code documentation and try to write some tests. Also, I would like to implement integrating flowlines in both directions.
+=== Week 10 ===
+I didn't have much time this week, so I just wrote more documentation and updated manual page with description and example. I started to write tests, I created a c test module to access the module functions and then I wrote the python test file testing interpolation. However, this broke installing the extension so I removed some changes from svn.
+I also added the option to compute flowlines in both directions at once.
+The differences in gradient computation from last week are resolved, it was partially caused by Rast3d_location2coord implementation, which was changed and fixed by Soeren.
+Next week I would like to try different tile settings to see if there is any difference and then try to implement !r3.gradient module based on the gradient function in !r3.flow.