Flowline simplification process

[changliao1025]

The simplification is required, however this can be done in either Python or in C++.
There are both pros and cons.
Reason to pick Python:
Easy to test and implement
Should be fast enough because information is limited
There are some existing C++ to Python conversion tools.
Reason to not pick Python:
Not sure about the STL alternative.
Global scale high resolution computational demand.

Reason to pick C++:
There are existing algorithm built;
performance;
natural C++ STL library
Reason not to pick C++:
Not ideal in long run.

[changliao1025]

This operation can also be applied on shapefile or json file.