Code tagging and some usefull methods for debugging and the begining of a true accumulator for time series (for any sampling rates).

Added a soft min/max filter to Meteo2DInterpolator. It is explicitly called for RH grids and HNW grids to make sure values stay in the range of [0;1] (for RH) or [0; inf) (for HNW).

Overall all include statements within in the library have been replaced by angle brackets, the default install path for the include file is $CMAKE_INSTALL_DIR/include/meteoio, the meteoio libraries (static and shared) will be installed in $CMAKE_INSTALL_DIR/lib per default.

The plugins will be installed in the subdirectory $CMAKE_INSTALL_DIR/lib/meteoio/plugins

Some commented out code has been removed. The check for the projection of the stations compared to the projection used for the DEM has been re-activated (it MUST be active!). The first implementation of a custom grid "interpolation" method has been done (issue 50) but can not be used: we need access to an IOHandler in order to properly read grids provided by the user. Otherwise, the rest of the code for it has been written and tested.

Then, the remaining namespace issues with doxygen have been fixed, by enclosing the full class implementation in the namespace (as seen for the libstdc++). This removes all these irritating issues. But the popc version has been broken by the change (as seen in LegacyIO).

Changed the name of the Date_IO class to Date. In case of namespace conflicts, just use mio::Date to reference the MeteoIO Date class.

The physical filter algorithms (as defined in libinterpol2D) have seen their interface modified so they all follow the same logic (for the order and naming of the arguments).

The documentation has been cleaned up (the warnings have been fixed, some missing items added).

The arrays and grids now have a "print" method that prints their content to screen (usefull for debugging). The Coords class also has this method (as required to print the grid objects).

A "using namespace std" was found in ImisIO.h and has been removed. A few comments/indentation/clean up have been done (including in the doc/examples)

The quality rating sorting was broken and has been fixed. The RH interpolation method was not properly working and has been fixed (using the wrong vector for input data). The naming of the number of stations to be used has been made more consistent between the various algorithms and an improved information output has been added.

Changed interface of InterpolationAlgorithm::calculate, it now is a void function, Within the implementation of the algorithms exceptions are thrown instead of returning false.

GeotopIO: higher precision on the output of the meta data.

Kicked out all legacy code for the spatial interpolation - cleaned up libinterpol2D.* and Meteo2DInterpolator.* - in Coords.cc there was an ambigous if condition lacking a few brackets. Added comments to illustrate the algorithms in InterpolationAlgorithms.cc

The new interpolations interface with all algorithms that used to reside within libinterpol2D exclusively. Every algorithm is an own class derived from InterpolationAlgorithm abstract base class. An AlgorithmFactory instantiates the required algorithm within class Meteo2DInterpolator. The user needs to configured which algorithms to be used within the section [Interpolations2D] in the io.ini:

[Interpolations2D]
TA::algorithms = cst cst_lapse idw_lapse
TA::cst_lapse = -0.008

libinterpol1D has a new function for the calculation of arithmetic means. all of libinterpol2D is static. the rest will be thrown out in the coming days.

A few issues have been fixed in Coords: the copyProj method had a bug, the distance method now uses cartesian calculation if both projections are equal, a new getProj() method is now available (but it should be rarely needed). The GridxDObject::gridify method now correctly handles "NULL" projection and the Meteo2DInterpolator makes sure that all projections agree before doing the interpolations.

The new Coords object is now used by all grids (Grid2DObject, Grid3DObject, DEMObject) as well as by all plugins (but checking proper operation was not possible for GSNIO because of missing libraries on my system...). The documentation has been updated as well as the code examples. A few extra methods have been added when usage has shown the need/convenience of having them (specially for standardazing some processing called by the plugins). A few small bugs have been fixed (possibility of not updating or improperly updating the coordinates in some rare cases).

The proper marshalling for Grid3DObject has been implemented (it was more or less a dummy method until now). One bug has been fixed for Proj4 support. The code of most of the plugins has been cleaned up in order to get rid of the few remaining "using namespace" in header files. 

The class Stationdata now properly uses the new Coords class. All usual dependencies have been fixed (A3DIO.cc) but not (yet) the optional plugins. The Coords class has been modified so that it computes the matching coordinates as soon as possible instead of the previous implementation that was delaying it as much as possible (thus making "const Coords..." impossible).

The includes have been cleaned up (compilation was failing because of multiple "using namespace" in header files) and all "using namespace" have been removed from header files (please don't put any of these back!!). The doxygen comments has been updated.

A bug was preventing RH interpolations from working (the TA grid was initialized to size 0, and therefore the safety checks were later on stopping the interpolation of RH because the TA grid was of the wrong size). 

A "sanitize" method has been added to DEMObject so that all points that have an elevation but no slope/azimuth/normals/curvature see their elevation set to nodata (so that testing the elevation of a point is enough to guarantee that all information is available). The caller has therefore to decide if he prefers potentially losing a few points to guarantee a more consistent DEM or not...

The parallelization was lagging behind, so this has been fixed: One internal variable was not serialized in DEMObject, there was no serialization at all in Meteo2DInterpolator and some marshalling methods had to be written (in marshall_meteoio). The serialization of Meteo2DInterpolator should be tested however!

The marshalling code has been cleaned up and some missing "std::" added in FilterAlgorithms (doxygen was complaining).

void interpolate(const MeteoData::Parameters& meteoparam, Grid2DObject& result);

The new Meteo2DInterpolator class parses the ConfigReader object passed to it and stores all possible algorithms for each MeteoData variable (user configured). In the next step the user configured algorithms shall be invoked and a quality estimator chooses the most appropiate of the algorithms to interpolate the 2D grid for a given meteo parameter.

Adjustments needed to be made to the ConfigReader class (function findKeys) and a few comments have been added to MeteoFilter for more clarity of the ConfgReader parsing process.

A new slope computation algorithm has bee added: CARD It computes the slope using Corripio and then discretizes the azimuth along 8 cardinal directions and the slope by degrees. This should be all that GEOtop needs for its drainage direction (then simply calling a dem.update("CARDINAL")).

The copyright notices have been put in place in all files (headers and cc) with proper attribution of copyright.

The documentation has been improved, specially fixing issue 22. Warning messages of doxygen have been fixed. An example subdirectory has been created in /doc and contains (currently) 2 examples of code using MeteoIO.

A new define (DEBUG_ARITHM) has been added that activates the non-catching of arithmetic exceptions. This is specially required for parallel execution when the code from the library might execute in a process different from the caller (thus not having the required flag set on the cpu for its process). This is enabled/disabled in the Makefile.in (or the Makefile for the end user). 

The std:: namespace declaration has been added to a lots of places, making the "use namespace std" usage irrelevant (and thus suppressed). Other namespaces that were called with a "use" have been found not to be used anymore and therefore also removed.

Several bugs in the doxygen comments have been fixed: typo (misplaced space), comments not matching the declaration anymore, etc Doxygen now executes without warnings.

Updated MeteoIO to use HNW for new precipitations instead of NSWC. All mentions of nswc have been removed, including in funciton names and comments.

Indentation fixed in IOHandler.cc

A parameter has been added to DEMObject::update in order to specify which algorithm to use. It can either take a member from a specifc enum or a string like "HICK" or "CORRIPIO".

The isSameGeolocalization method has been added to Grid2DObject in order to allow comparing the geolocalization attributes of two grids. It does not compare the xllcorner/yllcorner parameters since these might have been tweaked for convenience. The code checking the match between lat/long and xll/yll has been commented out since this prevents the correct operations when using a local grid. This method (checkCoordinates) will have to be completely redesigned.

The ISWR and LWR methods have been uncommented for the Meteo2DInterpolator. 

The (very dirty) hack that would have interpreted the grid coordinates differently depending on their value (as lat/long or swiss coordinates) in ARCIO and GRASSIO has been removed (this is now replaced by the much cleaner projection class). If the COORDPARAM key is missing in the io.ini file, it is quietly ignored instead of throwing an exception.

The meteoio_demo program has been updated to reflect these changes

The spatial interpolation class has been modified so that it works with Grid2DObjects instead of Array2D. This makes room for being able (one day) to work with a DEM bigger than the requested grid... (yes, this would be so sexy!)

Warnings have been silenced in GrassIO.cc

First fix for bringing the popc version up to date. Some warnings in IOUtils and Meteo2DInterpolators have been fixed (non explicit cast).

Ok, this is the correct implementation of what I tried to do in the previous commit... Now, the Meteo2DInterpolator can take either Array2D<double> or Grid2DObjects as tables to fill. The overloading of the Write2DGrid has therefore been suppressed: since Grid2DObjects are geography-friendly, they should be used in our applications instead of Array2D (that should be reserved for internal implementation of objects).

So, this is mostly reverting to the code before the last commit, with a few extra lines of code to do the magic...

A minor initialization bug was fixed in DEMObject. The new wind interpolation method has been disabled by default (not safe to use before making sure that it does not create unphysical behavior). A minor optimization has been implemented in libinterpol2D: if the DEM min and max altitudes are know, the median elevation is now used as a reference elevation for reprojections.

The doxygen comments have been fixed and enhanced.

The meteoio_demo program has been updated to fully use the DEMObject.

* Changed nomenclature in CArray2D<T> to reflect STL conventions:
	GetSize() renamed to size()
	Create() renamed to resize()
	Destroy() renamed to clear()

* Changed all function arguments from int to "unsigned int" in CArray2D<T>
* Had to change Grid2DObject and Meteo2DInterpolator to reflect the changes 

The new wind interpolation method that uses the local terrain's curvature has been merged. It comes from (Liston-Elder, 2006) and has been implemented by Gael Rosset (HES-SO) duri8ng his Bachelor internship. It still has to be tested in order to see how it performs compared to measurements...

The DEMObject has been tweaked a little more (fixing some issues with constructors), as well as some code tagging. 

The spatial interpolations now use a DEMObject for the dem.

The code for optional reading of wind directions has been activated in A3DIO. Some dead, commented code has been removed. 

The first version of the required code for fancier wind interpolation has been added. This highlights the need for a redesign of the structure of the spatial interpolations interface.

Nothing special, just some re-indentation in order to make the code lines clear and easy to run and understand.

Namespaces are now used (namespace IOUtils) so that only 1 nodata is defined and used. A few new fields have been added to Meteodata (namely, hs and rswr). 

The demo, test program has been updated so that it works with the current version of the library (but ImisIO is not usable yet).

The documentation can now be built from the Makefile (that also contains a help section). By default, the BOSCUNG and IMIS plugins are disabled.

The necessary skeleton has been added to Meteo2DInterpolator and libinterpol2D so that the wind interpolation model can easily be implemented.

The whole library has been given its new name and several classes have been renamed in order to better match their purpose. The Makefile has been modified accordingly.