A new pre-processor variable has been defined: MSVC so the pragmas for VC++ are now properly enabled for msvc only. An improper include for MSWIN has been removed.

The WIN32 pre-processor variable has been renamed in MSWIN since this is more logical on Win64 (and to avoid potential conflicts). Some headers have been cleaned up in the process (in Timer.h/.cc). A new method has been moved from Config to FileUtils: isAbsolutePath. Some extra features (support for offset in hours) added to NetCDFIO.

The Winstral spatial interpolation algorithm is getting into shape: all three modes of operation have been implemented and tested and it is now properly documented. A new data generator has been created that computes a relative humidity from either a dew point temperature or a specific humidity.  Adding a "check_attribute" to libncpp.

Fixing a bug preventing compiling the tests, added a new constructor to Array2D that takes a specific layer out of an Array3D and a new method in Array3D to insert a 2D layer at a specific depth

One more optimization for IDW (when only one station is available) and the Winstral algorithm only changes cells with TA<=0

My previous optimizations had introduced a bug in SimpleDEMWindInterpolate, this has been fixed. The optimizations are actually now done at another location. The (Ryan, 1977) wind direction interpolation has been properly checked, fixed and documented.

Yet another step for the MINGW date handling bug workaround... And an optimization: precipitation grids will be directly filled with zeroes if no station sees any precipitation (to avoid complicated algorithms in Winstral, etc)

Small clean up for the specific/relative humidity conversions. Small code clean up (mostly indentation) for NetCDF.

NetCDFIO: Now all the wrappers for libnetcdf have been put into a separate namespace called ncpp in separate files.

NetCDFIO: Full implementation of the STRICTFORMAT config option. By default all parameters, also those not conforming with the format are read and written, the user though may force conformity by setting the STRICTFORMAT parameter to TRUE in the io.ini [Input] and [Output] sections

NetCDFIO: Introducing the STRICTFORMAT config parameter for the io.ini when using the NetCDFIO plugin to read or write meteo data. This paramater is by default set to false meaning that meteo parameters that are not present in the CNRM standard for NetCDF files will also be read and written. Setting STRICTFROMAT to true means that only parameters defined in the CNRM standard will be regarded when reading and writing meteo data, all other meteo parameters will be ignored.

A few extra checks have been added for grid rescaling. Some indentation has been fixed and lots of variables made const. The documentation is now linked to the general plugins documentation.

More refinements to the Winstral spatial interpolation: it is now possible to provide a reference station to take the wind direction from, or to provide a fixed wind direction. 

Fixed a stupid bug in my previous commit and added the possibility to provide a fallback constant when using the CST spatial interpolation:
RH::algorithms = Cst
RH::cst                = 0.3

This would behave as before, except that if no data at all would be available at a given time step, then the value 0.3 would be taken to fill the grid.

Since IOUtils was getting bigger and bigger, all the methods dealing with low level file handling have been moved into a new file, FilesUtils. It remains in the IOUtils namespace. One method has been moved to Date. A few includes have been cleaned up.

The example io.ini file was missing some new changes. The Winstral algorithm had a bug when operating on dems with holes (nodata). It now takes its wind direction as argument (the base algorithm also has to be provided).

some unecessary lines have been removed and a new target has been added: cxxflags. This only takes compiling options from the cxxflags env variable and is therefore suitable for packagers who need to force their own compiling flags.

NetCDFIO: Further cleanup, readStationData revamped, added a method to check dimensions of a variable

NetCDFIO: Thanks to heavenly input by Mathias the 2D grid reading and writing is numerically consistent now. The only tradeoff is that precision of the cellsize is limited to 1cm, otherwise numerical instabilities may occur. 

NetCDFIO: deleting existing files before creating a new one when writing meteo data, everything else is too complicated for the moment