Added some documentation to GRIBIO, fixed the documentation of FilterStdDev, improved the regex for the sun test, significantly improved code coverage by adding lots of different filters and interpolations (both 1D and 2D). The meteo files have been tweaked in order to contain precipitation for the reference time step.

All the filters using windows have been modified so they use the window specifications (start, end) instead of a vector of pointers. The FilterWindAvg was not properly handling nodata, this has been fixed. By the way, when using a reasonnably large buffer size, the new filter window management is actually slightly faster than the old one (1%). 

The handling of "soft" is now different: soft ONLY applies to the window specifications. Before, a soft filter would leave values that could not get a window untouched while non-soft would force them to nodata. Now, all values that can not get a window are left unchanged, while the window centering can change according to "soft".

A bug has been found in the processing of the variance: we were using a naive formula that is ill-fitted to signals showing small variations around a large mean. This lead to catastrophic cancellation and negative values... This has been replaced by a (slower) compensated formula (that works in two passes). The standard deviation filter has been fixed. 

The Tukey filter has been brought back into the new infrastructure and should now be usable. However it is not suitable to snow heights: in such a case, the standard deviation is too small (or even zero) and the signal might show some sudden variations (like in the case of a snow fall) that would therefore be falsely rejected. This filter seems much better suited to wind speeds that exhibit some constant background noise, thus a non-null standard deviation.

The rate filter can now take 2 arguments: in such a case, the first one is the minimum rate and the second the maximum rate. This would allow to define a descent rate different from the climb rate.

Several error messages have been improved in A3DIO and general plugin loading.

Finally, two small tools for working with smet files have been contributed, one allowing transparent loading of smet files in xmgrace (smet2agr). And the example io.ini has been fixed (it had been broken and was not working with the examples anymore)

Documentation update. A new section "how to build your io.ini configuration file" has been added to the end user section of the documentation.

The Standard Deviation filter has been moved to the new structure. Some optimizations for windowed_filters will have to be implemented at some point... (see issue 132 for some ideas)

The full support for timezones has been brought back. This fixes issue 71. The SMET, SMET, IMIS, BORMA plugins have been validated. Geotop should be validtaed if an input data set is available. A new class will have to be implemented to represent time periods. This is currently only a typedef pointing to the Date class, but a specific class would be welcomed.

GSN has been fixed for some changes on the web service, but does not retrieve the correct timestamps (is this a GSN issue?). The GSN compilation has been improved: the warnings related to GSOAP have been removed. 

A new long wave radiaiton model using cloudiness as input has been added (Omstedt, 1990). 

Further improvements to the new filtering infrastructure: windowed filters now inherit from the class WindowedFilter, giving them an easy handle on getting the correct window for every data point. FilterMedianAvg and FilterMeanAvg now fully implemented (soft/not soft, left/center/right windowing). Sample io.ini:

[Filters]
TA::filter1     = mean_avg
TA::arg1        = soft right 5 3600
TA::filter2     = min_max
TA::arg2        = soft 282 286 280 290

RH::filter1     = median_avg
RH::arg1        = center 8 3600

New filter system rolled out with currently two filters up and running: min_max and mean_avg (without the soft option, only left or right centering). The new filter system is built upon processing blocks that take a vector<MeteoData> as input and return a processed vector<MeteoData>. The individual filters are stacked in a ProcessingStack where they are invoked sequentially.

MeteoData now has an extra public member variable: StationData meta. It will hold the meta information of the measurment instead of dragging along a second vector<StationData> alongside the vector<MeteoData> everywhere.

This has huge implications: the IOInterface has been rewritten, subsequently changes need to be propagated into all plugins and all modules dealing with meta data.

The new filtering and resampling framework. Filtering/Processing and Resampling have been separated from each other, the Resampling is now done with the class Meteo1DInterpolator which utilizes the static algorithms within ResamplingAlgorithms. The filtering remains a task of class MeteoFilter. The calling of the resampling and filtering as well as the data selection is now based in the facade class MeteoProcessor. MeteoProcessor::processData function calls the filtering algorithms, then passes the filtered data to the resampling algorithms and finally runs a "check only" filtering pass.

The filtering system underwent some changes in order to simplify the tasks at hand, the interface has changed.

The RateFilter is currently disfunctional, needs to be reimplemented.

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

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 license information has been added: LPGLv3 headers in all header files, license texts as well as a Linux Software Map entry file.

The installation procedure has been added to cmake configuration files (similar to the autotools)

MeteoFilter operates on static filter algorithms which are defined in FilterAlgorithms.*
FilterProperties is a small helper class to declare properties of an Algorithm (e.g. how many data points it requires, ...)
The new MeteoFilter system is utilized by class BufferedIOHandler.

The old filter system is removed from Makefiles/CMake and the SVN directory.
Legacy MeteoIO classes Meteo1DResampler and MeteoBuffer, which were solely required by the old filter system are also removed.