A wrong commit on doc/examples/io.ini has been reverted. A new undercatch filter has been implemented, following (Hamon, 1973). I would not recommend using it for the moment, though. 

The issue 222 was actually more complex than it seemed: the behavior of an uncaught exception is actually not specified by the standard, so there is nothing that could be doneon MeteoIO's side: instead, each application is invited to properly wrap its calls in try/catch blocks, or wrap its whole main in try/catch. The code examples and examples have been modified to show several such possibilities.

Cleaner definition of epsilon in MeteoData. Finally, working 2D_interpolations test (with reference files and relying on numdiff).

Oups, fixed a few mistakes in io.ini: PNG should not be enabled by default (since this is an optional plugin) and one PNG key was spelled wrongly...

Fixed the PNG world file (so that we return the coordinates of the center of the cell) and updated the examples so that they perform correctly with the latest version

The LIDW interpolation was not safe when less stations were available than the requested number of neighbors. Since this interpolation method is still quite experiemental (the bilinear lapse rate can lead to very wrong results), it has been removed from the example io.ini.

Finally, after learning that DLLs are not libraries but runtimes (at least for cmake), the Windows packaging works. All the generated files are back in lib, and the example Makefile and io.ini have been modified accordingly.

Fixed some warnings that appeared with the previous commit. A missing method has now been implemented in Array3D. The example io.ini is now up to date with the code structure (ie: looking for the plugins in the proper subdirectory)

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 This has been replaced by a (slower) compensated formula (that works in two passes).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)

The SNIO and SMETIO plugins now use METEOPATH for both inputs and outputs. This is more consistent with other plugins and usage.

Some unused variables/methods have been removed from BufferedIOHandler (namely, the "buffer_always" functionality).

A first implementation of fileExists() and readDirectory() for Windows has been written. This has not yet been tested (even for compilation) since it requires Visual C++. This moves forward to address issues 143 and 144

The autotools' Makefile.in that is necessary for the popc version has been updated. The io.ini and data_converter.cc have been improved (some errors/obsolete keys were in io.ini)

Several bugs have been fixed in Coords: the setEPSG was not working, the altitude was not displayed with the << operator and the formatting of decimal_to_dms was broken in its handling of seconds...

The documentation for the resampling has been expanded and several other modules' documentation have been updated so their structure is built along the same lines. 

An error message in IOHandler (when failing to load a plugin) was not clear and has been changed.

Several bugs in SMEIO have been fixed (improper column names mapping, improper handling of easting/northing, unclear error message).

The example data set has been tagged as GMT+1 and the meteo_reading and 2D_interpolations modified accordingly (so the argument read on the command line is assumed to be in GMT+1 too)

The EPSG get and set methods have been added to Coords. The "<<" operator has been redefined for ConfigReader (this is convenient for debugging). The SMETIO plugin has been updated (so that it supports EPSG codes and also to change some column names and improve the foutput formatting). Some documentation has been added and the example data set has been replaced by a data set suitable for the whole Switzerland and in SMET format.

The example io.ini has been cleaned up (some keys were unnecesary). The necessary changes for POPC have been made

A new plugin has been introduced: PGMIO that reads/writes PGM graphic files as 2D grids. (using the template plugin, it took less than 30 minutes for implementing the write2Dgrid!!)

More documentation has been updated/added, the template plugin has been fixed for some issues, the example io.ini shows more plugins usage.

Removed the STATION key from the io.ini. the readStationData function of the plugins relies on the METEO key for choosing the data source.

The STATION keyword in the io.ini tells MeteoIO where to look for station meta data. Mostly this will be exactly the same plugin as for the METEO keyword.

The example io.ini has been brought up to date, a new example showing how to perform spatial interpolations has been added.

A better example of DEM usage has been prepared: it uses a 1000m resolution DEM of the whole of Switzerland (that is, with holes in the dem) and valid coordinates are now much easier to guess...

The MapProj class has been renamed in Coords. It now contains the coordinates (lat,long) and (xcoord, ycoord) and should therefore be used as a storage and conversion class. The necessary changes have been made to the rest of the code so it uses this class, but it still does NOT use it as a storage of coordinates (which will have to be done in the future). This addressed partially issue 35.

The examples have been improved: some misakes have been fixed, a Makefile has been added as well as an example io.ini and some input files (dem, meteo data). This means that the example code can be built and run!