2012-11-20  Patrick Eriksson  <patrick.eriksson@chalmers.se>

            * arts-2-1-383

            * src/montecarlo.cc (mcPathTraceGeneralTEST): A warning is now
            given if the optical thickness of the path step exceeeds 4.

            * src/m_montecarlo.cc (MCGeneral): New rejects the "path trace" if
            g=0, with a warning to out0. That is, this trace does not
            contribute to I_sum.



git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8024 aaf1aab0-4228-0410-ad68-8dceda47f409
2012-11-20  Patrick Eriksson  <patrick.eriksson@chalmers.se>

            * arts-2-1-383

            * For documentation purposes, before changing MC, the reference
            values for the MC tests were checked. For two of the tests, the
            reference I values were found to be too high, with about 2.5K
            (precision of test calculations about 0.35K). This change in
            reference value could have been caused in arts-2-1-347, when the
            cloudbox was enlarged to cover all non-zero pnd_field. The sign of
            the change in I is consistent with more particles along the path.

            But third test had already OK value. Changed without comment here?
            No time to investigate this further.

            The changes:

            * controlfiles/artscomponents/montecarlo/
            TestMonteCarloGeneralGaussian.arts:
            I: 201.0 -> 198.8
            Q: 7.6 -> 8.0

            * controlfiles/artscomponents/montecarlo/TestMonteCarloGeneral.arts:
              I: 201.8 -> 199.1
              Q: 7.6 (no change)

              * controlfiles/artscomponents/montecarlo/TestRteCalcMC.arts: I:
              199.5 K (Not changed, as the significant difference to new
              calculations. And this quite close to the new values above.)



git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8025 aaf1aab0-4228-0410-ad68-8dceda47f409
2012-11-20  Patrick Eriksson  <patrick.eriksson@chalmers.se>

            * arts-2-1-385

            * Version number here in ChangeLog was not updated.

            * controlfiles/artscomponents/montecarlo/
            TestMonteCarloGeneralGaussian.arts: A stupid last minute typo!



git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8026 aaf1aab0-4228-0410-ad68-8dceda47f409
2012-11-20  Patrick Eriksson  <patrick.eriksson@chalmers.se>

            * arts-2-1-386

            * New version mcPathTraceGeneral now activated. That is, MCGeneral
            now considers ppath_step_agenda, and gives warnings if tau of any
            path step is higher than 4.

            In addition, other MC methods moved to mc_NotUSed.cc. These
            methods could be activated on demand (then to be revised and
            tested).

            * src/workspace.cc: mc_z_field_is_1D removed.

            * src/montecarlo.cc (cum_l_stepCalc,):
            * src/montecarlo.cc (iwp_cloud_opt_pathCalc):
            * src/montecarlo.cc (mcPathTraceIPA):
            * src/m_montecarlo.cc (mc_IWP_cloud_opt_pathCalc):
            * src/m_montecarlo.cc (MCIPA):
            * src/m_montecarlo.cc (pha_matExtractManually): All moved to
            mc_NotUsed.

            * src/montecarlo.cc (mcPathTraceGeneral): "Test version" has now
            replaced old version.

            * controlfiles/artscomponents/montecarlo/
              TestMonteCarloGeneralGaussian.arts:
              *
              controlfiles/artscomponents/montecarlo/TestMonteCarloGeneral.arts:
              ppath_lmax set to 3km (needed to avoid warnings about tau > 4).
              Setting of mc_z_field_is_1D removed.

              New reference values:

              * controlfiles/artscomponents/montecarlo/
              TestMonteCarloGeneralGaussian.arts:
              I: 198.8 -> 198.6
              Q: 8.0 -> 7.6

              *
                controlfiles/artscomponents/montecarlo/TestMonteCarloGeneral.arts:
                I: 199.1 -> 198.3
                Q: 7.6 -> 7.8

                * controlfiles/artscomponents/montecarlo/TestRteCalcMC.arts: I:
                I: 199.5 -> 199.4



git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8027 aaf1aab0-4228-0410-ad68-8dceda47f409