Abort if BTD selected for RZ, and unsupported field/particle varnames (#3074)

* abort if BTD selected for RZ, and unsupported field/particle varnames

* add doc

* particle fields to plot not supported for BTD

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* WARPX_ALWAYS_ASSERT_WITH_MESSAGE

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* use unified txt message syntax for abort

* fix logic in assert

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: RevathiJambunathan

Docs/source/usage/parameters.rst

@@ -1988,7 +1988,7 @@ In-situ capabilities can be used by turning on Sensei or Ascent (provided they a
 
 * ``<diag_name>.fields_to_plot`` (list of `strings`, optional)
     Fields written to output.
-    Possible scalar fields: ``part_per_cell`` ``rho`` ``phi`` ``F`` ``part_per_grid`` ``divE`` ``divB`` and ``rho_<species_name>``, where ``<species_name>`` must match the name of one of the available particle species. Note that ``phi`` will only be written out when do_electrostatic==labframe.
+    Possible scalar fields: ``part_per_cell`` ``rho`` ``phi`` ``F`` ``part_per_grid`` ``divE`` ``divB`` and ``rho_<species_name>``, where ``<species_name>`` must match the name of one of the available particle species. Note that ``phi`` will only be written out when do_electrostatic==labframe. Also, note that for ``<diag_name>.diag_type = BackTransformed``, the only scalar field currently supported is ``rho``.
     Possible vector field components in Cartesian geometry: ``Ex`` ``Ey`` ``Ez`` ``Bx`` ``By`` ``Bz`` ``jx`` ``jy`` ``jz``.
     Possible vector field components in RZ geometry: ``Er`` ``Et`` ``Ez`` ``Br`` ``Bt`` ``Bz`` ``jr`` ``jt`` ``jz``.
     Default is ``<diag_name>.fields_to_plot = Ex Ey Ez Bx By Bz jx jy jz``,
@@ -2006,6 +2006,7 @@ In-situ capabilities can be used by turning on Sensei or Ascent (provided they a
    Note that these averages do not respect the particle shape factor, and instead use nearest-grid point interpolation.
    Default is none.
    Parser functions for these field names are specified by ``<diag_name>.particle_fields.<field_name>(x,y,z,ux,uy,uz)``.
+   Also, note that this option is only available for ``<diag_name>.diag_type = Full``
 
 * ``<diag_name>.particle_fields_species`` (list of `strings`, optional)
          Species for which to calculate ``particle_fields_to_plot``.
@@ -2115,7 +2116,7 @@ In-situ capabilities can be used by turning on Sensei or Ascent (provided they a
 BackTransformed Diagnostics (with support for Plotfile/openPMD output)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-``BackTransformed`` diag type are used when running a simulation in a boosted frame, to reconstruct output data to the lab frame. This option can be set using ``<diag_name>.diag_type = BackTransformed``. Additional options for this diagnostic include:
+``BackTransformed`` diag type are used when running a simulation in a boosted frame, to reconstruct output data to the lab frame. This option can be set using ``<diag_name>.diag_type = BackTransformed``. Note that this diagnostic is not currently supported for RZ.  Additional options for this diagnostic include:
 
 * ``<diag_name>.num_snapshots_lab`` (`integer`)
     Only used when ``<diag_name>.diag_type`` is ``BackTransformed``.

Source/Diagnostics/BTDiagnostics.cpp

@@ -170,6 +170,20 @@ BTDiagnostics::ReadParameters ()
         if(m_max_box_size < m_buffer_size) m_max_box_size = m_buffer_size;
     }
 
+
+    amrex::Vector< std::string > BTD_varnames_supported = {"Ex", "Ey", "Ez",
+                                                           "Bx", "By", "Bz",
+                                                           "jx", "jy", "jz", "rho"};
+
+    for (const auto& var : m_varnames) {
+        WARPX_ALWAYS_ASSERT_WITH_MESSAGE( (WarpXUtilStr::is_in(BTD_varnames_supported, var )), "Input error: field variable " + var + " in " + m_diag_name
+        + ".fields_to_plot is not supported for BackTransformed diagnostics. Currently supported field variables for BackTransformed diagnostics include Ex, Ey, Ez, Bx, By, Bz, jx, jy, jz, and rho");
+    }
+
+    bool particle_fields_to_plot_specified = pp_diag_name.queryarr("particle_fields_to_plot", m_pfield_varnames);
+    WARPX_ALWAYS_ASSERT_WITH_MESSAGE(!particle_fields_to_plot_specified, "particle_fields_to_plot is currently not supported for BackTransformed Diagnostics");
+
+
 }
 
 bool

Source/Diagnostics/BackTransformedDiagnostic.cpp

@@ -10,6 +10,7 @@
 #include "Parallelization/WarpXCommUtil.H"
 #include "Utils/WarpXConst.H"
 #include "Utils/WarpXProfilerWrapper.H"
+#include "Utils/TextMsg.H"
 #include "WarpX.H"
 
 #include <AMReX_Array4.H>
@@ -577,7 +578,9 @@ BackTransformedDiagnostic (Real zmin_lab, Real zmax_lab, Real v_window_lab,
       m_particle_slice_width_lab_(particle_slice_width_lab)
 {
 
-
+#ifdef WARPX_DIM_RZ
+    amrex::Abort(Utils::TextMsg::Err("BackTransformed diagnostics is currently not supported with RZ"));
+#endif
     WARPX_PROFILE("BackTransformedDiagnostic::BackTransformedDiagnostic");
 
     AMREX_ALWAYS_ASSERT(WarpX::do_back_transformed_fields or

Source/Diagnostics/MultiDiagnostics.cpp

@@ -2,6 +2,7 @@
 
 #include "Diagnostics/BTDiagnostics.H"
 #include "Diagnostics/FullDiagnostics.H"
+#include "Utils/TextMsg.H"
 
 #include <AMReX_ParmParse.H>
 #include <AMReX.H>
@@ -22,7 +23,11 @@ MultiDiagnostics::MultiDiagnostics ()
         if ( diags_types[i] == DiagTypes::Full ){
             alldiags[i] = std::make_unique<FullDiagnostics>(i, diags_names[i]);
         } else if ( diags_types[i] == DiagTypes::BackTransformed ){
+#ifdef WARPX_DIM_RZ
+            amrex::Abort(Utils::TextMsg::Err("BackTransformed diagnostics is currently not supported for RZ"));
+#else
             alldiags[i] = std::make_unique<BTDiagnostics>(i, diags_names[i]);
+#endif
         } else {
             amrex::Abort("Unknown diagnostic type");
         }