Transmission Line: Add measure unit to Rho constant

Fixes https://gitlab.com/kicad/code/kicad/-/issues/19312

pcb_calculator/calculator_panels/panel_transline.cpp

@@ -53,6 +53,7 @@ PANEL_TRANSLINE::PANEL_TRANSLINE( wxWindow* parent, wxWindowID id, const wxPoint
         m_transline_list.push_back( new TRANSLINE_IDENT( tltype_list[ii] ) );
 
     m_EpsilonR_label->SetLabel( wxT( "εr" ) );
+    m_substrate_prm3_labelUnit->SetLabel( wxT( "Ω ∙ m" ) );
 }
 
 

pcb_calculator/calculator_panels/panel_transline_base.cpp

@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////
-// C++ code generated with wxFormBuilder (version 3.10.1-0-g8feb16b)
+// C++ code generated with wxFormBuilder (version 4.2.1-0-g80c4cb6-dirty)
 // http://www.wxformbuilder.org/
 //
 // PLEASE DO *NOT* EDIT THIS FILE!
@@ -103,8 +103,9 @@ PANEL_TRANSLINE_BASE::PANEL_TRANSLINE_BASE( wxWindow* parent, wxWindowID id, con
 
 	fgSizerSubstPrms->Add( bSizer443, 1, wxEXPAND, 5 );
 
-
-	fgSizerSubstPrms->Add( 0, 0, 1, wxEXPAND, 5 );
+	m_substrate_prm3_labelUnit = new wxStaticText( sbSubstrateBoxSizer->GetStaticBox(), wxID_ANY, _("ohm * m"), wxDefaultPosition, wxDefaultSize, 0 );
+	m_substrate_prm3_labelUnit->Wrap( -1 );
+	fgSizerSubstPrms->Add( m_substrate_prm3_labelUnit, 0, wxALL, 5 );
 
 	m_substrate_prm4_label = new wxStaticText( sbSubstrateBoxSizer->GetStaticBox(), wxID_ANY, _("H:"), wxDefaultPosition, wxDefaultSize, 0 );
 	m_substrate_prm4_label->Wrap( -1 );

pcb_calculator/calculator_panels/panel_transline_base.h

@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////
-// C++ code generated with wxFormBuilder (version 3.10.1-0-g8feb16b)
+// C++ code generated with wxFormBuilder (version 4.2.1-0-g80c4cb6-dirty)
 // http://www.wxformbuilder.org/
 //
 // PLEASE DO *NOT* EDIT THIS FILE!
@@ -39,7 +39,6 @@ class UNIT_SELECTOR_RESISTOR;
 
 ///////////////////////////////////////////////////////////////////////////
 
-
 ///////////////////////////////////////////////////////////////////////////////
 /// Class PANEL_TRANSLINE_BASE
 ///////////////////////////////////////////////////////////////////////////////
@@ -59,6 +58,7 @@ class PANEL_TRANSLINE_BASE : public CALCULATOR_PANEL
 		wxStaticText* m_Rho_label;
 		wxTextCtrl* m_Value_Rho;
 		wxButton* m_button_Rho;
+		wxStaticText* m_substrate_prm3_labelUnit;
 		wxStaticText* m_substrate_prm4_label;
 		wxTextCtrl* m_Substrate_prm4_Value;
 		UNIT_SELECTOR_LEN* m_SubsPrm4_choiceUnit;

pcb_calculator/transline_ident.cpp

@@ -132,11 +132,11 @@ TRANSLINE_IDENT::TRANSLINE_IDENT( enum TRANSLINE_TYPE_ID aType )
                                    "Rough", _( "Roughness" ),
                                    _( "Conductor roughness" ), 0.0, true ) );
         AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MUR_PRM,
-                                   "mu Rel S", wxString::Format( wxT( "μ(%s)" ),
+                                   "mu Rel S", wxString::Format( wxT( "μr (%s)" ),
                                                                  _( "substrate" ) ),
                                    _( "Relative permeability (mu) of substrate" ), 1, false ) );
         AddPrm( new TRANSLINE_PRM( PRM_TYPE_SUBS, MURC_PRM,
-                                   "mu Rel C", wxString::Format( wxT( "μ(%s)" ),
+                                   "mu Rel C", wxString::Format( wxT( "μr (%s)" ),
                                                                  _( "conductor" ) ),
                                    _( "Relative permeability (mu) of conductor" ), 1,
                                    false ) );