Workaround and test script for legendflex legend text

src/matlab2tikz.m

@@ -3598,7 +3598,6 @@ case guitypes()
     if isempty(type) || strcmpi(type,'hggroup')
         type = get(h,'ShapeType'); % Undocumented property valid from 2008a
     end
-
     switch type
         case 'text'
             if is3D
@@ -3642,13 +3641,17 @@ case guitypes()
                 set(h,'Units',units,'Position',oldPos)
             end
     end
+    % manually add vertical offset (determined empirically). Otherwise text
+    % from legendflex legends is put too high
+    pos_corr = pos;
+    pos_corr(2) = pos(2)-6; % works for font size 10
+
     posString = cell(1,npos);
     for ii = 1:npos
-        posString{ii} = formatDim(pos(ii), fmtUnit);
+        posString{ii} = formatDim(pos_corr(ii), fmtUnit);
     end
-
     posString = sprintf('(%s%s)',type,join(m2t,posString,','));
-    m2t = disableClippingInCurrentAxes(m2t, pos);
+    m2t = disableClippingInCurrentAxes(m2t, pos_corr);
 
 end
 % ==============================================================================

test/legendflex_test/figure_test.tex

@@ -0,0 +1,19 @@
+\documentclass{article}
+
+\usepackage{pgfplots}
+\pgfplotsset{compat=newest}
+%% the following commands are needed for some matlab2tikz features
+\usetikzlibrary{plotmarks}
+\usetikzlibrary{arrows.meta}
+\usepgfplotslibrary{patchplots}
+\usepackage{grffile}
+\usepackage{amsmath}
+
+%% you may also want the following commands
+%\pgfplotsset{plot coordinates/math parser=false}
+%\newlength\figureheight
+%\newlength\figurewidth
+
+\begin{document}
+	\input{figure.tex}
+\end{document}

test/legendflex_test/legendflex_bug_minexample.m

@@ -0,0 +1,41 @@
+% Basic legendflex example from the legendflex repository
+% https://github.com/kakearney/legendflex-pkg
+% Then save figure with matlab2tikz
+
+clear
+clc
+close all
+
+figure('color','w');
+
+linespec = [repmat({'r';'b';'g';'c';'m'},2,1), ...
+[repmat({'-'}, 5, 1); repmat({'--'}, 5, 1)]];
+
+
+x = [0 10];
+y = (1:10)'*x;
+lbl = cellstr(num2str((1:10)'));
+
+% hln = NaN(1,2);
+hln(:,2) = plot(x, y);
+set(hln(:,2), {'color','linestyle'}, linespec);
+
+[hl(2).leg, hl(2).obj, hl(2).hout, hl(2).mout] = ...
+legendflex(hln(1:5,2), lbl(1:5), ...
+'anchor', {'nw','nw'}, ...
+'buffer', [5 -5], ...
+'fontsize',10, ... % has to match document. Otherwise box not wide enough
+'xscale',0.5, ...
+'title', 'Color');
+[hl(3).leg, hl(3).obj, hl(3).hout, hl(3).mout] = ...
+legendflex(hln([1 6],2), {'thing 1', 'thing 2'}, ...
+'ref', hl(2).leg, ...
+'anchor', {'ne','nw'}, ...
+'buffer', [5 0], ...
+'FontName', 'Times New Roman', ...
+'fontsize', 10, ...
+'title', 'Line');
+
+% Save figure
+matlab2tikz('figure.tex', ...
+  'strictFontSize', false);