Why can't I add title to plot in R2013a?

Question

Mohammed 2016-10-12

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评论： Mohammed 2016-10-13

I haven't used MATLAB in a while but last time I tried, I didn't have any issues with plotting function. Now when I am plotting and adding a title to the legend, apparently as shown below, It won't show up! Any suggestions toward fixing this issue would be greatly appreciated?!

clear, clc, clf, cla reset, format shortg, 
  g_compress = CompressExtract('CompressExtract.csv',2,1000);
  g_table = g_compress(:,[1,12]);
  g_Bins = g_table(:,1);
  g_RSCP = g_table(:,2);
  plot(g_Bins,g_RSCP,'-','Color',[0.5, 0, 0], ...
       'LineWidth',1,'LineSmoothing','on')
  lgd = legend('Example','Location','S'); 
  title(lgd,'My Legend Title')
  axis([0 1000 -100 -40]), grid on

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Preethi 2016-10-13

hi,

do you want to title the plot or legend?

Mohammed 2016-10-13

I want to title the legend please?! Just like shown below

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Answer 1

Ganesh Hegade 2016-10-13

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编辑：Walter Roberson 2016-10-13

在 MATLAB Online 中打开

Hi,

Normally for title

title(str)
title(str,Name,Value)
title(ax,___)

but the value of

lgd = legend('Example','Location','S');

is not a string or axis details.

I think you should just use 'legend(your specifications)' to locate the legend details on the graph and then add the title name.

Thanks.

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Walter Roberson 2016-10-13

编辑：Walter Roberson 2016-10-13

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In R2014a and before, legend() returned an axes handle, and you were able to title() against that handle.

In R2014b and newer, it turns out that you can set a Title property:

http://www.mathworks.com/matlabcentral/answers/304014-unable-to-add-title-to-legend#comment_393200

lgd.Title.String = 'My Legend Title';

In R2014a and before, there is the question of whether the default position is within the portion being displayed, and similar concerns. The way legends were constructed in R2014a and before was not expecting a title to be added.

Mohammed 2016-10-13

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Thanks to both of you for your explanation. Here is what I improved;

clear, clc, clf, cla reset, format shortg, 
  g_compress = CompressExtract('CompressExtract.csv',2,1000);
  g_table = g_compress(:,[1,12]);
  g_Bins = g_table(:,1);
  g_RSCP = g_table(:,2);
  plot(g_Bins,g_RSCP,'-','Color',[0.5, 0, 0], ...
       'LineWidth',1,'LineSmoothing','on')
  lgd = legend('Example','Location','S');
  lgd_title = get(gca,'title');
  set(lgd_title, 'string', 'LegendTitle','FontWeight', 'Bold') 
  title(lgd,'My Legend Title')
  axis([0 1000 -100 -40])