Why is MATLAB 2015A placing the text box in the wrong location?

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Brad
Brad 2015-5-28
评论： Walter Roberson 2015-5-30
My group just upgraded to MATLAB 2015A. I've been running some previously developed scripts to ensure compatibility. In the process of doing so, I ran across a problem I can't solve. The following .png file shows the location of a text box assocaited with a plot.
The code used to generate this plot is as follows;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Plot Altitude - TALO / Linear
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
figure('Name','Event Altitude','numbertitle','off');
axes('Position', [0.04 0.07 1.16 0.884]);
% Plot Pre-Burnout altitudes, if they exist
if size(Pre_Altitude1) > 0
h = plot(Pre_TALO_Time1, Pre_Altitude1, '-o', 'MarkerSize', 15);
set(h(1), 'Color', 'r', 'MarkerFaceColor', 'r');
end
hold on;
% Plot Post-Burnout altitudes, if they exist
if size(Post_Altitude1) > 0
h = plot(Post_TALO_Time1, Post_Altitude1, '-d', 'MarkerSize', 15);
set(h(1), 'Color', 'r', 'MarkerFaceColor', 'r');
end
% Only hold all current axes and connect the data sets if the size of
% Pre-Altitude1 and Post-Altitude 1 is > 0
if size(Pre_Altitude1) & size(Post_Altitude1) > 0 % Use '&' since Pre/Post Altitude are arrays
aa = [Pre_TALO_Time1(end), Post_TALO_Time1(1)];
bb = [Pre_Altitude1(end), Post_Altitude1(1)];
plot(aa, bb, 'r-', 'LineWidth', 1);
end
% Plot the burnout message data points, if they exist
if size(BO_TALO_Time1) > 0
hold all;
h = plot(BO_TALO_Time1, BO_Altitude1, '*');
set(h(1), 'Color', 'b', 'MarkerFaceColor', 'b', 'MarkerSize', 15 );
end
% Add the title, legend, and classifications
title(Event_Title, 'Fontsize', 20, 'fontweight', 'b');
% The following is used to create a standard icon in the legend
% regardless of the combination of data sets (Pre-BO, BO, Post-BO)
plt1=plot(-100,-100,'-', 'Color', 'r');
legend(plt1,{Source1}, 'Location', 'NortheastOutside');
set(legend, 'FontSize', 20);
text('String', '\bfCLASS\rm', 'Position', [-0.0485291954 1.0517297 0], 'Fontsize', 20, 'Units', 'normalized', 'Color', [1 0 0], 'EdgeColor', 'black'); % upper left
Max_TALO_X_Values = [max(Pre_TALO_Time1) max(BO_TALO_Time1) max(Post_TALO_Time1)];
Max_TALO_X = max(Max_TALO_X_Values);
set(gca, 'XLim', [0 10*ceil(max(Max_TALO_X)/10)]);
Max_Y_Values = [max(Pre_Altitude1) max(BO_Altitude1) max(Post_Altitude1)];
Max_Y = max(Max_Y_Values);
set(gca, 'YLim', [0 10*ceil(max(Max_Y)/10)]);
ylim('auto');
xlabel('TALO (Sec)', 'fontsize', 20, 'fontweight', 'b');
ylabel('Altitude (Km)', 'fontsize', 20, 'fontweight', 'b');
set(gca, 'Fontsize', 16);
grid on;
box on;
% Add the trajectory flag annotation box
str = {'\bullet L Point', '\ast B Point', '\diamondsuitZ Point'};
annotation('textbox', [0.880 0.450 0.110 0.104], 'Interpreter', 'tex', 'String', str, 'FontSize', 16, 'Color', [1 0 0], 'FitBoxToText', 'on');
The text box should be near the upper left corner of the plot.
Why is MATLAB not placing it here?
Thank you.

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采纳的回答

Mike Garrity
Mike Garrity 2015-5-28
If you mean the text object with the string 'CLASS', then I think that it's the order of the Position and Units properties on your PV-pair list.
This:
text('String', '\bfCLASS\rm', 'Position', [-0.049 1.052 0], 'Units', 'normalized')
means place the text at [-.049 1.052 0] in the default units (which is data), and then convert the units to normalized.
This:
text('String', '\bfCLASS\rm', 'Units', 'normalized', 'Position', [-0.049 1.052 0])
means set the units to normalized and set the position to [-.049 1.052 0], which is the upper left corner.
I'm not sure why the order would have been reversed in this case, but I have seen a few bugs where the old graphics system processed the args in the wrong order. Perhaps you had hit one of those.
  2 个评论
Brad
Brad 2015-5-29
Mike, nice catch! In each of the previous version sof MATLAB, I've never seen this as an issue. I've tested this out on 4 different M-files now and get consistent results. I suspect you are correct. Thanks.
Walter Roberson
Walter Roberson 2015-5-30
It always was defined this way (or at least for quite a number of years), so I have been careful to write it with Units first. But it was something that didn't seem to matter in practice, so it was easy to get into bad habits.

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