placing text outside the axis in the figure

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sermet
sermet 2016-2-19
回答： Star Strider 2016-2-19
figure(1); hold on
scatter(1, 1, 100, 'k', 'o')
scatter(1, 2, 100, 'k', '+')
h = legend('circle', 'Plus', 'Location', 'NorthEast');
set(h, 'FontSize', 14)
axis([0 3 0 3])
text=('information:')
I need to place text string outside the axis in the figure. If it is not possible I need to insert text right below the legend. Scatter data is not constant all the time so the location of the text wouldn't depend on the axis data.
Thanks in advance

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采纳的回答

Star Strider
Star Strider 2016-2-19
I don’t know where you want to put them outside the axes, so this code puts them below the legend instead. It is adaptive, and uses the 'Position' property of the legend and the axis limits to place the text object. You will have to experiment with it to get the result you want:
figure(1); hold on
scatter(1, 1, 100, 'k', 'o')
scatter(1, 2, 100, 'k', '+')
h = legend('circle', 'Plus', 'Location', 'NorthEast');
set(h, 'FontSize', 14)
axis([0 3 0 3])
axlim = get(gca, 'XLim'); % Get ‘XLim’ Vector
aylim = get(gca, 'YLim'); % Get ‘YLim’ Vector
legpos = get(h, 'Position'); % Get ‘legend’ 'Position' Vector
x_txt = min(axlim) + diff(axlim)*legpos(1) + 0.05*diff(aylim); % Set ‘x’-Coordinate Of Text Object
y_txt = min(aylim) + diff(aylim)*legpos(2) - 0.01*diff(aylim); % Set ‘y’-Coordinate Of Text Object
text(x_txt, y_txt, 'information:')

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