Best Text/number location on the plot

Question

danel james 2022-7-30

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回答： Nikolas 2024-6-5

Hello,

I want to generate the values of x on each subplot and i was wondering if there is a way to get the text or numbers placed in 'best' location than specifying (x,y) coordinates for the text location.

x(1) on plot 1

x(2) on plot 2 etc inside a forloop

thank you

dan

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Answer 1

Star Strider 2022-7-30

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在 MATLAB Online 中打开

One approach is to use the legend position after using the 'Location','best' name-value pair, and then interpolating the relative values to the relevant ‘x’ and ‘y’ values (and adding a ‘fudge factor’ if necessary).

x = 1:10;

y = randn(2,size(x,2));

figure

plot(x, y)

Ax = gca;

hl = legend('Location','best');

pos = hl.Position;

txtx = interp1([0 1],xlim,pos(1)*1.1);

txty = interp1([0 1],ylim,pos(2)*1.1);

delete(hl)

text(txtx,txty,'Hi there!')

Experiment to get the desired results.

.

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danel james 2022-7-30

Not really! i want to prnit time for each particular plot and on top of each plot should be the corresponding time. But its howing me time has 4 digits after decimal place.

round(t,3) is not working at all

Star Strider 2022-7-31

This is new, and not entirely well-described.

With respect to the text object, perhaps:

text(txtx,txty, sprintf('Time %.2f', time))

assuming here that ‘time’ is a scalar double. If it’s something else, I need to know. See the documentation on sprintf for details.

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Answer 2

Nikolas 2024-6-5

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Another way that may be more intuituve is to find the max of the x any y values and multiply them by a percentage for the location. for example: text(max(xdata)*.10,max(ydata)*0.9,'Heat Exchanger effectiveness'); Which is the equivilant to northwest location