Resize plot to fit text

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Davor Pavlovski
Davor Pavlovski 2019-12-9
编辑： Adam Danz 2019-12-9
Is it possible to resize the y-axis automatically, so that my text always fits in the plot.
(as far as I can see, it is not clearly possible by using the "axis" and "ylim" functions)
Capture.PNG
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Davor Pavlovski
Davor Pavlovski 2019-12-9
yes I thought about that, but i just wondered if there is a cleaner way
Walter Roberson
Walter Roberson 2019-12-9
The only methods I can think of are not clean.

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Adam Danz
Adam Danz 2019-12-9
编辑：Adam Danz 2019-12-9
  1. Get the extent of the text objects after plotting the text.
  2. Add the vertical position and height to get the upper position of each text object
  3. Adjust the y axis limit so it contains all text objects.
h = text(1:numel(y),y,strsplit(num2str(y)),'VerticalAlignment','bottom');
ext = cell2mat(get(h,'Extent')); % Step 1
upperPosition = sum(ext(:,[2,4]),2); % Step 2
ylim([min(ylim()),max(max(ylim()),max(upperPosition))]) % step 3
The y limit will be adjusted so that it maintains its current lower limit and increases its upper limit only if there is text that exceeds the axis boundaries.
Result
[update]
That could be reduced to one line where h is the handle to the text output.
ylim([min(ylim()), max(max(ylim()),max(cellfun(@(x)sum(x([2,4])),get(h,'Extent'))))])
It could also be put into an anonymous function where the two inputs are h and ax which are the text handles and the axis handle.
fitText = @(ax,h)ylim(ax,[min(ylim(ax)), max(max(ylim(ax)),max(cellfun(@(x)sum(x([2,4])),get(h,'Extent'))))]);
fitText(gca,h)
  1 个评论
Adam Danz
Adam Danz 2019-12-9
The full code to produce the figure, text and y limits:
clf()
y = [1.6, 1.7, 2];
bar(y)
axis tight
h = text(1:numel(y),y,strsplit(num2str(y)),'VerticalAlignment','bottom');
ext = cell2mat(get(h,'Extent')); % Step 1
upperPosition = sum(ext(:,[2,4]),2); % Step 2
ylim([min(ylim()),max(max(ylim()),max(upperPosition))]) % step 3

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