Changing scientific notation on plot

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Colby 2015-4-22

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评论： Mike Garrity 2016-2-19

Hello, I'm having issues changing the default scientific notation used on some plots I'm making. I've tried the following lines of code. yt=get(ax(2), 'ytick');

set(ax(2), 'YTickLabel',sprintf('%.0d',yt));

When I use these lines, it plots every tick value for that axis, at every tick on that axis. Does anyone know what I'm doing wrong? I can't seem to figure it out. Attached is an image of the plot after the above two lines of code are executed.

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Thanks for your time

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Answer 1

Guillaume 2015-4-22

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编辑：Guillaume 2015-4-22

在 MATLAB Online 中打开

set(ax(2), 'YTickLabel', arrayfun(@(v) sprintf('%.0d', v), yt, 'UniformOutput', false));

should work. Your sprintf call returns a single string that is the concatenation of all your tick values, whereas YTickLabel expects a cell array of strings.

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Colby 2015-4-22

编辑：Guillaume 2015-4-22

在 MATLAB Online 中打开

Excellent! This works very well for my situation!

Thank you for your time and expertise.

Just incase someone in the future tries to replicate these results, note that the above code is missing quotation and a parenthesis. The same code with the typos corrected is below.

set(ax(2), 'YTickLabel', arrayfun(@(v) sprintf('%.0d', v), yt, 'UniformOutput', false));

Thanks again

Guillaume 2015-4-22

Yes, sorry about the typos. Fixed now.

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Answer 2

Stephen23 2015-4-22

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编辑：Stephen23 2015-4-22

在 MATLAB Online 中打开

You need to provide a cell array of strings.

The output of sprintf is a simple string, so MATLAB repeats this string for each tick mark. If you want to define each string uniquely, then supply them in a cell array. The axes properties documentation states this clearly: "Tick mark labels, specified as a cell array of strings. If you do not specify enough strings for all the ticks marks, then the axes cycles through the specified strings"

If yt is a numeric vector (which it should be!), then this will convert those values to a cell array of strings:

arrayfun(@(n)sprintf('%.0d',n), yt, 'UniformOutput',false)

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Answer 3

hongyu zhai 2016-2-19

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编辑：Stephen23 2016-2-19

There is a simple way to change the Axis scientific notation by change the basic property of the XAxis or YAxis.

http://www.mathworks.com/help/matlab/creating_plots/customize-format-of-tick-value-labels.html

http://www.mathworks.com/help/matlab/creating_plots/change-exponent-value-for-y-axis.html

These two example will help you.

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Mike Garrity 2016-2-19

We should note that this is a feature that was introduced in R2015b. It is a lot nicer than messing around with the TickLabels by hand as seen above, but you won't be able to use it with earlier versions of MATLAB.

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