Setting additional specific axis tick marks

2011 6 16
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更新时间：2019 5 8
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I have a y axis that spans 0 - 15. I want to place an extra tick mark (labelled with its value) at the minimum value of y (0.018 in one data set, for example).
It is not appropriate for me to use a log scale - the data is well presented, it is just not obvious to the reader that the minimum value is not zero.
Thank you.

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Walter Roberson
Walter Roberson 2011-6-16

7 个投票

set(gca, 'YTick', sort([0.018, get(gca, 'YTick')]));

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Etienne O'Brien
Etienne O'Brien 2011-6-16
Thank you Walter. Now the 0.018 value is sitting on top of the '0' label of the y axis so both values are hard to read. Is it possible to remove the default'0' value so that the axis starts 0.018 then continues as specified by default? In this example the other labels on the graph (specified by default) are 5, 10 , 15 - I'd like to be able to generalize to other graphs too.
Walter Roberson
Walter Roberson 2011-6-16
ytick = get(gca, 'YTick');
ytick(1) = 0.018;
set(gca, 'YTick', ytick);
Walter Roberson
Walter Roberson 2011-6-16
Alternative in one line:
set(gca, 'YTick', max(0.018, get(gca, 'YTick')));
Erik Lundgren
Erik Lundgren 2017-12-23
编辑：Erik Lundgren 2017-12-23
set(gca, 'YTick', max(0.018, get(gca, 'YTick'))); <-- Wonderful! Thanks Walter!
Elco Heijmink
Elco Heijmink 2018-3-23
set(gca, 'YTick', unique([0.018, get(gca, 'YTick')]));
Using unique instead of sort prevents an error is the added tick was already there
Jafar Habshee
Jafar Habshee 2019-5-8
How can the label be added in similar fasion?
Walter Roberson
Walter Roberson 2019-5-8
After setting the YTick, you can pull out the YTick again and format the values and send those to the YTickLabels property.
With R2014b or later you would typically only do that if you had special formatting needs, such as needing one label to look different than the others, or if you wanted to convert each value to its multiple of Pi : for plain formatting issues you would instead set the axes YAxis.TickLabelFormat property.

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