How to convert long to scientific e format in plots legend?

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Kalasagarreddi Kottakota 2022-6-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1737740-how-to-convert-long-to-scientific-e-format-in-plots-legend

评论： Bjorn Gustavsson 2022-6-10

txt = ['lambda = ',num2str(lambda(check))];
plot(1:100, abs(Arec(:,2000)),'DisplayName',txt)% capon
legend show

How to change the long format to scieitific e, like 1e6 in legend?

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回答（1 个）

Bjorn Gustavsson 2022-6-10

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https://ww2.mathworks.cn/matlabcentral/answers/1737740-how-to-convert-long-to-scientific-e-format-in-plots-legend#answer_982830

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You could be a bit more explicit in the call to legend:

txt = ['lambda = ',num2str(lambda(check))];
ph = plot(1:100, abs(Arec(:,2000))); % ,'DisplayName',txt); % capon
leg_str = sprintf('lambda = %3.3g',lambda(check));
legend(ph,leg_str)

HTH

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Rik 2022-6-10

Or edit the display text property to have the e format.

Bjorn Gustavsson 2022-6-10

True, but explicitly calling legend with the plot-handles has additional benefits in terms of what to include, which is not necessary in this case but will eventually pop up.

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