how to plot spikes?

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bsd 2011-9-19

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https://ww2.mathworks.cn/matlabcentral/answers/16168-how-to-plot-spikes

Hai,

I have a 3 dimensional graph. I need to plot spikes at required points. How is this possible in matlab? Looking forward to hearing from you soon.

BSD

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the cyclist 2011-9-19

Your original question was very brief, and in the comments below you are trickling out very small amounts of information about what you want. Might I suggest you try to create a more detailed question with ALL the information about what you want, and what you tried, so that we do not waste everyone's time trying to guess?

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回答（1 个）

Michael Leung 2011-9-19

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https://ww2.mathworks.cn/matlabcentral/answers/16168-how-to-plot-spikes#answer_21895

I'm not sure what kind of "spikes" you are looking for, but the simplest way I can think of is to create a matrix of data, with a 2d gaussian centered at where you want your "spike" to be located, and then add them all up before plotting.

if you want your spikes sharper (taller and thinner), just decrease the standard deviation.