How can I add markers into my plot?

2018 4 5
1 个回答
更新时间：2018 4 5
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Hallo everyone,
I would like to ask you how to add some kind of marker to hightlight an area I want to emphasize. I´m trying to plot a signal in frequency domain via below and I would like to add some thin line (or something like that) on...lets say 49,4 Hz and on about 20 other frequency values. There´s probably a way to draw it line by line, but I´m looking for some easier way, because I´m about to do the same on about 10 other plots.
Thanks in advance,
Patrik

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Birdman
Birdman 2018-4-5
Can you share your data in a mat file?
Patrik Soukup
Patrik Soukup 2018-4-5
I definitely can, but I´m not sure what exactly do you want me to share. This plot is a part of fft transformed from 9M current instantaneous values. So what exactly do you need sir? :)
Birdman
Birdman 2018-4-5
I need the transformed data.

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回答（1 个）

Walter Roberson
Walter Roberson 2018-4-5
编辑：Walter Roberson 2018-4-5

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If you have the stats toolbox then perhaps use refline()
You could also consider using fill() and setting the AlphaData of the returned patch to make it semi-transparent.

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Patrik Soukup
Patrik Soukup 2018-4-5
编辑：Patrik Soukup 2018-4-5
Thanks for your answer sir, but unfortunately I´m kind of new to Matlab and I don´t know what stats toolbox is. In fact, I would highly appreciate some code (example) to start with other those from help.

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