In this code plot(t,AC(3,:),'-r',t,AC(2,:),'-g',t,AC(1,:),'-b'); what is the value/essence of the '-r', '-g' and '-b'?

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Warda Panondi 2018-3-21

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评论： Star Strider 2018-3-21

采纳的回答： Star Strider

thank you very much

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Stephen23 2018-3-21

在 MATLAB Online 中打开

@Warda Panondi: have you read the plot documentation? It clearly explains the line specification options. Not only that, the documentation is easy to find: it is installed on your computer with MATLAB itself, so you just need to type

doc plot

or

help plot

The help is also online: this is the very first link provided by a major internet search engine:

https://www.mathworks.com/help/matlab/ref/plot.html

Reading the documentation yourself is a lot faster than posting questions on forums and then waiting for random strangers to go and read that documentation on your behalf.

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Answer 1

Star Strider 2018-3-21

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The ‘-r’, ‘-g’, and ‘-b’ tell the plot function you are using to plot ‘t,AC(3,:)’ with a red solid line, ‘t,AC(2,:)’ with a green solid line, and ‘t,AC(1,:)’ with a blue solid line.

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Warda Panondi 2018-3-21

thank you very much sir Star Strider

Star Strider 2018-3-21

As always, my pleasure.

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Answer 2

Geoff Hayes 2018-3-21

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编辑：Geoff Hayes 2018-3-21

Warda - the strings are referring to the line style, marker, and colour (see 2D line plot spec). The 'r', 'g', and 'b' are referring to the colour of the plots: red, green, blue. The '-' indicates that a solid line should be drawn.