How do I plot two distributions on top of each other?

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studentmatlaber
studentmatlaber 2021-10-2
评论： Star Strider 2021-10-4
I fit this histogram with the distribution fitter app. This fit is called the "t position scale" in practice. On top of this histogram, I want to plot a distribution with a mean of 0 and a variance of 1. I would be very grateful if you could help me figure out how to do this.

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回答（2 个）

Arthur Morais
Arthur Morais 2021-10-2
You can write the plot command with the two variables that you have.
plot(data,density,data,distribution)
You can change the type of line adding markers.
plot(data,density,'b--',data,distribution,'k:')
If you don't use any markars, matlab chages only the color the of line.
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studentmatlaber
studentmatlaber 2021-10-2
actually, secondly, my chart view does not match the normal distribution. I need to make the Y axes at the same time.

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Star Strider
Star Strider 2021-10-2
To plot an additional distribution on the same axes, use the hold function. For the distribution itself, use the pdf function with a vector of ‘x’ values to create the data to plot. Several distributions could be characterised by those parameters, so choose the one you want.
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studentmatlaber
studentmatlaber 2021-10-4
In fact, what I want to do here is to see how the fit I have drawn and the normal distribution with a mean of 0 and a variance of 1 will appear on top of each other. These two cannot be drawn together. I can't change the variance and the mean. Thank you for taking your time.
Star Strider
Star Strider 2021-10-4
My pleasure!
To plot the requested distribution,. it will be necessary to use the first curve. The data and fitted distribution will then essentially be a thin vertical red line, however there is no way to avoid that if the objective is to plot both in a single axes object.
.

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