Label each data point and color code the data points

Question

Michel Nieuwoudt 2020-6-9

0
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https://ww2.mathworks.cn/matlabcentral/answers/544871-label-each-data-point-and-color-code-the-data-points

评论： Michel Nieuwoudt 2020-6-11

Hello,

I have an XY scatter plot of 49 points, and I want to label each point according to a text. There are three classes of text (A, B and C) , and I would like to add the class to each point, and color code them for A, B and C. for example, for the first five datapoints:

X=[1 2 3 4 5]; Y= [2 4 6 8 10], and the labels would be [A A C B C]. I'd like to plot XY, with the datapoints colour coded acording to A, B and C., with a legend.

I looked up the documentation, and this is all I could find on multipoint text:

Text for Multiple Data Points

To display the same text at each location, specify txt as a character vector or string. For example, text([0 1],[0 1],'my text').

To display different text at each location, use a cell array. For example, text([0 1],[0 1],{'first','second'}).

For multiline text, use nested cell arrays. For example, text([0 1],[0 1],{{'first','new line'},'second'})

However, it wasn't quite clear to me how to apply this to my data. Could you help me with this please?

Thank you!