how do to plot points in different colors based on their labels in 2D and 3D?

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ahmed obaid
ahmed obaid 2017-7-2
评论： Image Analyst 2017-7-2
Dear experiences...
Im trying to make a plot change its color based on data labels... according to follow: i'm having clustered data points and based on their cluster id (cluster) i need to colored points, so according to my example where clusters =7, i need to plot whole points to 7 colors..
then, i need to plot centroids points also in the same figure... in 2D and 3D in scatter plot, where X,Y and Z columns represent--> my X , Y and Z coordinates of my points,
Point Name X_data Y-Data Z_data class
p1 val val val 1
p2 val val val 2
p3 val val val 3
etc...
pn val val val 7
then for centroids points :
the coordinates of centroids points are in X, Y and Z also
cent_id X Y Z
1 val val val
2 val val val
...
7 val val val
.. So how can i plot these points in dots with different colors for both points and centroids .. and also plot points with labels ( p1, p2...etc) that appear in scatter plot instead of dot.
thanks

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回答（1 个）

Image Analyst
Image Analyst 2017-7-2
Why can't you use gscatter()?
For text labels, use text():
text(x,y,txt) adds a text description to one or more data points in the current axes using the text specified by txt. To add text to one point, specify x and y as scalars in data units. To add text to multiple points, specify x and y as vectors with equal length.

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