Plotting a data set

Question

I have data set like this (x , y , n) n is the number from 0 to 12 I want to plot this data set but I want to the color of each point be base on the third column. For example if I have 0 in third column get red point on my graph and for 2 get blue and so far.

Answer 1

I assume your data consist of triplets: {x,y,color}. For an example, we create some data:

SeedRandom[10];
dat = RandomInteger[{0, 12}, {20, 3}];

We use ListPlot to display the data and color the points using ColorFunction. As ColorFunction only receive {x,y}, we need to look up the third element of the triple:

SeedRandom[10];
dat = RandomInteger[{0, 12}, {20, 3}];
ListPlot[dat[[All, 1 ;; 2]], 
 ColorFunction -> (Hue[Cases[N@dat, {#1, #2, _}][[1, 3]]/12] &), 
 ColorFunctionScaling -> False]

Answer 2

The data points in the x- and y-axes.

x = {1, 2, 3, 4};
y = {1, 2, 3, 4};

Create the list to be plotted

z = Thread[{x, y}]

One way:

ListPlot[{#} & /@ z, PlotStyle -> list2]

A second way:

ListPlot[{{Style[z[[1]], Green]}, {Style[z[[2]], Purple]}, {Style[
    z[[3]], Red]}}, PlotStyle -> PointSize[0.02]]

A third way:

Graphics[Prepend[Riffle[list2, Point /@ list1], PointSize[0.03]], 
 Frame -> True]