# Plotting 2\*N array giving a name to each point
**URL:** https://discourse.julialang.org/t/plotting-2-n-array-giving-a-name-to-each-point/81774
**Category:** New to Julia
**Tags:** question, plots
**Created:** [May 27, 2022, 9:57am UTC](https://discourse.julialang.org/t/plotting-2-n-array-giving-a-name-to-each-point/81774 "2022-05-27T09:57:13Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@Zerosum](https://discourse.julialang.org/u/Zerosum)
#### Post date: [May 27, 2022, 9:57am UTC](https://discourse.julialang.org/t/plotting-2-n-array-giving-a-name-to-each-point/81774/1 "2022-05-27T09:57:13Z")
I think this is an extremely simple question, but I just can’t really understand how the plot function reads my inputs.
For instance, I want to plot two points with scatter: (1,2) and (2,3) in a two-dimension vector space.
Each point is an outcome of my function. If I put 0.2 to the function, (1,2) comes out.
For each point, I want to give a label. For instance, for (1,2), the label is “0.2”.
2-element Vector{Any}:
(1, 2)
(2, 3)
---
### Author:  [@nilshg](https://discourse.julialang.org/u/nilshg)
#### Post date: [May 27, 2022, 12:12pm UTC](https://discourse.julialang.org/t/plotting-2-n-array-giving-a-name-to-each-point/81774/2 "2022-05-27T12:12:30Z")
Which plotting library are you using? For the most part, points to plot are provided as a vector of x coordinates and a vector of y coordinates. In your case you could do this as:
```julia
plot(first.(points), last.(points)
```
where I’m assuming that `points` is the 2-element vector of length-2 tuples you posted above.
Annotations vary by plotting package, so again if you want specific advise you’ll need to tell us which package you’re using.
---
### Author:  [@skleinbo](https://discourse.julialang.org/u/skleinbo)
#### Post date: [May 27, 2022, 12:27pm UTC](https://discourse.julialang.org/t/plotting-2-n-array-giving-a-name-to-each-point/81774/3 "2022-05-27T12:27:09Z")
`Plots.jl` is clever enough to recognize a vector of 2-tuples as coordinates. Doing `scatter([(1,2),(3,4)])` produces
---
### Author:  [@Zerosum](https://discourse.julialang.org/u/Zerosum)
#### Post date: [May 27, 2022, 12:39pm UTC](https://discourse.julialang.org/t/plotting-2-n-array-giving-a-name-to-each-point/81774/4 "2022-05-27T12:39:33Z")
Thank you very much for the replies.
I’m using Plots.ji.
I’ve tried with the above one, but it returns the following.
This is only half of what I want.
Somehow, the scatter function is perceiving my input only as y1, but what I’m putting in is a 19-element vector of which each row is a two-dimension array. I want to label from y1 to y19, for instance.
---
### Author:  [@rafael.guerra](https://discourse.julialang.org/u/rafael.guerra)
#### Post date: [May 27, 2022, 1:17pm UTC](https://discourse.julialang.org/t/plotting-2-n-array-giving-a-name-to-each-point/81774/5 "2022-05-27T13:17:04Z")
One way:
```julia
using Plots, Printf
x = LinRange(0,1,19)
v = [(rand(0:9),rand(0:9)) for _ in 1:19]
plot(legend=:outerright)
for (i,t) in pairs(v)
scatter!(t, label=@sprintf("%.2f",x[i]))
end
Plots.current()
```
---
### Author:  [@Zerosum](https://discourse.julialang.org/u/Zerosum)
#### Post date: [May 27, 2022, 1:39pm UTC](https://discourse.julialang.org/t/plotting-2-n-array-giving-a-name-to-each-point/81774/6 "2022-05-27T13:39:04Z")
I didn’t expect that the problem will be this complicated.
In the end, I could manage to get the following plot. I really appreciate your suggestion.
If I may ask one more thing, I was wondering if there is any way that I can put each label right above each point in the diagram.
Thank you very much again
---
### Author:  [@rafael.guerra](https://discourse.julialang.org/u/rafael.guerra)
#### Post date: [May 27, 2022, 1:47pm UTC](https://discourse.julialang.org/t/plotting-2-n-array-giving-a-name-to-each-point/81774/7 "2022-05-27T13:47:44Z")
> [@Zerosum](#):
>
> if there is any way that I can put each label right above each point in the diagram
Yes, [see one example here](https://discourse.julialang.org/t/mark-each-scatter-point-uniquely/58803/4).
---
### Author:  [@Zerosum](https://discourse.julialang.org/u/Zerosum)
#### Post date: [May 27, 2022, 2:12pm UTC](https://discourse.julialang.org/t/plotting-2-n-array-giving-a-name-to-each-point/81774/8 "2022-05-27T14:12:41Z")
Thank you very much!