How to colour a spesific points in a graph

[Al-rawachy]

Hi all,

I have a graph contains power steps, i want to colour a spesific pints(one step), i have read some comments regarding XY graph. But i dont use it at this moment. Any idea? Thanks in advance

[Norbert_B]

A single plot has a single color. Period.

So if you want to have different colors in "a single plot", you have to fake it by using multiple plots. XY Graph helps as it simplifies positioning of plots next to each other.

Norbert

[Al-rawachy]

Thank you so much for your comment, can you please explain to me how to fake by using multiple plots?
Thanks in advance

[Norbert_B]

You should take a look into the context help of the XY Graph to learn how to bundle multiple plots.

The next to look into is how to make X-arrays for all these fake plots to get an appearance of "one single plot".

Norbert

[Al-rawachy]

Ok, i will have a look. Thanks again

[pjr1121 · Accepted solution]

The second plot you add will be an array of the same length as your data (and the same X-array), with all of the y-values set to NaN (this prevents it from appearing on the graph).  When you know which point you want to "change color", copy it's value into the same location in the second plot's cluster.  Set the color of plot2 to whatever you want.  This can be done for any point on the graph (lets say you wanted to color all points above a certain threshold, just repeat above steps for each point of interest).

[ben64]

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@pjr1121 wrote:

The second plot you add will be an array of the same length as your data (and the same X-array), with all of the y-values set to NaN (this prevents it from appearing on the graph). 

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This will work but it is not necessary to have an array of the same lenght, you can have a single point array. Select plot type that doesn't include line and point type that you can see on the graph.

Ben64

[Hatef.fouladi]

also I think on other method  I think it is more easy to work with 

just a bit work on coordinates conversion's 

[Al-rawachy]

Hi all,

I am so grateful to you guys, It's really work. Thanks again

Regards