# scatter3 -- plotting points with different colors attributes

조회 수: 1(최근 30일)
Roger Breton 2021년 12월 22일
댓글: Matt J 2021년 12월 23일
I would like to explore a different approach with my scatter3 plotting project.
So far, I'm using a custom data tip to identify numerically colors (3D points) that are outside the gamut of my output device :
As you can see, there are points that clearly lie outside the 3D volume of the 'destination gamut'. For example, the data point shown above is 10.3511. Now, I'd to explore the possibility of adding a 'white outline' to those points, to further drive home the idea that they are out of gamut, for my students. What would be my best approach?
I was thinking, perhaps, to construct a loop to sub-select all the point that have less than, say, 1 DeltaE, and store them in a 'inGamut' array. And sending the rest in an 'outGamut' array, and use two calls to scatter3; one call for the inGamut points, followed by a second call, where I would specify additional attribute such as "outline" (or stroke -- don't know how it's called in Matlab) for the outGamut points.
It's either than or go through all the points in a loop and have them plotted differently depending on their DeltaE value.
Which would be a good (easiest) approach?

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### 답변(1개)

Matt J 2021년 12월 22일
편집: Matt J 2021년 12월 23일
The first option sounds the closest to what I would do, except that I see no reason to use a loop. Just use logical indexing:
in=DE76<1; out=~in;
inGammut={X(in), Y(in), Z(in)};
outGammut={X(out), Y(out), Z(out)};
hold on
scatter3(inGammut{:},80,RGB,'filled');
scatter3(outGammut{:},_____);
hold off
##### 댓글 수: 5표시숨기기 이전 댓글 수: 4
Matt J 2021년 12월 23일
Where I had DeltaE, I really meant DE76.

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R2021b

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