How do I translate RGB color to a color on my patch Object?

Question

Abhay Aradhya 2017-6-7

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/343647-how-do-i-translate-rgb-color-to-a-color-on-my-patch-object

评论： Walter Roberson 2017-6-7

采纳的回答： KSSV

X = [0 0 5; 0 0 5; 4 4 9];

Y = [0 4 0; 3 7 3; 0 4 0];

C = [0; .2422; 1];

figure

patch(X,Y,C);

Can anyone please help me find out how this value "0.2422" translates to its corresponding RGB value.

Matlab Documentation (" https://www.mathworks.com/help/matlab/creating_plots/how-patch-data-relates-to-a-colormap.html ") is not of much use in this directtion as well.!!

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

KSSV 2017-6-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/343647-how-do-i-translate-rgb-color-to-a-color-on-my-patch-object#answer_269833

编辑：KSSV 2017-6-7

在 MATLAB Online 中打开

X = [0 0 5; 0 0 5; 4 4 9];  
Y = [0 4 0; 3 7 3; 0 4 0];  
figure
mycolor = 'r' ; % you can use 'r','b','g','c','m','k', etc..
patch(X,Y,mycolor);

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Abhay Aradhya 2017-6-7

在 MATLAB Online 中打开

Thank you that worked. But I wanted the RBG values to the color being put in.

X = [0 0 5; 0 0 5; 4 4 9]; 
Y = [0 4 0; 3 7 3; 0 4 0];  
figure
mycolor = [1 0.76 0]
patch(X,Y,mycolor);

This did the tric

请先登录，再进行评论。

Answer 2

Walter Roberson 2017-6-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/343647-how-do-i-translate-rgb-color-to-a-color-on-my-patch-object#answer_269835

http://www.mathworks.com/help/matlab/ref/patch-properties.html#property_d0e726049

Cdatamapping defaults to scaled. You end up about 1/4 of the way through the color map.

2 个评论
显示无隐藏无

Abhay Aradhya 2017-6-7

在 MATLAB Online 中打开

Walter found a way to get it done

X = [0 0 5; 0 0 5; 4 4 9]; 
Y = [0 4 0; 3 7 3; 0 4 0];  
figure
mycolor = [1 0.76 0]
patch(X,Y,mycolor);

This will assign the same color to all the triangles in this case. If you need to assign different colors then just pass the "patch" line through a loop and assign different colors to it. You could make a array of colors if that helps and loop it through.

Walter Roberson 2017-6-7

This is a different question than what you asked. You were asking how MATLAB determined which color got plotted given a particular data value, not how to force a particular face or edge to be a particular color.

请先登录，再进行评论。