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Produce a 3D stem 3 plotting with a custom colormap and colorbar in Matlab

1

I want to plot data based on 3D coordinates, and this data must plot red dots to low values and blue dots to high values.
The colormap part I figured how to do, but when I try to use the colormap in the colorbar it doesn't show the right colors and C values;

example:

 x = [1 2 3 4 5 0 20 4]
 y = [5 4 2 3 1 2 10 2]
 z = [2 2 6 3 4 0 10 33]
 C = [1 10 20 30 40 2 10 5] % 1 have to be red and 40 have to be blue
 m = length(x);
 H = ones(m,1);
 for i=1:m
 H(i,1) = ((C(i)-min(C))/(max(C)-min(C)))*(1-0.65) + 0.65
 end
 S = ones(m,1);
 V = ones(m,1);
 colourmap2 = hsv2rgb([H,S,V]);
 f3=figure('pos', [950 50 450 450]);
 set(f3,'render','zbuffer');
 hold on

 for i3=1:m
 stem3(x(i3),y(i3),z(i3),'Color',colourmap2(i3,:)...
 , 'LineStyle', 'none');
 end
 clc
 xlabel('x'); ylabel('y'); zlabel('z');
 colorbar
 hold off; 
 view([-45,-45]);

matlab plot colorbar colormap

share|improve this question

edited Mar 7 at 3:41

Rodrigo Santiago

asked Mar 7 at 3:24

Rodrigo SantiagoRodrigo Santiago

62

New contributor

Rodrigo Santiago is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

1

I want to plot data based on 3D coordinates, and this data must plot red dots to low values and blue dots to high values.
The colormap part I figured how to do, but when I try to use the colormap in the colorbar it doesn't show the right colors and C values;

example:

 x = [1 2 3 4 5 0 20 4]
 y = [5 4 2 3 1 2 10 2]
 z = [2 2 6 3 4 0 10 33]
 C = [1 10 20 30 40 2 10 5] % 1 have to be red and 40 have to be blue
 m = length(x);
 H = ones(m,1);
 for i=1:m
 H(i,1) = ((C(i)-min(C))/(max(C)-min(C)))*(1-0.65) + 0.65
 end
 S = ones(m,1);
 V = ones(m,1);
 colourmap2 = hsv2rgb([H,S,V]);
 f3=figure('pos', [950 50 450 450]);
 set(f3,'render','zbuffer');
 hold on

 for i3=1:m
 stem3(x(i3),y(i3),z(i3),'Color',colourmap2(i3,:)...
 , 'LineStyle', 'none');
 end
 clc
 xlabel('x'); ylabel('y'); zlabel('z');
 colorbar
 hold off; 
 view([-45,-45]);

matlab plot colorbar colormap

share|improve this question

edited Mar 7 at 3:41

Rodrigo Santiago

asked Mar 7 at 3:24

Rodrigo SantiagoRodrigo Santiago

62

New contributor

Rodrigo Santiago is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

I want to plot data based on 3D coordinates, and this data must plot red dots to low values and blue dots to high values.
The colormap part I figured how to do, but when I try to use the colormap in the colorbar it doesn't show the right colors and C values;

example:

 x = [1 2 3 4 5 0 20 4]
 y = [5 4 2 3 1 2 10 2]
 z = [2 2 6 3 4 0 10 33]
 C = [1 10 20 30 40 2 10 5] % 1 have to be red and 40 have to be blue
 m = length(x);
 H = ones(m,1);
 for i=1:m
 H(i,1) = ((C(i)-min(C))/(max(C)-min(C)))*(1-0.65) + 0.65
 end
 S = ones(m,1);
 V = ones(m,1);
 colourmap2 = hsv2rgb([H,S,V]);
 f3=figure('pos', [950 50 450 450]);
 set(f3,'render','zbuffer');
 hold on

 for i3=1:m
 stem3(x(i3),y(i3),z(i3),'Color',colourmap2(i3,:)...
 , 'LineStyle', 'none');
 end
 clc
 xlabel('x'); ylabel('y'); zlabel('z');
 colorbar
 hold off; 
 view([-45,-45]);

matlab plot colorbar colormap

share|improve this question

edited Mar 7 at 3:41

Rodrigo Santiago

asked Mar 7 at 3:24

Rodrigo SantiagoRodrigo Santiago

62

New contributor

Rodrigo Santiago is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

 x = [1 2 3 4 5 0 20 4]
 y = [5 4 2 3 1 2 10 2]
 z = [2 2 6 3 4 0 10 33]
 C = [1 10 20 30 40 2 10 5] % 1 have to be red and 40 have to be blue
 m = length(x);
 H = ones(m,1);
 for i=1:m
 H(i,1) = ((C(i)-min(C))/(max(C)-min(C)))*(1-0.65) + 0.65
 end
 S = ones(m,1);
 V = ones(m,1);
 colourmap2 = hsv2rgb([H,S,V]);
 f3=figure('pos', [950 50 450 450]);
 set(f3,'render','zbuffer');
 hold on

 for i3=1:m
 stem3(x(i3),y(i3),z(i3),'Color',colourmap2(i3,:)...
 , 'LineStyle', 'none');
 end
 clc
 xlabel('x'); ylabel('y'); zlabel('z');
 colorbar
 hold off; 
 view([-45,-45]);

share|improve this question

edited Mar 7 at 3:41

Rodrigo Santiago

asked Mar 7 at 3:24

Rodrigo SantiagoRodrigo Santiago

62

New contributor

Rodrigo Santiago is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited Mar 7 at 3:41

Rodrigo Santiago

asked Mar 7 at 3:24

Rodrigo SantiagoRodrigo Santiago

62

New contributor

Rodrigo Santiago is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked Mar 7 at 3:24

Rodrigo SantiagoRodrigo Santiago

62

New contributor

Rodrigo Santiago is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked Mar 7 at 3:24

Rodrigo SantiagoRodrigo Santiago

62