Colormap for multiple plots
显示 更早的评论
Hi,
I have a matrix K of size N x n and I plot the values of K on the same figure by using "hold on" n plots with N values each.
I would like to use a color map (from -1 to 1 , Blue to Red) in the following way: the n-th plot has color "0.4" or yellow if the first value of the column K(1,n) = 0.4 and so on.
How can I achieve this please?
Here is the code I have been trying to play with ( in particular adding the option 'Color' then 'jetcustom' in the plot options returns an error, I was trying to do like in this answer MathWorks Answer)
colormap(jet(n));
jetcustom=jet(n);
figure
x=1:k;
for i=1:n
y=K(:,i);
I=ismember(i,A);
J=ismember(i,B);
if I==1
plot(x,y,'--');
elseif J==1
plot(x,y);
end
hold on
end
xlim([1 k]);
ylim([-1.5 1.5])
colormap(jet(10))
cb=colorbar;
caxis([-1 1])
1 个评论
Sha
2020-9-28
I used both answers below! Thank you!
jetcustom=jet(n);
r1=K(1,:);
colors = interp1(linspace(-1, 1, n), jetcustom, r1.');
figure()
set(gca, 'ColorOrder', colors , 'NextPlot', 'replacechildren');
x=1:k;
for i=1:n
y=K(:,i);
I=ismember(i,Con);
J=ismember(i,Ex);
if I==1
plot(x,y,'--');
elseif J==1
plot(x,y);
end
hold on
end
xlim([1 k]);
ylim([-1.5 1.5])
colormap(jet(10))
cb=colorbar;
caxis([-1 1])
采纳的回答
Image Analyst
2020-9-28
1 个投票
See my attached demo.
4 个评论
Sha
2020-9-28
Image Analyst
2020-9-28
Can you "Accept this answer" then? Thanks in advance.
Sha
2020-9-28
Image Analyst
2020-9-29
Correct. However, if you like other answers, you can also award them the same number of "reputation points" (as an Accept) by clicking the "Vote" thumbs up icon. Thanks again. Feel free to come back anytime.
更多回答（1 个）
Ameer Hamza
2020-9-28
编辑：Ameer Hamza
2020-9-28
colormap is not used for deciding the color of plot() lines. For that, you need to modify ColorOrder property. Something like this should work.
jetcustom = jet(n);
r1 = K(1, :); % first row decide the colors
colors = interp1(linspace(-1, 1, n), jetcustom, r1.');
figure()
ax = axes()
ax.ColorOrder = colors; % colororder(ax, colors)
x=1:k;
for i=1:n
y=K(:,i);
I=ismember(i,A);
J=ismember(i,B);
if I==1
plot(x,y,'--');
elseif J==1
plot(x,y);
end
hold on
end
xlim([1 k]);
ylim([-1.5 1.5])
colormap(jet(10))
cb=colorbar;
caxis([-1 1])
类别
在 帮助中心 和 File Exchange 中查找有关 Orange 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
