multiple colours in a trajectory plot

5 次查看（过去 30 天）
CLARK KENDRICK GO
CLARK KENDRICK GO 2018-4-10
评论： Walter Roberson 2021-1-17
I have a time series X, which I can plot in x-y plane.
plot(X(:,1), X(:,2), 'r.')
This gives a red dot colour. What I want to do is I want to make this graph such that the colour represents the colour of the rainbow. (Red at the start, violet in the end) This is so we can give a time sense of the trajectory.
How do we do this?

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2018-4-10
编辑：Star Strider 2018-4-11
Try this:
X = [(0:50)' sin((0:50)*pi/10)']; % Create ‘X’
cm = colormap(jet); % Approximates Spectrum
X(end,2) = NaN; % Set Last Value To ‘NaN’ To Create Line
c = flipud(X(:,1)); % Define Colours To Scale With ‘X(:,1)’
figure
patch(X(:,1), X(:,2), c, 'EdgeColor','interp')
EDIT — Added plot image.
  6 个评论
显示 4更早的评论
Niklas Kurz
Niklas Kurz 2021-1-17
Would also be worth knowing how to apply the color map upside down, with other words going up the y-axis
Walter Roberson
Walter Roberson 2021-1-17
%flip the current colormap
colormap(flipud(colormap))
or for fixed colormap
colormap(flipud(jet))

请先登录，再进行评论。

更多回答（1 个）

Walter Roberson
Walter Roberson 2018-4-10
It is not possible to have multiple colors on a line create by a single call to plot() or the underlying function line() .
You can look in the File Exchange for a couple of contributions for drawing colored lines. One of them uses surface objects, and one of them uses patch objects.

类别

在 Help Center 和 File Exchange 中查找有关 Blue 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by