How can I plot a 2D contour from data vectors?

2 次查看（过去 30 天）
Schneider Eusse
Schneider Eusse 2013-8-18
Hi,
I have 3 column vectors PosX, PosY and T; all of size 1367 1
I want to plot 2d contour where:
X axis be defined by PosX
Y axis be defined by PosY
and Z axis be a colormap of T
An exmaple of my data:
PosX(5,1)=24.5;
PosY(5,1)=-0.5;
T(5,1)=1220;
These 3 values must represent a point of my plot.
Thanks for your help.

请先登录，再回答此问题。

回答（1 个）

Image Analyst
Image Analyst 2013-8-18
I think you mean T is the value for the (x,y) coordinate, not a colormap. But you want a colormap to be applied to the T values.
Do you just want to plot the data, like with plot3(),
plot3(X(:), Y(:), T(:));
or do you want level contours that might go in between any data that you have?
  2 个评论
Schneider Eusse
Schneider Eusse 2013-8-18
Correct, T is the value for the (x,y) coordinate, but T is not a function, i have these data as vectors (was calculated by element finite method). I want a colormap to be applied to the T values.
I got an answer using plot3(), but it is not what I need. I need only a 2d view and a colormap to the T values. how i do it?
Thanks a lot. P.D.: Excuse my bad english.
Image Analyst
Image Analyst 2013-8-18
Maybe you should turn it into a full 2D array and then use contour(). You can use TriScatteredInterp or scatteredInterpolant to do this. This will give you a value for T for every possible pair of x and y - essentially a solid 2D array (like an image).

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Contour Plots 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