Interpolating contour plot using user input

16 次查看（过去 30 天）
Radhika Kulkarni
Radhika Kulkarni 2021-1-19
评论： piston_pim_offset 2023-11-18
Hello,
I have created a 2D contour map using a 25x19 matrix and was wondering how to interpolate the value at certain user-input x-y coordinates? Essentially, I want the user to enter coordinates that are either integer or decimal, and for the code to output the value at that corresponding location. Any help would be appreciated :)
data = readmatrix('pixeltxt.txt');
contourf(data);
grid minor

请先登录，再回答此问题。

采纳的回答

Bram Schroeders
Bram Schroeders 2021-1-20
I think taking a look at this documentation may help you https://www.mathworks.com/help/matlab/ref/scatteredinterpolant.html
  13 个评论
显示 11更早的评论
Bram Schroeders
Bram Schroeders 2021-1-26
You can use the rescale function:
So for instance you have a vector called A and you want to set the x-axis to [-21.4 -19.6] and y-axis to [-17.5 -15] you can do this:
A(:,1) = rescale(A(:,1),-21.4,-19.6);
A(:,2) = rescale(A(:,2),-17.5,-15.0);
I think this is what you mean

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Interpolation 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