How to interpolate gridded data for contourf?

Question

Chua Wei Yi 2022-10-9

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1820445-how-to-interpolate-gridded-data-for-contourf

回答： Chunru 2022-10-9

Hi all,

I am trying to generate a contourf image. I have a gridded data with x y z in a table. However I have a bunch of NaNs which results in considerable amount of gap in my contourf image. How can I interpolate the data bilinearly such that the adjacent known z numbers are linearly interpolated all the way through the NaNs. Below is my code for reference. And some pictures of my data and image plotted.

data = CirManualDia15H19V0S2;
y = data(2:end,1);
x = data(1,2:end);
Data = data(2:end,2:end);
Y = table2array(y);
X = table2array(x);
Data = table2array(Data);
contourf(X,Y,Data,90,'LineStyle','none');
set(gca, 'YDir','reverse');
set(gca, 'XDir','reverse')