Employing RegularizeData3D function

Dear all

I have a one-dimensional array, let's call it z, which has a given value for each pair of points (x,y). Let's say that x ranges from 0 to 300 and y from 0 to 50, being both 1D arrays too. Now, I am interested in rearrange the data to plot it through imagesc. At the same time, I want to increase the density of values of z within the spatial domain given by the 2D minimum and maximal values of x and y, respectively.

For that, I am using the RegularizeData3D function as follows:

new_x=linspace(min(x),max(x),1000);
new_y=linspace(min(x),max(y),500);
new_z=RegularizeData3D(x,y,z,new_x,new_y,'interp','bicubic','smoothness',1e-4);

However, it seems that new_z has 500x1000 dimensions, so I am not sure about which should be the order of the inputs to RegularizeData3D to a 1000x500 array, so that the each column represents each value of new_x and each row each value of new_y.

Answer 1

[Yash]

Hello Richard,

I couldn't find detailed documentation for the "RegularizeData3D" function you mentioned. The Add-On page does not specify the output dimensions. However, after reviewing the function code and its behavior, it seems that the output size is xnodes * ynodes, where "xnodes" corresponds to "new_x" and "ynodes" corresponds to "new_y" in your query.

You should avoid directly swapping "new_x" and "new_y" in the code, as this might lead to incorrect output because "new_x" and "x" are related and "new_y" and "y" are related. If you need to adjust the output dimensions, consider transposing the output "new_z" to achieve the desired size.

For more information on how to transpose matrices in MATLAB, you can refer to the following documentation: https://www.mathworks.com/help/matlab/ref/transpose.html

I hope this helps!