Questions related to saving multiple arrays in one variable

General Usage
,
1

I have a variable “fi”, which stores a global grid of elevations (units: meters), and another variable “DL” that stores 26 depth levels. Below are my scripts for creating some land/sea masks:

function f1(fi, DL)
    A = [];
    for i in 1:length(DL)
        B = fi .> -DL[i];
        A = [A, B];
    end
    A
end
L0 = f1(fi, DL);

When I checked the created mat file in Matlab, I encountered multiple issues. Would anyone please help?

  1. Why does my L0{1} give me the below answer, when it should be a grid of zeros and ones? BTW, my L0{2} gives me the correct grid.
    2×1 cell array
    { 2×1 cell }
    {1440×720 logical}

  2. Why does L0 only contains two grids, instead of the 26 grids the loop produces?

Many thanks!

2

I think you want push!(A,B) here, but anyway it is hard to know because we can’t run your code and it is not clear what exactly you want as an output.

3 Likes
3

That solved my problem beautifully.

Thank you so much!

1 Like
4

@leon, fyi the f1 function could be written conveniently as a comprehension:

f1(fi, DL) = [fi .> -DL[i] for i in 1:length(DL)]
1 Like
5

I just tried it and it worked like a charm!

Many thanks for sharing that trick!

1 Like