A parametric way of listing all elements of a struct array to be used for searching

Hi experts

I have a fairly large struct variable with integers, strings, sub-structs - in other words a mess.

Is there a way to exhaustively seek through a full struct array with whatever subvariables and variable classes are present in the struct?

Now, I was hoping there would be a general way to search through any type of struct array, e.g. data{:}{:}{:}, so the that all branches have been exhaustively searched all the way to the bottom, like in a recursive parametric format approach?

Even if not, is there a way to 'string out' the tree, as to f.ex. set the nodes of all subarrays to link to the level 1 variable as to 'linearize' the structure while searching for a particular string or number?

Even if not, any ideas would be welcome..

Best

Claus

[Claus Andersson]

Thanks 'Image Analyst'. I appreciate you taking time to answer! This is exactly what I needed, and it works, altough slow on my PC. I may have to consider establish SQL database down the road.

Again - many thanks!!

Answer 1

[Image Analyst]

Here is a start for you:

s.a = 1;
s.b.x=2;
s.b.y=3;
s.c = 4
fn = fieldnames(s) % Show in command window.
numFields = length(fn);
values = zeros(numFields, 1);
for k = 1 : length(fn)
	thisField = fn{k};
	if ~isstruct(s.(thisField))
		values(k) = s.(thisField);
		fprintf('The value of s.%s is %f.\n', thisField, values(k));
	else
		% The field is another structure
		% TODO: Recurse into it by calling this function again.
		fprintf('s.%s is another structure.\n', thisField);
	end
end

You'll see:

s =

struct with fields:

a: 1

b: [1×1 struct]

c: 4

fn =

3×1 cell array

{'a'}

{'b'}

{'c'}

The value of s.a is 1.000000.

s.b is another structure.

The value of s.c is 4.000000.