Need to combine doubles with different sizes

I need to combine a set of doubles into one double matrix. My problem is that they are all different sizes. How would I go about doing this?

[Stalin Samuel]

attach the file(which contains all different size matix) for better understanding

[Walter Roberson]

Are you trying to put each member into a row (or column) with them starting as different lengths, and you want to end up with a rectangular matrix that has NaN in each location where there was no value?

[jgillis16]

Walter, yes you're on the right track. I have several different doubles that I need to combine but they all have varying lengths. The problem I'm facing is that say I have an 'x' double. This 'x' double is associated with another set of 'y' double that is the same length as the 'x' double because they come from the same source of data. But, I have several sets of these pairs of 'x' and 'y' doubles, but they are all different lengths. How would I make these separate 'x' and 'y' doubles the same length as each other?

Answer 1

[Walter Roberson]

If packing by columns then

   YourXArray(1:length(x), Column_Number) = x;

If the x is larger then the current maximum number of rows then the array will be automatically grown and padded with 0s. If you want a different pad value then you need to indicate to us what padding you want.

[jgillis16]

That's what I had done before manually, except when I try to combine both my 'x' and 'y' double values with other 'x' and 'y' double values, the zeros mess up the order. hope that's clear...

[Walter Roberson]

Then perhaps you should be padding with something else like -inf or nan

Lx = length(this_x);
if Lx > size(YourXArray,1)
  YourXArray( size(YourXArray,1)+1 : Lx, :) = PadValue;
end
 YourXArray(1:Lx, ColumnNumber) = x;

[jgillis16]

what does 'this_x', and 'x' refer to? thanks!