How to operate on multiple function outputs?

Take this as an exmaple

t = [0.997020539 -0.07615956 0.0122; -0.076640022 -0.996018987 0.04553; 0.008683887 -0.046323856 -0.99888];

x = dcm2angle(t, 'XYZ') * 180 / pi

x =

          177.344786261912

This is the first value only. I can get what I want by doing the following.

[x(1) x(2) x(3)] = dcm2angle(t,'XYZ'); x = x * 180 / pi

x =

Columns 1 through 2

          177.344786261912          0.49755632844709

Column 3

          4.39562805575083

I want a way to do something like x = [dcm2angle(t, 'XYZ')] * 180 /pi;

Any ideas? I tried the above, with {} and deal(), none did the trick.

Answer 1

[Matt]

I found a workaround. Hopefully someone will come here and find a better option. I wrapped the dcm2angle function in another function that combines the output. Basically this:

function [out] = Mydcm2angle( T, sequence )
  [out(1), out(2), out(3)] = dcm2angle(T, sequence);
end

Then the output can be used as:

result = Mydcm2angle(t, 'XYZ') * 180 / pi;

Answer 2

[the cyclist]

x = cell(1,3);
[x{:}] = dcm2angle(t, 'XYZ') * 180 / pi;

[Matt]

Using version 2013a this throws an error.

 [x{:}] = dcm2angle(t,'XYZ') * 180 / pi
Error using  / 
Too many output arguments.

Adding .* and ./ did not correct the error. Runnig just the RHS gives:

dcm2angle(t,'XYZ') * 180 / pi

ans =

          177.344765026818

Modifying the RHS slightly:

 dcm2angle(t,'XYZ') .* (180/pi)

 ans =

          177.344765026818

Still does not produce multiple outputs.

[the cyclist]

Hm. Just to be clear, you did the preallocation step?

x = cell(1,3);

Maybe try

x = cell(3,1);

Also, I don't have the Aerospace Toolbox, so I was only going by the online documentation, and then created my own function as follows:

function [x,y,z] = answerTest()

x = 1;
y = 2;
z = 3;

end

and then calling

x = cell(1,3);
[x{:}] = answerTest()