Combining rows of each field within a structure

Hello,

I'd like to combined the rows of a structure for each field. I won't always know how many rows there will be in the structure. The example I show is a 1 x 3 structure, but I'd like to plan for a 1 x ? structure. So I thought combining the rows in a for loop would be the best way. I'm aiming for a 3 x 101 double in each of the fields in this example.

I'm sure there's a pretty easy solution to this but I'm a novice when it comes to MATLAB

Any help would be greatly appreciated!

[Image Analyst]

You forgot to attach your variable in a .mat file. Perhaps try vertcat.

If you have any more questions, then attach your data and code to read it in with the paperclip icon after you read this:

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[Josh Tome]

Here is my .mat file. I am importing my data directly from another software program that works directly with MATLAB. As you can see from above the structure I'm working with is name "ModOutRstance_interp_x_all" (I know that's a long name). I've also attached the code I have up to this point.

Answer 1

[Voss]

S = load('Combined_Structure.mat','ModOutRstance_interp_x_all');

new_struct = struct();
f = fieldnames(S.ModOutRstance_interp_x_all);
for ii = 1:numel(f)
    new_struct.(f{ii}) = vertcat(S.ModOutRstance_interp_x_all.(f{ii}));
end

disp(new_struct);

               LHipAngles: [3×101 double]
              LKneeAngles: [3×101 double]
           LAbsAnkleAngle: [3×101 double]
             LAnkleAngles: [3×101 double]
               RHipAngles: [3×101 double]
              RKneeAngles: [3×101 double]
             RAnkleAngles: [3×101 double]
           RAbsAnkleAngle: [3×101 double]
            LPelvisAngles: [3×101 double]
            RPelvisAngles: [3×101 double]
      LFootProgressAngles: [3×101 double]
      RFootProgressAngles: [3×101 double]
              RNeckAngles: [3×101 double]
              LNeckAngles: [3×101 double]
             RSpineAngles: [3×101 double]
             LSpineAngles: [3×101 double]
          LShoulderAngles: [3×101 double]
             LElbowAngles: [3×101 double]
             LWristAngles: [3×101 double]
          RShoulderAngles: [3×101 double]
             RElbowAngles: [3×101 double]
             RWristAngles: [3×101 double]
            RThoraxAngles: [3×101 double]
            LThoraxAngles: [3×101 double]
              RHeadAngles: [3×101 double]
              LHeadAngles: [3×101 double]
                LHipPower: [3×101 double]
               LKneePower: [3×101 double]
              LAnklePower: [3×101 double]
                RHipPower: [3×101 double]
               RKneePower: [3×101 double]
              RAnklePower: [3×101 double]
              LWaistPower: [3×101 double]
              RWaistPower: [3×101 double]
               LNeckPower: [3×101 double]
               RNeckPower: [3×101 double]
           LShoulderPower: [3×101 double]
           RShoulderPower: [3×101 double]
              LElbowPower: [3×101 double]
              RElbowPower: [3×101 double]
              LWristPower: [3×101 double]
              RWristPower: [3×101 double]
     LGroundReactionForce: [3×101 double]
           LNormalisedGRF: [3×101 double]
     RGroundReactionForce: [3×101 double]
           RNormalisedGRF: [3×101 double]
              LAnkleForce: [3×101 double]
              RAnkleForce: [3×101 double]
               RKneeForce: [3×101 double]
               LKneeForce: [3×101 double]
                RHipForce: [3×101 double]
                LHipForce: [3×101 double]
              LWaistForce: [3×101 double]
              RWaistForce: [3×101 double]
               LNeckForce: [3×101 double]
               RNeckForce: [3×101 double]
           LShoulderForce: [3×101 double]
           RShoulderForce: [3×101 double]
              LElbowForce: [3×101 double]
              RElbowForce: [3×101 double]
              LWristForce: [3×101 double]
              RWristForce: [3×101 double]
    LGroundReactionMoment: [3×101 double]
    RGroundReactionMoment: [3×101 double]
             LAnkleMoment: [3×101 double]
             RAnkleMoment: [3×101 double]
              RKneeMoment: [3×101 double]
              LKneeMoment: [3×101 double]
               RHipMoment: [3×101 double]
               LHipMoment: [3×101 double]
             LWaistMoment: [3×101 double]
             RWaistMoment: [3×101 double]
              LNeckMoment: [3×101 double]
              RNeckMoment: [3×101 double]
          LShoulderMoment: [3×101 double]
          RShoulderMoment: [3×101 double]
             LElbowMoment: [3×101 double]
             RElbowMoment: [3×101 double]
             LWristMoment: [3×101 double]
             RWristMoment: [3×101 double]
             CentreOfMass: [3×101 double]
        CentreOfMassFloor: [3×101 double]
                      PEL: [3×101 double]
                      LFE: [3×101 double]
                      LTI: [3×101 double]
                      LFO: [3×101 double]
                      LTO: [3×101 double]
                      RFE: [3×101 double]
                      RTI: [3×101 double]
                      RFO: [3×101 double]
                      RTO: [3×101 double]
                      HED: [3×101 double]
                      LCL: [3×101 double]
                      RCL: [3×101 double]
                      TRX: [3×101 double]
                      LHU: [3×101 double]
                      LRA: [3×101 double]
                      LHN: [3×101 double]
                      RHU: [3×101 double]
                      RRA: [3×101 double]
                      RHN: [3×101 double]

Answer 2

[Fangjun Jiang]

s(1).f=1:3;
s(2).f=4:6;
s(3).f=7:9

s = 1×3 struct array with fields:
    f

vertcat(s.f)

ans = 3×3

1 2 3 4 5 6 7 8 9

Answer 3

[Image Analyst]

How about this:

s = load('Combined_Structure.mat');

Warning: Could not find appropriate function on path loading function handle C:\Users\jtome\Box\Haddas' Lab\Code\Gait\NexusIntegrationRstanceOnly.m>@(f)interp1(f.',linspace(1,size(f,2),101)).'

Warning: Variable 'vicon' originally saved as a ViconNexus cannot be instantiated as an object and will be read in as a uint32.

m = s.ModOutRstance_interp_x_all;
allm = vertcat(m.LHipAngles)

allm = 3×101

-14.0682 -14.3389 -14.5825 -14.7945 -14.9404 -15.0484 -15.1047 -15.0802 -15.0087 -14.8645 -14.6335 -14.3494 -13.9747 -13.5165 -13.0028 -12.3875 -11.7001 -10.9591 -10.1156 -9.2170 -8.2713 -7.2345 -6.1617 -5.0469 -3.8735 -2.6766 -1.4498 -0.1949 1.0709 2.3497 -14.3670 -14.6213 -14.8433 -15.0324 -15.1529 -15.2237 -15.2487 -15.1905 -15.0656 -14.8849 -14.6138 -14.2617 -13.8483 -13.3452 -12.7522 -12.0977 -11.3619 -10.5357 -9.6541 -8.7067 -7.6789 -6.6084 -5.4921 -4.3166 -3.1153 -1.8892 -0.6322 0.6328 1.9051 3.1782 -14.5355 -14.8635 -15.1678 -15.4468 -15.6655 -15.8477 -15.9887 -16.0462 -16.0559 -16.0077 -15.8592 -15.6543 -15.3778 -14.9932 -14.5480 -14.0230 -13.3926 -12.7034 -11.9342 -11.0730 -10.1605 -9.1770 -8.1235 -7.0312 -5.8852 -4.6957 -3.4823 -2.2378 -0.9753 0.2962