-
Notifications
You must be signed in to change notification settings - Fork 311
/
c3dExport.m
105 lines (88 loc) · 4.38 KB
/
c3dExport.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
% ----------------------------------------------------------------------- %
% The OpenSim API is a toolkit for musculoskeletal modeling and %
% simulation. See http://opensim.stanford.edu and the NOTICE file %
% for more information. OpenSim is developed at Stanford University %
% and supported by the US National Institutes of Health (U54 GM072970, %
% R24 HD065690) and by DARPA through the Warrior Web program. %
% %
% Copyright (c) 2005-2023 Stanford University and the Authors %
% Author(s): James Dunne %
% BJ Fregly %
% Licensed under the Apache License, Version 2.0 (the "License"); %
% you may not use this file except in compliance with the License. %
% You may obtain a copy of the License at %
% http://www.apache.org/licenses/LICENSE-2.0. %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or %
% implied. See the License for the specific language governing %
% permissions and limitations under the License. %
% ----------------------------------------------------------------------- %
% Specify point used for calculating output joint reaction moments
% 0 = electrical center, 1 = COP
%useCenterOfPressureAsMomentsPoint = 0;
% Set flag indicating whether or not to convert length units from mm to m
% 0 = no, 1 = yes
%convertLengthUnits = 0 if unspecified;
function c3dExport(useCenterOfPressureAsMomentsPoint, convertLengthUnits)
% The function names output .trc and .mot files with the same
% basename as the selcted input .c3d file.
if nargin < 2
convertLengthUnits = 0
end
%% Example of using the Matlab-OpenSim class
%% Load OpenSim libs
import org.opensim.modeling.*
%% Get the path to a C3D file
[filename, path] = uigetfile('*.c3d');
c3dpath = fullfile(path,filename);
%% Construct an opensimC3D object with input c3d path
% Constructor takes full path to c3d file and an integer for forceplate
% representation in output forces file (0 = electrical center, 1 = COP).
c3d = osimC3D(c3dpath,useCenterOfPressureAsMomentsPoint);
%% Get some stats...
% Get the number of marker trajectories
nTrajectories = c3d.getNumTrajectories();
% Get the marker data rate
rMakers = c3d.getRate_marker();
% Get the number of forces
nForces = c3d.getNumForces();
% Get the force data rate
rForces = c3d.getRate_force();
% Get Start and end time
t0 = c3d.getStartTime();
tn = c3d.getEndTime();
%% Rotate the data
c3d.rotateData('x',-90)
%% Get the c3d in different forms
% Get OpenSim tables
markerTable = c3d.getTable_markers();
forceTable = c3d.getTable_forces();
% Get as Matlab Structures
[markerStruct forceStruct] = c3d.getAsStructs();
%% Convert COP (mm to m) and Moments (Nmm to Nm)
if convertLengthUnits
c3d.convertMillimeters2Meters();
end
%% Write the marker and force data to file
% Define output file names
basename = strtok(filename,'.');
markersFilename = strcat(basename,'_markers.trc');
switch useCenterOfPressureAsMomentsPoint
case 0
forcesFilename = strcat(basename,'_forces_EC.mot');
case 1
forcesFilename = strcat(basename,'_forces_COP.mot');
end
% Write marker data to trc file.
% c3d.writeTRC() Write to dir of input c3d.
% c3d.writeTRC('Walking.trc') Write to dir of input c3d with defined file name.
% c3d.writeTRC('C:/data/Walking.trc') Write to defined path input path.
c3d.writeTRC(markersFilename);
% Write force data to mot file.
% c3d.writeMOT() Write to dir of input c3d.
% c3d.writeMOT('Walking.mot') Write to dir of input c3d with defined file name.
% c3d.writeMOT('C:/data/Walking.mot') Write to defined path input path.
c3d.writeMOT(forcesFilename);
end