getting time series data from simspace model

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Ala'a Alshubbak 2023-2-25

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https://ww2.mathworks.cn/matlabcentral/answers/1918725-getting-time-series-data-from-simspace-model

评论： Ala'a Alshubbak 2023-2-28

I am running a model of an excavator built on simspace simulation. I got my data from the model as a time series.

I try to enter each data independently to have a matrix. for example at time =12 . I want a matrix that has information on position x and z

I wrote my code as function named (create_NewPinLoc_XZ) to take the results from simulation (simOut) and an iteration time (I) and give me an out put of structure variable ( pin_struc) . although my script works probably on all-time slots, it fails on time =xx.8 and xx.3

for example, at time =18.3 or 18.8 .. the output structure called (pin_struc) gives an empty value.

starting from 15.8 ,and above , the results become empty structure for time= xx.3 and xx.8 only.

it looks strange , and i don't know what is exactly the issue.

here is my function script.

function pin_struc= create_NewPinLoc_XZ(simOut,I)
%%%%%%%%% simout contains a structure for all pin location as time serise 
%%%%%%%%% I is a time between 0:0.1:31
%time vector
time=simOut.excavator_frames2.Chassis.A1.Time;
%chassis pins
A1=simOut.excavator_frames2.Chassis.A1;
A2=simOut.excavator_frames2.Chassis.A2;
%chassis matrix 
A1_info=A1.data;
A2_info=A2.data;
%boom pins
B1= simOut.excavator_frames2.Boom.B1;
B2= simOut.excavator_frames2.Boom.B2;
B3= simOut.excavator_frames2.Boom.B3;
%boom matrix 
B1_info=B1.data;
B2_info=B2.data;
B3_info=B3.data;
% stick pins
C1= simOut.excavator_frames2.Stick.C1;
C2= simOut.excavator_frames2.Stick.C2;
C3= simOut.excavator_frames2.Stick.C3;
C4= simOut.excavator_frames2.Stick.C4;
%stick matrix 
C1_info=C1.data;
C2_info=C2.data;
C3_info=C3.data;
C4_info=C4.data;
% bucket 
D1= simOut.excavator_frames2.Bucket.D1;
D2= simOut.excavator_frames2.Bucket.D2;
D3= simOut.excavator_frames2.Bucket.D3; 
%BUCKET MATRIX
D1_info=D1.data;
D2_info=D2.data;
D3_info=D3.data;            
%linkage
E1= simOut.excavator_frames2.Linkage.E1;
%LINKAGE MATRIX
E1_info=E1.data;
%create a data for a table for certain i time iteration
%data only for x-axis and z-axis [1 3]
%chassis @I itertion
A1_pin=A1_info(time==I,[1 3]);
A2_pin=A2_info(time==I,[1 3]);
%boom @I itertion
B1_pin=B1_info(time==I,[1 3]);
B2_pin=B2_info(time==I,[1 3]);
B3_pin=B3_info(time==I,[1 3]);
%stick @I itertion
C1_pin=C1_info(time==I,[1 3]);
C2_pin=C2_info(time==I,[1 3]);
C3_pin=C3_info(time==I,[1 3]);
C4_pin=C4_info(time==I,[1 3]);
%BUCKET 
D1_pin=D1_info(time==I,[1 3]);
D2_pin=D2_info(time==I,[1 3]);
D3_pin=D3_info(time==I,[1 3]);
%LINKAGE 
E1_pin=E1_info(time==I,[1 3]);
%THE GLOBAL NEW STRUCTURE
fprintf('find pins location on only x and z axies \n')
%Create new structure with only one info for one pins situation
%chassis
ExcvGlobal_new_xz.Chassis.ToBoom= A1_pin;
ExcvGlobal_new_xz.Chassis.ToBoomCyl= A2_pin;
%boom
ExcvGlobal_new_xz.Boom.ToBoomCyl=B1_pin;
ExcvGlobal_new_xz.Boom.ToStickCyl=B2_pin;
ExcvGlobal_new_xz.Boom.ToStick=B3_pin;
%stick 
ExcvGlobal_new_xz.Stick.ToStickCyl=C1_pin;
ExcvGlobal_new_xz.Stick.ToBucketCyl=C2_pin;
ExcvGlobal_new_xz.Stick.ToBucketLinkage=C3_pin;
ExcvGlobal_new_xz.Stick.ToBucket=C4_pin;
%Bucket
ExcvGlobal_new_xz.Bucket.ToBucketLinkage=D1_pin;
ExcvGlobal_new_xz.Bucket.ToCuttingEdge=D2_pin;
ExcvGlobal_new_xz.Bucket.ToCG=D3_pin;
%Linkage
ExcvGlobal_new_xz.Linkage.ToBucketCyl=E1_pin;
pin_struc =ExcvGlobal_new_xz;
end

Can you please suggest something to develop my code and remove such a problem. the original simOut has values from time slot 0 till 31 with a step of 0.1

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Ala'a Alshubbak 2023-2-27

在 MATLAB Online 中打开

I can explain my issue in more clear words:

I have a time series data represneted by simOut. I want to enter some values inside it according to the time.

I use this instruction to enter the data of column 1 and 3 according to time =I

A1_pin=A1_info(time==I,[1 3]);

unfortunatily this instruction works with some values of I and give an empty array with another values

the error will be because of having an empty matrix , which is totally wrong as there is data within the original simOut file.

for example on simOut @ time= 21.8 , the A1.data= [0.00266849360760513 0.00328331387131686 1.96413626062420]

but when try to access it using the above instruction it gives me this

A1_pin =

0×2 empty double matrix

Ala'a Alshubbak 2023-2-28

I solved it . thank you.

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getting time series data from simspace model

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