![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1202578/image.png)
Error using Battery.loadDataFromMatFile Unable to locate voltage variable in file '03-11-17_08.47 25degC_5Pulse_HPPC_Pan18650PF.mat'
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Hey everyone. I just run the Example_DischargePulseEstimation.m code which is prepared code from MATLAB. To run the code I wrote this to command
open('Example_DischargePulseEstimation.m')
and clicked enter.It worked but I want to use this code for another "*.mat" data file.So I just copy paste a code and adapt it to my data but MATLAB constantly gives error.
The Code That I used for Another data:
psObj = Battery.PulseSequence;
disp(psObj)
FileName = '03-11-17_08.47 25degC_5Pulse_HPPC_Pan18650PF.mat';
[time,voltage,current] = Battery.loadDataFromMatFile(FileName);
addData(psObj,time,voltage,current);
The Error It's given:
Error using Battery.loadDataFromMatFile
Unable to locate voltage variable in file '03-11-17_08.47 25degC_5Pulse_HPPC_Pan18650PF.mat'
Error in Battery.loadDataFromMatFile Error in kod3 (line 33)
[time,voltage,current] = Battery.loadDataFromMatFile(FileName);
The data in code is in attached file!!
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Antworten (1)
Gowthami
am 22 Nov. 2022
Hello Hanife,
It is my understanding that you are getting an error while loading data from MAT file.
I could see that executing the below command returning 'meas: [1×1 struct]' ,
open '03-11-17_08.47 25degC_5Pulse_HPPC_Pan18650PF.mat'
All the fields are present inside the meas struct, Because of this you are getting error as 'Unable to locate voltage variable in file '03-11-17_08.47 25degC_5Pulse_HPPC_Pan18650PF.mat''
The function 'Battery.loadDataFromMatFile(FileName)' is expecting the filed names as current, time, and voltage as shown in the below image,
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1202578/image.png)
Please refer to the below link for more information on saving a few specific fields into a MAT file - https://www.mathworks.com/help/matlab/import_export/load-parts-of-variables-from-mat-files.html
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