Error: Invalid text character. Check for unsupported symbol, invisible character, or pasting of non-ASCII characters.

Question

Josh Riesenberg 2023-4-26

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1953679-error-invalid-text-character-check-for-unsupported-symbol-invisible-character-or-pasting-of-non

回答： Dheeraj 2023-8-9

clc;
close all;
clear all;
mass=[140 140 185 135 180 165 240 170 130 160 118 148 140 150 115 130 ]; % lbs
for part=1:16 %participants
    for c=1:4 %conditions: squat vs stoop and close vs far
        
        clear markers shoulder elbow wrist L5/S1 object
        if c==1
            cond='_squat_close';
        else if c==2
                cond='_squat_far';
        else if c==3
                cond='_stoop_close';
        else
            cond='_stoop_far';
        end
        end
        end
        mass1(part)=mass(part)*4.44822; % to newtons
        filename=['P' num2str(part),cond]; % reads in files
        load([filename, '.mat']);
        trial=['P' num2str(part), cond];
        condition=[cond, num2str(part)];
        
        Markers=eval([condition, '.Trajectories.Labeled.Data'])./1000;
        markernames=eval([condition, '.Trajectories.Labeled.Labels']);
        markernames(5)={'L5S1'};
        
        Markers=permute(Markers,[3,1,2]);
        Markers=Markers(:,:,1:3);
        num_marks=length(markernames); % dynamically assess number of markers
        
        fs.video=eval([condition, '.FrameRate']); % extract sampling frequency of camera system
        
        [butter_b,butter_a] = butter(4,2*10/fs.video); % Video at 10 Hz
        for i = 1:3 
            Markers(:,1:num_marks,i) = filtfilt(butter_b,butter_a,Markers(:,1:num_marks,i));
        end
        clear markers
        % Name Markers 
        for p = 1:num_marks
            eval(['markers.', markernames{p} '= squeeze(Markers(:,p,1:3));']);
            %                 eval(['markers.', markernames{pa} '= squeeze(Markers(:,pa,1:3));']);
        end; clear Markers
        
        
        
        
        percent_initial = (0:1/fs.video:(size(markers.shoulder(:,1))-1)/fs.video);
        percent_initial = (percent_initial/percent_initial(end))*100;
        percent_final = (0:100);
        
        markers.r_shoulder=markers.r_shoulder';
        markers.l_shoulder=markers.l_shoulder';
        markers.elbow=markers.elbow';
        markers.wrist=markers.wrist';
        markers.L5S1=markers.L5S1';
        markers.object=markers.object';
        
        normalized_marker_r_shoulder=interp1(percent_initial, markers.r_shoulder(1,:), percent_final);
        normalized_marker_l_shoulder=interp1(percent_initial, markers.l_shoulder(1,:), percent_final);
        normalized_marker_elbow=interp1(percent_initial, markers.elbow(1,:), percent_final);
        normalized_marker_wrist=interp1(percent_initial, markers.wrist(1,:), percent_final);
        normalized_marker_l5S1=interp1(percent_initial, markers.L5S1(1,:), percent_final);
        normalized_marker_object=interp1(percent_initial, markers.object(1,:), percent_final);
        
        xlswrite('data4.xlsx', mass1(part), [num2str(part)], 'KK3');
        if c==1
            xlswrite('data4.xlsx', normalized_marker_r_shoulder', [num2str(part)], 'B3');
            xlswrite('data4.xlsx', normalized_marker_l_shoulder', [num2str(part)], 'C3');
            xlswrite('data4.xlsx', normalized_marker_elbow', [num2str(part)], 'D3');
            xlswrite('data4.xlsx', normalized_marker_wrist', [num2str(part)], 'E3');
            xlswrite('data4.xlsx', normalized_marker_l5S1', [num2str(part)], 'A3');
            xlswrite('data4.xlsx', normalized_marker_object', [num2str(part)], 'F3');
        else if c==2
                xlswrite('data4.xlsx', normalized_marker_r_shoulder', [num2str(part)], 'L3');
                xlswrite('data4.xlsx', normalized_marker_l_shoulder', [num2str(part)], 'M3');
                xlswrite('data4.xlsx', normalized_marker_elbow', [num2str(part)], 'N3');
                xlswrite('data4.xlsx', normalized_marker_wrist', [num2str(part)], 'O3');
                xlswrite('data4.xlsx', normalized_marker_l5S1', [num2str(part)], 'K3');
                xlswrite('data4.xlsx', normalized_marker_object', [num2str(part)], 'P3');
        else if c==3
                xlswrite('data4.xlsx', normalized_marker_r_shoulder', [num2str(part)], 'V3');
                xlswrite('data4.xlsx', normalized_marker_l_shoulder', [num2str(part)], 'W3');
                xlswrite('data4.xlsx', normalized_marker_elbow', [num2str(part)], 'X3');
                xlswrite('data4.xlsx', normalized_marker_wrist', [num2str(part)], 'Y3');
                xlswrite('data4.xlsx', normalized_marker_l5S1', [num2str(part)], 'U3');
                xlswrite('data4.xlsx', normalized_marker_object', [num2str(part)], 'Z3');
        else
            xlswrite('data4.xlsx', normalized_marker_r_shoulder', [num2str(part)], 'FF3');
            xlswrite('data4.xlsx', normalized_marker_l_shoulder', [num2str(part)], 'GG3');
            xlswrite('data4.xlsx', normalized_marker_elbow', [num2str(part)], 'HH3');
            xlswrite('data4.xlsx', normalized_marker_wrist', [num2str(part)], 'II3');
            xlswrite('data4.xlsx', normalized_marker_l5S1', [num2str(part)], 'EE3');
            xlswrite('data4.xlsx', normalized_marker_object', [num2str(part)], 'JJ3');
        end
        
        end
        end
    end
end
Error using load
Unable to find file or directory 'P1_squat_close.mat'.

8 个评论
显示 6更早的评论隐藏 6更早的评论

Josh Riesenberg 2023-4-27

I have been retyping the program out and it will run without that syntax error until I get to the following 3 lines:

Markers=eval([condition, '.Trajectories.Labeled.Data'])./1000;

markernames=eval([condition, '.Trajectories.Labeled.Labels']);

markernames(5)={'L5S1'};

If those are commented out, the program will run without the syntax error, but if even one of the is uncommented, it gives the syntax error

Walter Roberson 2023-4-27

在 MATLAB Online 中打开

@Josh Riesenberg

You ran into a problem using eval() when you tried to dynamically generate variable names. Now start to get an idea why we have been telling you that you should not dynamically generate variable names.

After you have done

filename=['P' num2str(part),cond]; % reads in files

please show us the output of

whos('-file', filename)

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Answer 1

Dheeraj 2023-8-9

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1953679-error-invalid-text-character-check-for-unsupported-symbol-invisible-character-or-pasting-of-non#answer_1285222

Hi,

It is a good practice to generate variable names at the compile time as generating them at the run time is not advised as it creates untraceable bugs. You could refer to this link for better understanding.

http://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval