Dot indexing is not supported for variables of this type

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Aniket Manjare
Aniket Manjare 2020 年 12 月 18 日
編集済み: Walter Roberson 2020 年 12 月 20 日
i am trying to run this code but is not working can you please help me with this
%%
%Data Collection and Labeling
clc;
clear all;
labelPoints = {[2,50],[51,80]};
NoOfFailureModes = 2;
estimateRULFlags = [false, true];
path = 'Datasets/';
labels = {[categorical("OFF"),categorical("ON"),categorical("DUCT BLOCKAGE")],[categorical("OFF"),categorical("ON"),categorical("ROTOR IMBALANCE")]};
rawdata = cell(NoOfFailureModes);
data = cell(NoOfFailureModes);
for i = 1:NoOfFailureModes
rawdata{i} = readtable([path 'Dataset' num2str(i) '.csv'],'Delimiter',','); %Read the downloaded csv file
data{i} = dataParsing(rawdata{i},labelPoints{i},labels{i},i); %Parse the rawdata
end
function data = dataParsing(rawdata,labelPoints,labels,dataset)
bias = 44;
noOfDataPoints = length(rawdata.entry_id);
labelPoints = [0 labelPoints noOfDataPoints];
for i = 1:length(labelPoints)-1
Label(labelPoints(i)+1:labelPoints(i+1),:) = labels(i); %Create Labels for the data points
end
j = 1;
if(dataset == 2)
offset = 0;
else
offset = 2000;
end
for i = 1:noOfDataPoints
text1 = strsplit(rawdata.field1{i},',');
text2 = strsplit(rawdata.field2{i},',');
text3 = strsplit(rawdata.field3{i},',');
text4 = strsplit(rawdata.field4{i},',');
text5 = strsplit(rawdata.field5{i},',');
text6 = strsplit(rawdata.field6{i},',');
var = zeros(length(text1)-1,6);
flag = true;
for k = 1:length(text1)-1 %to neglect the last comma, use -1
var(k,1) = str2num(text1{k})-bias;
var(k,2) = str2num(text2{k})-bias;
var(k,3) = str2num(text3{k})-bias;
if(var(k,1) ~= -bias || var(k,2) ~= -bias || var(k,3) ~= -bias ) %Turning the device off and on will reset the first data set to all zeroes
var(k,4) = str2num(text4{k})-bias;
var(k,5) = str2num(text5{k})-bias;
var(k,6) = str2num(text6{k})-bias;
else
flag = false;
break;
end
end
if(flag) %accept a valid datapoint
data.Label(j,:) = Label(i);
data.sno(j,:) = rawdata.entry_id(i) + offset;
data.X(j,:) = [var(:,1);var(:,4)];
data.Y(j,:) = [var(:,2);var(:,5)];
data.Z(j,:) = [var(:,3);var(:,6)];
j = j+1;
end
end
data = struct2table(data);
end
  2 件のコメント
Adam Danz
Adam Danz 2020 年 12 月 18 日
Provide the full error message, tell us what line is causing that error (the line number is included in the error message but we don't see line numbers so just tell us the line), and describe what variables are used in that line (class & size).
Aniket Manjare
Aniket Manjare 2020 年 12 月 18 日
Here i have scrrenshot of error and i have also attaches the data set

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採用された回答

Walter Roberson
Walter Roberson 2020 年 12 月 19 日
for i = 1:noOfDataPoints
var1 = rawdata.field1(i);
var2 = rawdata.field2(i);
var3 = rawdata.field3(i);
var4 = rawdata.field4(i);
var5 = rawdata.field5(i);
var6 = rawdata.field6(i);
%Turning the device off and on will reset the first data set to all zeroes
if var1 ~= 0 || var2 ~= 0 || var3 ~= 0
var = [var1, var2, var3, var4, var5, var6] - bias;
data.Label(j,:) = Label(i);
data.sno(j,:) = rawdata.entry_id(i) + offset;
data.X(j,:) = [var(1);var(4)];
data.Y(j,:) = [var(2);var(5)];
data.Z(j,:) = [var(3);var(6)];
j = j+1;
end
end
  2 件のコメント
Aniket Manjare
Aniket Manjare 2020 年 12 月 19 日
Thanks, i have labelled my data with code, Thakyou
Aniket Manjare
Aniket Manjare 2020 年 12 月 19 日
I am facing the issue with the further part of the code. Please help me to solve this
The error is occuring here ar this point
P1 = P2(1:L/2+1)
Please find the attachment for program file .m and datasets files, Kindly help
below is the code for the exploration:
%%
%Data Exploration
fs = 100; %Sampling Frequency
L = 100; %Length of each data sample is 100 sensor readings
f = fs*(0:(L/2))/L; % Frequency bins until Nyquist Frequency at which FFT is computed
convertToMinutes = (1/fs)/60; %Convert sample number to minutes 0.01/60
votype = 'VideoWriter'; %Record the Exploration to view it again
vo = VideoWriter('Data Exploration Video', 'MPEG-4');
set(vo, 'FrameRate', 5);
open(vo);
for i = 1:NoOfFailureModes
NoOfDataPoints = height(data{i});
x = zeros(L*NoOfDataPoints,0);
y = zeros(L*NoOfDataPoints,0);
z = zeros(L*NoOfDataPoints,0);
figure;
set(gcf,'Visible','on')
for j = 1:NoOfDataPoints
data{i}.X_FFT(j,:) = computeFFT(data{i}.X(j,:)-mean(data{i}.X(j,:)),L);
data{i}.Y_FFT(j,:) = computeFFT(data{i}.Y(j,:)-mean(data{i}.Y(j,:)),L);
data{i}.Z_FFT(j,:) = computeFFT(data{i}.Z(j,:)-mean(data{i}.Z(j,:)),L);
x((j-1)*L+1 : j*L) = data{i}.X(j,:);
y((j-1)*L+1 : j*L) = data{i}.Y(j,:);
z((j-1)*L+1 : j*L) = data{i}.Z(j,:);
t = (1:j*L)*convertToMinutes;
subplot(3,2,1);
plot(t,x);
title({"Experiment: " + num2str(i) , "Time Domain"});
xlabel("time (min.)",'FontWeight','bold');
ylabel("X",'rotation',0,'FontWeight','bold');
subplot(3,2,2);
bar(f,data{i}.X_FFT(j,:));
title({"Sample: " + num2str(j) + "; Label: " + char(data{i}.Label(j)), "Frequency Domain"});
xlabel("frequency (Hz)",'FontWeight','bold');
ylabel("X",'rotation',0,'FontWeight','bold');
subplot(3,2,3);
plot(t,y);
xlabel("time (min.)",'FontWeight','bold');
ylabel("Y",'rotation',0,'FontWeight','bold');
subplot(3,2,4);
bar(f,data{i}.Y_FFT(j,:));
xlabel("frequency (Hz)",'FontWeight','bold');
ylabel("Y",'rotation',0,'FontWeight','bold');
subplot(3,2,5);
plot(t,z);
xlabel("time (min.)",'FontWeight','bold');
ylabel("Z",'rotation',0,'FontWeight','bold');
subplot(3,2,6);
bar(f,data{i}.Z_FFT(j,:));
xlabel("frequency (Hz)",'FontWeight','bold');
ylabel("Z",'rotation',0,'FontWeight','bold');
drawnow;
writeVideo(vo, getframe(gcf));
end
end
close(vo);
%%
%%
%Helper Functions
function P1 = computeFFT(X,L)
Y = fft(X);
P2 = abs(Y/L);%absolute value
P1 = P2(1:L/2+1)
P1(2:end-1) = 2*P1(2:end-1);
end
%%

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その他の回答 (1 件)

Cris LaPierre
Cris LaPierre 2020 年 12 月 18 日
The error appears to be line 36
text1 = strsplit(rawdata.field1{i},',');
The current error is because the variable field1 contains numeric info. Brace indexing - {i} - is not valid for a vector of doubles. Use parentheses instead.
This will lead to your next error. The function strsplit is for text data. You will get another error:
Error using strsplit (line ##)
First input must be either a character vector or a string scalar.
  4 件のコメント
Aniket Manjare
Aniket Manjare 2020 年 12 月 19 日
Please find the data set for 6 fields,
Please help me solve this problem, i have tried alot, mistakenly i have previously loaded the wrong data set
Here i have attached the file
  1. Labelling.m
  2. dataset1.csv
  3. dataset2.csv
Aniket Manjare
Aniket Manjare 2020 年 12 月 20 日
編集済み: Walter Roberson 2020 年 12 月 20 日

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