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Signal Decomposition for a mixed signal
t=0:0.00001:0.3; x1=(exp(-3*t)).*(0.2*sin(2*pi*400*t)); x2=1.2+(exp(-1.5*t)).*(1.1*sin(2*pi*40*t+pi/6)); x3=(exp(-5*t)).*(0.8...

4年以上前 | 0

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Hi I am having a hard time using the getfield. It says there is an error.
lat = getfield(latStruct,latField{1});

4年以上前 | 0

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Index exceeds matrix dimensions
I tried this, it worked fine. No error: date_start = "2015-01-01"; date_end = "2019-10-01"; char_date_start= char(date_start)...

4年以上前 | 0

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Force nodes to my graph
plot(digraph(o,d,[],24))

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how can I creat a matrix of all possible combinations of zero and ones across eight digits.
decimalVector= [0:1:(2^8)-1]'; binaryMatrix = de2bi(decimalVector);

4年以上前 | 2

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Exporting model to classify new data
1.Save: (assuming you want to save/export each classifier in separate files) use save(). 2. ROC curve: use perfcurve() and plot...

4年以上前 | 1

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IFFT of Convolution equivalence
Sorry for the confusion. Here is what I tried: a1 = randi(50,8,1); b1 = randi(50,8,1); x = complex(a1,b1) a2 = randi(50,8,1)...

4年以上前 | 1

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Turning a matrix into a vector issue where it truncates (easy question)
finalMessage = reshape(messageSymbolsDemod,[],1); % from matrix to vector finalMessage = padarray(finalMessage,16-length(finalM...

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sub2ind gives error: Error using sub2ind (line 43) Out of range subscript.
In your code, xs contains negative values, which can't be the column indices. Also, sc is only 1004x1144. But the values of xs ...

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()-indexing must appear last in an index expression.
for i=1:1:w for j=2:1:h if (min(Idark(i,j))>= A(i,j-1)) A(i,j)=min(Idark(i,j)); else ...

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For loop for a comparing values of a column vector with a value
costs=[Fail]'; costs = repelem(costs,1,length(PM_cyc)); output = zeros(size(costs)); for i = 1:length(PM_cyc) output(fin...

4年以上前 | 1

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Function to return poisson random variable
random('Poisson',lambda)

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Average histogram of R,G,B histograms
I=imread('Capture.PNG'); [counts1,edges1]=histcounts(I(:,:,1),linspace(0,1,256)); [counts2,edges2]=histcounts(I(:,:,2),linsp...

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How can I import dataset in specific range
i=input('Enter a start row: '); j=input('Enter a end row: '); k=input('Enter a start column: '); t=input('Enter a end column:...

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matching numbers between variables
GroupZERO(ismember(GroupZERO,outliers))=[]

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Logical index multiple columns
I believe you are trying to find the row-indices of A, where the row contains a 1, and then extract those rows from B. In that c...

4年以上前 | 0

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Empty Matrix with Dynamic Fertility Model
Looks like your indexing is off in some places: simchoice = zeros(1000,20) %Looping for 1000 women for i = 1:1000 ...

4年以上前 | 0

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How to plot histogram of difference of two images using MATLAB
histogram(image_of_dif) will plot the histogram showing the distribution of values (both positive and negative differences).

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How can I solve this error with MATLAB CODER?
In your example you can certainly preallocate the variable: Conv_out = zeros(1,2*length (Conv_In));

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Plotting an equation raised to a variable.
fun1 = a_n(1)*(t.^(n)) .^ is a pointwise (elementwise) operation, that means it operates on arrays of same length or one of the...

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Normality test temperature data
Since linear shift won't affect the distribution, you can shift the data and perform log transformation. %% test data data =...

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how to reverse a string using a FOR loop
Update: myString = "abcdefg"; myChar = char(myString); % using array indexing myNewStr = string(myChar(end:-1:1)); % us...

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How do I combine data tables where there are different row lengths?
T1(ismember(table2array(T1(:,1)),table2array(T2)),2) = T2; T1(ismember(table2array(T1(:,1)),table2array(T3)),3) = T3;

4年以上前 | 1

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SVM classifier on digits dataset
fitcsvm() is not designed to train directly on 28x28 images. You need to extract feature vectors for each image. After feature e...

4年以上前 | 0

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How do I the minimum points on a 3D surface diagram (x,y,z) as a function of the x and y variables?
I am assuming your x-axis is phi and y-axis is h: min_phi = min(E,[],1); min_h = min(E,[],2);

4年以上前 | 1

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How can I get data from histogram ?
I believe you are looking for histcounts() instead of histogram(). [counts, centers] = histcounts(data,'BinWidth',0.005); prob...

4年以上前 | 1

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How do you plot multiple best fit lines to one graph?
On cftool, you can open new fits for the same data in new tabs. So ... no, not on the same figure. But .. you can save the fit...

4年以上前 | 0

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Concatinate 4D Time-Signals
You want to concatenate on the dim which is not same for both, right? Catq1 = cat(1,I1,I2); % OR Catq1 = [I1;I2];

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How to get specific data from specified rows and variables in a table?
S = A - Table.Sensitivity(Table.Sensor_type=="COB4_St1")

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Truncate a two dim array based on contents of a particular column
N = input('Number of rows: '); A = rand(N,34); A(:,12) = randi([0 3],N,1); % simple version if 12th col only always has 0,1,...

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