Beantwortet
Error using vertcat Dimensions of arrays being concatenated are not consistent.
In the RRTSS1 script, "dist" is defined inside an "if" statement without any "else" for "dist" value. So if Reach=0, then ans =...

fast 7 Jahre vor | 0

Beantwortet
How to divide data into train/valid/test sets such that one sample from every class is selected?
Set 'Stratify' option to 'True'. cv = cvpartition(data(:,1),'KFold',5,'Stratify',true);

fast 7 Jahre vor | 0

| akzeptiert

Beantwortet
Determine first and second derivatives, without using builtin diff function, using forward differencing with 0 dx error
dfdx = zeros(size(f)); d2fdx2 = zeros(size(f)); dfdx(2:end) = f(2:end)-f(1:end-1); d2fdx2(2:end) = dfdx(2:end) - dfdx(1:e...

fast 7 Jahre vor | 0

| akzeptiert

Beantwortet
How to calculate the optimal thickness
Assuming, optimal thickness yields maximum refraction, m = find(R==max(R)) optimal_thickness = d(m) % ans = % 1.9192e-07...

fast 7 Jahre vor | 0

| akzeptiert

Beantwortet
Problem with the TreeBagger Command
The Training_Output variable has to be a vector of size 6768X1 instead of a matrix.

fast 7 Jahre vor | 0

Beantwortet
how i can use confusion_matrix for result of image classification using knn?
yhat = predict(model,x); C = confusionmat(y,yhat)

fast 7 Jahre vor | 0

Beantwortet
How do I improve my result of KNN classification using confusion matrix?
yhat = predict(model,x); [C,order] = confusionmat(y,yhat); Use this help file to understand how to use C and order: https://w...

fast 7 Jahre vor | 0

Beantwortet
Convolution of two piecewise signals returning zero (exercise 2 in attachment)
t = -10:1/10:10; x = zeros(1,length(t)); h = zeros(1,length(t)); for i=1:numel(t) if t(i)<0 || t(i)>2 x(i) = 0;...

fast 7 Jahre vor | 0

| akzeptiert

Beantwortet
transform column and row data of logical matrix to vector(N X 2)
logical_matrix = [0 0 0 0; 0 1 0 0; 0 0 0 0; 0 0 1 0; 0 1 0 1]; [i,j] = find(logical_matrix); vector_matrix = [...

fast 7 Jahre vor | 0

| akzeptiert