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Feeds
How to use Friedman's test as one-way ANOVA instead of two-way?
Hi Pegah, Yes, using the Friedman test in this context is appropriate. The Friedman test is a non-parametric alternative to the...
10 días hace | 0
Plot hotelling's confidence ellipse in PCA
Hi Karthik, To draw an error ellipse on a PCA plot, you can use the covariance matrix of the principal component scores to dete...
10 días hace | 0
how can I get the basic function of the cubic B-spline [N i,d (t)]? thank you.
Hi farouk, To compute the basic function of a B-spline, denoted as ( N_{i,d}(t) ), you need to follow the recursive definition ...
10 días hace | 0
PCA 3d Matrix
Hi Antonio, When dealing with 3D data in MATLAB and you want to apply PCA, you'll need to reshape your data into a 2D matrix be...
10 días hace | 0
How to define fittype object from custom function?
HI Fotaras, When defining a fittype object in MATLAB, it's crucial to ensure that your custom function returns an output of the...
10 días hace | 0
How do I normalise the first principal component in PCA such that its scalar product is equal to 1?
HI Kan, To ensure that the first principal component has a scalar product equal to 1 (i.e., it is normalized), you need to manu...
10 días hace | 0
using glmfit and/or manova
HI John, To analyze whether there is an overall difference in responses between two populations and to identify any specific st...
10 días hace | 0
How to perform linear discriminant analysis (LDA)?
Hi Joynjo, To perform Linear Discriminant Analysis (LDA) for dimensionality reduction and visualize the results, you can use MA...
10 días hace | 0
determine the normal to a plane using PCA
Hi Victor, Yes, you can use the principal component analysis (PCA) coefficients to determine the normal vector of your data pla...
10 días hace | 0
Two-Sample Kolmogorov-Smirnov Test Statistic
Hi Barbara , In order to compute the Kolmogorov-Smirnov test statistic as you've described, you can use the following MATLAB co...
10 días hace | 0
kernel PCA for process monitoring
Hi Raphael, Kernel PCA (KPCA) can be a powerful tool for process monitoring, especially when dealing with nonlinear data. To im...
alrededor de 1 mes hace | 0
How to Test Images in Kernel PCA
Hi Arkram, When using Kernel PCA (KPCA) for face recognition or any other application, the testing phase involves projecting ne...
alrededor de 1 mes hace | 0
How to interpret an answer given by PCA
Hi Yoolla, When performing PCA, especially with variables measured in different units, it's crucial to ensure that the data is ...
alrededor de 1 mes hace | 0
I need functions of B-Spline & NURBS in CAM Simulator to generate CAM profile.
Hi D, Generating a CAM profile using B-Splines and NURBS (Non-Uniform Rational B-Splines) involves creating smooth curves that ...
alrededor de 1 mes hace | 0
Calculating Average of Principle Component Analysis (PCA) Data
Hi Zack, To calculate the average of PCA-transformed data for each group, you'll need to follow these steps: Perform PCA. Org...
alrededor de 1 mes hace | 0
Missing data in repeated measure model
Hi Gabrielle, When using fitrm in MATLAB to fit a repeated measures model, handling missing data is an important consideration....
alrededor de 1 mes hace | 0
how to use PCA coefficients (princomp)
Hi A, To apply Principal Component Analysis (PCA) using MATLAB's princomp (or the updated pca function), and then transform you...
alrededor de 1 mes hace | 0
When using bootstrp, are paired variables resampled together?
Hi Macrina, In the bootstrp function in MATLAB, when you resample data that consists of paired observations (like LSAT scores a...
alrededor de 1 mes hace | 0
how to create dataset for classification and pattern recognition (neural network)
Hi Hanem, Creating a dataset for classification and pattern recognition involves several key steps. Organize your data Prepar...
alrededor de 1 mes hace | 0
How to perform 2-way repeated-measures Manova using RepeatedMeasuresModel?
Hi Christian, To perform a two-way repeated-measures MANOVA in MATLAB using the RepeatedMeasuresModel, you need to ensure that ...
alrededor de 1 mes hace | 0
Manova method for repeated measures model
Hi Jan, To perform a repeated measures ANOVA with unequal sample sizes without losing data, you can consider reshaping your dat...
alrededor de 1 mes hace | 0
How can I use a vector as a problem-dependent variable for fittype
Hi, To address the issues you're experiencing with fitting a series of experimental data sets using a custom equation in MATLAB...
alrededor de 1 mes hace | 0
Nodes number in BSpline Matlab
Hi Bowen, To extract a specific number of uniformly spaced points from a B-spline curve generated by MATLAB's spmak and fnplt f...
alrededor de 1 mes hace | 0
Transform points from PCA space to the original space!
Hi Najah, To transform the means of the Gaussian Mixture Model (GMM) back from the PCA-transformed space to the original featur...
alrededor de 1 mes hace | 0
How i can talk to support of Matlab website?
Hi Saleem, If you want to contact The Mathworks support team , you can contact them via the following link : https://www.mathw...
alrededor de 1 mes hace | 1
Cannot interpret pca results
Hi Jaime, When using Principal Component Analysis (PCA) to transform your data, it's important to understand what PCA does and ...
alrededor de 1 mes hace | 0
how can reduce my feature in each row of matrix ?
Hi Haleh, To reduce the dimensionality of your dataset from 256 features to 39 features (and then further to 25 features), you ...
alrededor de 1 mes hace | 0
Use a regressionGP model (from fitrgp()) to predict the gradient with uncertainty
Hi Evan, To compute the gradient of a Gaussian Process Regression (GPR) fit along with its uncertainties in MATLAB, you can fol...
alrededor de 1 mes hace | 0
If clr is a cell array of strings, the length of clr must be equal to the length of x, y and z.
Hi Yue, The error message you're encountering indicates that the clr parameter in the gscatter3 function expects a cell array o...
alrededor de 1 mes hace | 0
The relationship between SCORE and LOADING from PCA using princomp in MATLAB
Hi Torsionfree, When you perform PCA using MATLAB's princomp function (or its successor pca), the output score (also known as f...
alrededor de 1 mes hace | 0
