Answered
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...

11 months ago | 0

Answered
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...

11 months ago | 0

Answered
how to find principle component analysis of a woven fabric image? i need a code for this
Hi Gnanaprakash, Performing Principal Component Analysis (PCA) on images for compression involves reducing the dimensionality o...

11 months ago | 0

Answered
How to apply PCA on a cell containing matrices of images?
Hi Mahila, To apply PCA to a dataset containing multiple images, you need to convert the image data into a suitable matrix form...

11 months ago | 0

Answered
use pca to perform bss
Hi Raj, Blind Source Separation (BSS) is a technique used to separate a set of source signals from a set of mixed signals witho...

11 months ago | 0

Answered
score matrix in PCA study does not match with the scores shown on bi-plot.
Hi Manpreet, When you perform PCA using MATLAB's pca function, the score matrix contains the principal component scores for eac...

11 months ago | 0

Answered
Finding cubic spline equations by 3 data points
Hi Tatai, When using MATLAB's spline function, it creates a piecewise polynomial (pp) form to represent the cubic spline. This ...

11 months ago | 0

Answered
help needed with fraction of unexplained variance
Hi Blaise, When you perform Principal Component Analysis (PCA), you typically assess how much of the total variance in your dat...

11 months ago | 0

Answered
Should I use PCA, Factor Analysis or ICA for this problem?
Hi Arnold, To analyze which factors (e.g., S&P, Barclays, Vanguard) influence Apple's returns, you can use multiple linear regr...

11 months ago | 0

Answered
ActiveSetMethod: entropy | GPR
Hi Marius, When using Gaussian Process Regression (GPR) with a large dataset in MATLAB, you can employ the 'FitMethod', 'sd' op...

11 months ago | 1

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Answered
can fitrm handle unbalanced data (without decimating it)? if not, what alternative will still allow me to see (or even set) the response covariances?
Hi Ben, For highly unbalanced data, I recommend exploring linear mixed-effects models using fitlme in MATLAB. They provide a fl...

11 months ago | 0

Answered
I'm getting an error when I was using compute_mapping function for pca, please give me any suggestions how can I solve it?
Hi Bhawna, The error message you're encountering suggests that there's an issue with the number of arguments being passed to a ...

11 months ago | 0

Answered
repeated anova for two groups with time course data
Hi Spikes, To compare two groups subjected to repeated measures across different days using repeated measures ANOVA in MATLAB, ...

11 months ago | 0

Answered
Bicubic B-spline surface
Hi Anna, To work with splines in 3D and visualize them in MATLAB, you can use the nrbmak and nrbeval functions from the NURBS t...

11 months ago | 0

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Stepwise Regression and PCA
Hi Adnan, Stepwise Regression: Stepwise regression is a method of fitting regression models in which the choice of predictive ...

11 months ago | 0

Answered
Latin hypercube sample from beta distribution
Hi Eagle To generate samples from a beta distribution using Latin Hypercube Sampling (LHS), you can use the lhsdesign function ...

11 months ago | 0

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PCA Help
Hi Zubair, Your approach to using PCA to compare two datasets is on the right track. However, there are a few things to conside...

11 months ago | 0

Answered
Pros and Cons of PCA feature Selection vs Single Valued Features Like, Mean, Standard Variation
Hi Arbab, Selecting between Principal Component Analysis (PCA) and single-valued features (i.e., individual features selected b...

11 months ago | 0

Answered
Other way or suggestion to build Bezier surface
Hi Malina, 1) Building a Bézier Surface in MATLAB: If you don't have built-in functions for Bézier surfaces in your version of...

11 months ago | 0

Answered
How can we implement PCA for array of 512 feature maps of size 39*39 to get an output of array of x feature maps of size 39*39, where x is dimension desired after applying PCA.
Hi Shubham, To apply PCA to a 3D matrix of feature maps without flattening them, you'll need to treat each 39x39 feature map as...

11 months ago | 0

Answered
How can we find the angle or orientation of the 1st Principal Component
Hi Nabin, To calculate the angle of the first principal component after performing PCA on a set of 2D coordinates, you can foll...

11 months ago | 0

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Which algorithm type does rowexch use?
Hi Tobias, The 'rowexch' function in MATLAB is used for generating D-optimal designs, which are a type of experimental design. ...

11 months ago | 0

Answered
How do I use the entropy-based selection of samples with fitrgp correctly?
Hi Janine, The fitrgp function in MATLAB is used to fit Gaussian Process Regression (GPR) models. When dealing with large datas...

11 months ago | 0

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PCA, svd, compare two groups.
Hi Sas, Yes, your approach makes sense and is a common method for projecting new data onto the principal component space derive...

11 months ago | 0

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comparing results of PCA and NNMF - what percentage of the original data's variance is retained?
Hi Blaise, To compare the results of Principal Component Analysis (PCA) and Non-negative Matrix Factorization (NNMF) in terms o...

11 months ago | 0

Answered
Why is PCA returning only one component when I have 50 variables?
Hi Kim, When performing PCA in MATLAB, you should expect the coeff matrix to contain as many columns as there are variables in ...

11 months ago | 0

Answered
PCA using Matlab, SPSS
Hi Amrutha, When comparing PCA results between MATLAB and SPSS, there are several factors that can lead to differences in the p...

11 months ago | 0

Answered
Correlation among time scaled data with variable size
Hi Aneesh, Exploiting correlation among time-scaled data with variable sizes can be challenging, especially when dealing with t...

11 months ago | 0

Answered
Error with fitrm - error using setdiffR2012a
Hi Irene, The error you're encountering when using the fitrm function in MATLAB is likely due to a mismatch in the expected inp...

11 months ago | 0

Answered
How can I weight my observations for a MANOVA analysis
Hi Emmanuel, Performing a MANOVA (Multivariate Analysis of Variance) with weighted observations directly using MATLAB's manova1...

11 months ago | 0