Evri faq

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Importing / Exporting

How do I concatenate multiple files into a single DataSet?

How do I create a multivariate image from separate images?

How do I export PCA scores and loadings to a text file (to read into MS Excel, for example)?

How do I import three-way data into Solo or PLS_Toolbox?

Why can't I import a Horiba NGC file on my 64-bit computer?

Why can't SPCREADR read multiple files I've selected?

Why do some Excel files fail to import?

General

Can I do PARALIND in PLS_Toolbox?

Can I install PLS_Toolbox (or Solo) on more than one PC, such as on my desktop and laptop computer?

Can I use multiple class sets (categorical variables) together in a SIMCA, PLSDA, or LDA model?

Can you give me more information on the R-Squared statistic?

How are RMSEC and RMSECV related to R2Y and Q2Y I see in other software?

Convergence of PARAFAC. How much variation between models is expected a particular PARAFAC is fit multiple times with the same settings?

Does the software stop working if my maintenance expires?

How and where do I report a problem with PLS_Toolbox?

How are T-contributions calculated?

How are the ROC curves calculated for PLSDA?

How are the error bars calculated for a regression model and can they be related to a confidence limit (confidence in the prediction)?

How can I improve performance with PLS_Toolbox and Matlab on the Mac platform?

How do I assign classes for samples in a DataSet?

How do I build a classification model from a class set other than the first?

How do I choose between the different cross-validation leave-out options?

How do I cite/reference Eigenvector?

How do I interpret the ROC curves and Sensitivity / Specificity plots from PLSDA?

How do I make a DataSet backwards compatible?

How do I obtain or use a recompilation license for PLS_Toolbox?

How do I use the "custom" cross-validation option?

I keep getting "out of memory" errors when analyzing my data. What can I do?

What can I do if I get a java.lang.OutOfMemoryError error?

Nonnegativity (PARAFAC, PARAFAC2, Tucker): Why do I get negative scores when all modes are set to nonnegativity?

What are "Relative Contributions"?

What are the "Reduced" T² and Q Statistics?

What are the units used for RMSEC and RMSECV when cross-validating PLSDA models? Why do the cross-validation curves look strange for PLSDA?

What do the four Fit/Unique Fit statistics mean in MCR and PARAFAC models?

What internal tests are used to select "suggested" number of PCs?

What is PLS1 vs PLS2 and how do I create separate PLS1 models when I have a multi-column y-block?

What is the difference between a loading and a weighting?

Why are some axis labels and titles on my axes upside-down when I'm viewing images in MIA_Toolbox?

Why can't I recompile the PLS_Toolbox functions?

Why do I get the warning/notice "Missing Data Found - Replacing with "best guess" from existing model. Results may be affected by this action."

Why does PLS_Toolbox have a "boxplot" function that conflicts with the Mathworks Statistics Toolbox function of the same name?

Why does R2014b give me "Error using matlab.ui.Figure... Cannot convert double value to a handle" (or similar)?

Command Line

Do I have to specify all the options to a function or only the ones that are different from the defaults?

How are the Q-residuals and Hotelling's T² values calculated for PLS models?

How do I automate PCA analysis for multiple images?

How do I calculate my own T² and Q limits?

How do I manually calculate the limits for scores?

How do I calculate scores from a PLS or PLSDA model?

How do I change the default options for a function?

How do I interpret the Misclassification results reported by crossval?

How do I make PlotGUI send its plot to a new figure and not overwrite the current figure?

How do I retrieve and display predictions from a model structure in the command window?

How do I specify all options on the same line that contains the call to a function?

How do I use specific known pure component spectra with MCR (Multivariate Curve Resolution)?

How does PCA cross-validation work in PLS_Toolbox and Solo and how do I set up the command-line options to best use it?

Where do I find a description of the parafac2 constraints?

Where do I find the regression vector (B) and regression intercept (B₀) for a PLS or PCR model?

Why do I get different cross-validation results from the command-line crossval routine compared to the Analysis window?

Why does the PCAENGINE change the sign of the loadings returned by SVD?

Why is my model built using command line functions different from the same one I built in Analysis GUI?

Manual

What kind of training material comes with a PLS_Toolbox or Solo license?

GUI

How do I add confidence ellipses around groups of samples?

How do I add my own preprocessing methods to the Preprocess GUI?

How do I change the default plots created by the Scores button in the Analysis GUI?

How do I change the limit on how many rows or columns I can access in a plot (Plot Controls)?

How do I enable the PLS, PCR and/or SIMCA analysis methods in the Analysis GUI?

How do I export PCA, PLS or PCR predictions or scores to a text file or another program?

How do I limit my analysis to a sub-range of the variables in my data?

How do I make a prediction on new data using the Analysis or Regression GUI?

How do I see and/or include more than 20 factors in a PLS or PCR model when using Analysis GUI?

I am unable to print scores or loadings plots, or I am unable to print figures created by PlotGUI.

I get an error in PlotGUI "Invalid object handle" (error in plotds with MIA_Toolbox installed)

What is the "Figures" window used for and how do I keep all figures in the same window?