# Evri faq

## 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?

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 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?

What are "Relative Contributions"?

What are the "Reduced" T^{2} and Q Statistics?

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?

## Command Line

How are the Q-residuals and Hotelling's T^{2} values calculated for PLS models?

How do I automate PCA analysis for multiple images?

How do I calculate my own T^{2} 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)?

Where do I find a description of the parafac2 constraints?

Where do I find the regression vector (B) and regression intercept (B_{0}) for a PLS or PCR model?

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

## 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 load labels, classes or an axisscale for my data in the Analysis GUI?

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?

How do I view a table of predictions, scores, or other data?

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?

## Installation

Can you describe an easy way to switch from one version of PLS_Toolbox to another?

Do any PLS_Toolbox functions conflict with the Mathworks Toolboxes?

Some or all of the PLS_Toolbox functions do not work.

How do I calculate / verify the MD5 or SHA1 hashes on a file?

How do I install PLS_Toolbox on two different versions of Matlab?

How do I install multiple Eigenvector products?

How do I use PLS_Toolbox or Solo with a license server when I don't have access to the network?

How is PLS_Toolbox installed with a network copy (site-license) of Matlab?

I get a warning saying the evriio.p file was p-coded from an old MATLAB version.

I loose my floating license if I am inactive in Matlab. How do I keep a license checked out?

Trouble downloading, installing, starting, or running Solo.

What is the version compatibility between PLS_Toolbox and Matlab?

What's a good way to add or remove PLS_Toolbox from my path?

Why am I unable to make changes to the path in MATLAB on Windows 7?

Why do I get "attempt to run script as a function" errors after I install PLS_Toolbox?

Why do I get an error that my license code is not valid?

Why do I have to reenter my license code every time I start?

Why do I need to run EVRIINSTALL when installing PLS_Toolbox?

Why is the PLS_Toolbox help information not available in my Matlab help window?