Diviner preprocess

Diviner Preprocessing Settings Window

The Diviner preprocessing settings window allows choosing or creating the preprocessing library to be used by Diviner. A preprocessing library consists of one or more preprocessing recipes. A preprocessing recipes contains one or more preprocessing methods. See this wiki page for more on preprocessing methods: preprocessing methods

Pre-set Libraries

The Diviner Preprocessing window has five pre-set libraries to choose from based on the type of data. The NIR/MID-IR and Raman libraries both have a Basic library and an Advanced library.

Choosing a library will show a table of the recipes in the Recipes section. The Recipes section has two tabs: one for the X-block preprocessing recipes and one for the Y-block preprocessing recipes.

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X-block Recipes Table

The X-block recipes table has three columns. The first column shows the preprocessing recipes to be used. The second column has a check box indicating if the recipe should be included in the Diviner run. The third column has a check box indicating if the recipe should be used for outlier detection. The outlier detection recipes will be used if the Outlier Detection setting is set to On. See this wiki page for more information on outlier detection: Diviner outlier detection

Y-block Recipes Table

The Y-block recipe table only has the first column, showing the preprocessing recipes to be used for the Y-block data and the second column, indicating if the recipe should be included.

Custom Libraries

Creating Custom Libraries

There are two ways to create a custom preprocessing library:

From a Pre-set Library

• Choose a pre-set library
• In the Recipes section click on the Add recipe button, or
• Select a recipe in the recipe table to remove and click on the Remove selected recipe button
• If adding a recipe, in the Preprocessing window create the recipe to add and select OK
• This will create a New Library in the Custom Library section that will be a copy of the pre-set library but will contain the added recipe or will not contain the recipe chosen for removal

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• Note: These steps will also work to create a new custom library from an existing custom library

From an Empty Library

• Select the Pre-set Library item or the Custom Library item
• In the Recipes section click on the Add recipe button
• In the Preprocessing window create the recipe to add and select OK
• This will create a New Library in the Custom Library section that will contain the added recipe.
• Note: A preprocessing recipe of None will be automatically added to both the X recipe table and the Y recipe table

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Save a Custom Library

Use the Save button to save a custom preprocessing library. An asterisk (*) indicates a change has been made and the preprocessing library needs to be saved.

Edit a Custom Library

Use the Edit Mode check box to edit a custom preprocessing library. This allows adding or removing recipes and changing the library name. If the Edit Mode box is not checked then this will behave the same as creating a new library from a pre-set library.

Import and Export Custom Library

Use the File → Import Library menu item to import a custom library.

Use the File → Export Library menu item to export a custom library. This menu it is disabled when the currently selected library is a pre-set library.

User Comments

Use the File → User Comments menu item to add comments to a custom library. This menu it is disabled when the currently selected library is a pre-set library.

Plot Preprocessed Data

To plot preprocessed data:

• Select the recipe of interest
• Click the Plot preprocessed data button
• The resulting plot will be automatically colored by a property of interest. Use the Color By drop down list to change the property that will be used to color by in the plot

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