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Introduction Executing NWA Analyses Quality Analyst Configuring NWA Policy Quality Analyst Web Server     Adding and Editing an NWA Analysis

 

Quality Analyst lets you perform several types of statistical analyses on your data such as One-way ANCOVA, and Regression Analysis.

OOB LabVantage supplies several predefined Analyses that can be run from Stability List Pages. See Stability Analytics for a list and descriptions. See Running NWA Analyses for detailed information about running analyses.

NWA integration framework parallels the LabVantage Reporting framework. See Reports for details about registering new Reports, defining parameters (arguments) and executing Reports.

 

The following graphic illustrates how Quality Analyst connects directly to a LabVantage database using an ODBC connection, performs the Analysis and identifies output formats.

 

In order to run an Analysis on Quality Analyst, you need to define the following:

NWA DataSet

Quality Analayst uses DataSets to store data and the information needed to describe the data, and to manage charting and analysis. DataSets consist of two files, a Data File and a corresponding header File. Data Files (.DAT) contain the actual quality measurements or data obtained directly from quality control procedures. header Files (.NWH) contain all the file-structure information needed to perform SQC charting and analysis on the corresponding Data File.

As part of NWA integration with LabVantage, a DataSet definition is provided to obtain data from LabVantage and is used to run the various analyses. The Stablity Data Set definition is specified in the files StabilityAnalytics.Dat and StabilityAnalytics.Nwh for example, that need to be deployed and configured. See NWA Installation and Deployment for detailed information.

NWA Commands

WA provides a rich command set that is used to define how to perform different kinds of analyses and what to do with the outputs. These commands are specified in .Run files.

Note that the .Run files can take one or more input parameters (prefixed by ^ symbol)

As part of NWA integration, LabVantage has defined 12 different kinds of Stability Analytics, the .RUN files are included and need to be deployed to run them. See NWS Deployment for detailed information.

 

Quality Analyst works with Quality Analysis Web Server (QAWS) to generate charts and Exception Reports that can be viewed, or a QA graphics file that can be viewed, organized and printed.

QAWS request includes the following:

•	A reference, a name given to each .RUN file and registered with QAWS.
•	Specifying the format of the output required, .png, .jpg, or .nwg (you must have the NWA Graphics Viewer installed on the client to view this).
•	A list of CGI-variables, that correspond to the various input parameters used by the .RUN file as well as any .DAT files referenced by it.

In addition to the Web Server, QAWS also has a Page Server where files generated by .RUN files can be written. These files can be accessed from the Quality Analytics page server. See NWA Policy for details about defining the location of the Page Server and port number.

 

In addition to the LabVantage pre-defined Analyses you can define a new NWA Analysis or edit a pre-defined Analysis to meet your needs. Navigate to:

Sys Admin

→

Reporting

→

NWA Analyses

Note: Since NWA is a licensed module, all users that need to access to the NWA functionality need to be given access to the NWA Module.

The NWA Analysis List displays. The list of NWA Analyses already defined in the system are shown. See Supplied NWA Analyses for a list and description of the supplied Analyses.

Adding and Editing an NWA Analyses

Click "Add" to create a new NWA Analyses or click "Edit" to modify a selected Analysis.

The Basic information configured for an NWA Analysis is:

Field	Description
NWA Analysis	Name of the Analysis.
Description	What the Analysis does.
NWA Reference	Refers to the "reference" defined with QAWS for a specific .RUN file that has to be executed for performing this Analysis.
Generate Analysis Event	A flag that determines if an NWA Analysis Event is created or not, whether it is a controlled report or not.

The next section defines the various inputs to the NWA Analysis Event.

Event Description Rule allows you to customize the description column of the Analysis Event by specifying some of the "parameters" defined under the "CGI Variables" tab (See below). In the above example you can see how the parameter "conditionlabel" is referred to in the description.

CGI Variables

Each Analysis has a predefined set of input parameters that are defined and constitute the list of CGI Variables that are passed on to the NWA QAWS in order to run the analyses.

CGI Variables can be defined in the Tab shown above. The following parameters are specified for each of the parameters:

Field	Description
title	The title displayed for the parameter in the "Report Input Page", the prompt page displayed when executing the NWA Analysis.
Param	The name of the CGI-variable, corresponds to the names used in NWA .DAT/.RUN files
Required	Indicates whether theCGI-variable is a mandatory input or not
Type	Type of the CGI-variable, choose from the following options:
Ref Type	A Reference Type SDI is chosen when the Type is chosen to be "Ref Type". The selected "referenceid" is used to determine the list of items displayed in a dropdown list for the CGI variable in the "Report Input Page"
Param From SDC	If the Type is SDC, choose the SDC.
Look up URL	The "lookup" mode provides a text field with the ability to open a LabVantage lookup page and find a value of "string" Data Type.
Param from SQL	This text area allows you to define SQL statement used to populate the dropdown list when the CGI variable type is defined as "SQL DropDown" or "SQL DropDown Combo". Note that the SQL can contain references to previously defined CGI Variables specified as "[paramid]". In the Report input Parameters page the SQL Dropdown/SQL Dropdown Combo list is populated dynamically based on the values specified for the referenced CGI Variables.
Default value	The default value can contain references to other params and specified as "[paramid]". For example default for the CGI Variable "title" can be: "ILP Analysis for [conditionlabel]" where the param "conditionlabel" is defined prior to "title"
Group title	In the "Report Input Page" the list of Input CGI Variables are grouped by this field. All the ones with the same Group title are shown under the same Tab.

Analysis Output Parameters

In this section, define the set of "metrics" that need to be parsed out of the analysis results generated by NWA (specifically the Parameters must match the XML tags in the *.NWG NWA file). For example, "ANCOVA_SLOPE" analysis calculates the following metrics.