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The Life Data tab is visible when you view a Weibull++ life data folio data sheet for life data analysis.
Calculate estimates the parameters of the chosen distribution, based on the current data set and the specified analysis settings.
Plot creates a new sheet in the folio that provides a choice of applicable plot types. For life data folios, this includes plots such as reliability vs. time, failure rate vs. time, probability plot, etc.
Quick Calculation Pad opens the Weibull++ Quick Calculation Pad, which allows you to calculate results, such as the mean life and the probability of failure, based on the analyzed data sheet.
Distribution Wizard opens the Distribution Wizard, which helps you select the distribution that best fits your data based on the selected parameter estimation method (i.e., RRX, RRY or MLE).
3D Plot creates a 3D plot in the project, allowing you to graph functions with three variables such as the reliability at a given time and stress level. The 3D plot is saved under the Multiplots heading in the current project explorer.
Batch Auto Run opens the Batch Auto Run window, which allows you to easily extract data from an existing data set based on their subset ID.
Specify Points opens the Specify Points window, which allows you to adjust the way that the line is fitted to the points for a rank regression analysis. The ranks will be calculated based on all of the data points but the regression line will be fitted only to the points you have specified.
Alter Parameters provides
two options for manually editing the value of the calculated parameters.
Alter Parameters (w/o Recalculation)
allows you to alter the value of one (or more) parameters, while Alter One Parameter (and Recalculate) allows
you to alter one of the parameter values and have the software estimate
the other parameter values that would result in a good fit for the model.
See also Alter Parameters.
Fill Median Ranks is available only if the data type is free-form. It allows you to experiment with median ranks and see how they affect the solution of the analysis. Enter the time-to-failure values in the "X-Axis value" column, then choose this command. The "Y-Axis value" column will be filled with the corresponding median ranks.
Auto Group Data opens the Auto Group Data window, which allows you to group together identical data points. Grouping data significantly speeds up calculations when you have a very large data set.
Goodness of Fit Results opens the Goodness of Fit Results utility, which uses different tests to determine how well the parameters of the distribution fit the data.
Insert Data Sheet inserts a new blank data sheet into the currently active folio and opens the Weibull++ Folio Data Sheet Setup window, which allows you to select what types of data to include in the new data sheet.
Insert Additional Plot inserts an overlay plot in the currently active folio, allowing you to display results from multiple data sheets within the folio. This provides an easy visual method to compare analyses. For example, you may wish to show the reliability plots of two product designs in the same plot.
Insert General Spreadsheet inserts a new, blank General Spreadsheet into the currently active folio.
Select Sheet allows you to select which sheet in the current folio you want to be active.
Move or Copy Sheet allows you to move or copy any of the sheets within the currently active folio. In the Move/Copy window, select the sheet you wish to move and click (move to end) to move the selected sheet to the end of all the sheets in the folio. Select Create a Copy to create a copy of the selected sheet.
Delete Sheet deletes the current sheet within the folio. There is no undo for delete.
Alter Data Type opens the Weibull++ Folio Data Sheet Setup window, which allows you to change the data entry columns in the current data sheet. Note that when you change the setup, you may lose information already entered in the data sheet. For example, switching the data sheet from one that supports interval data to one that supports only right censored data will remove all the inspection times.
Override Plot Color opens the Override Plot Color window, which allows you to ignore the default colors of the plotted line and points, and apply a color that you specify. This setting is activated in the source data sheet of the plot. This means that when you enable the setting for a particular data sheet, it applies only to the plots that you create for that data sheet and not the plots for all other data sheets that may be within the same folio. Note that only the colors of the lines and points are affected. Other settings such as the line style and thickness, or the point size and shape are based on the settings that you have specified in the Plot Items page of the Plot Setup window.
Set Headers as Default saves the current column headings as the defaults for new data sheets of the same type. To reset the default headings, click Reset Application Settings in the Application Setup.
Apply Default Headers applies the currently saved defaults to the column headings of the active data sheet.
Add/Remove Columns allows you to add or remove subset ID columns in the currently active data sheet.
Color Data Values allows you to apply different font colors to the entries in the data sheet for easy visualization. Note that whenever you edit or add new data to the data sheet, you must choose one of the Color Data Values commands again in order to apply the font colors.
Default Color applies a black font color to all the entries in the data sheet
Based on Data Type applies different font colors based on the type of censoring. The colors are: red for failure data (no censoring), green for suspension data, magenta for left-censored data and blue for interval data.
Based on Subset ID 1 applies different font colors based on unique subset IDs in the Subset ID 1 column. If a data point has no entry in the Subset ID 1 column, then the font color is black.
Based on Subset ID 2 applies different font colors based on unique subset IDs in the Subset ID 2 column. If a data point has no entry in the Subset ID 2 column, then the font color is black.
Based on Subset ID Combination applies font colors based on unique combinations of subset IDs in the Subset ID 1 and Subset ID 2 columns. If a data point has no subset IDs, the font color is black, but if a data point has at least one subset ID, then it is treated as having a unique combination of subset IDs.
Publish Model publishes the chosen life distribution as a model for use throughout the project, in any Synthesis application where models are used. See Publishing Models.
Publish SEP Summary publishes a summary of the current analysis to the Synthesis Enterprise portal website. This is visible only if the enterprise database is configured for SEP and you have the “Publish to Synthesis Enterprise Portal” permission (see Publishing to SEP).
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