Measurement group

Group measurements together for analytics, plotting, and reporting.

When we group measurements together, we reveal trends in the data. If a single measurement is like a still frame, a group of measurements is the complete film.

Just like the Measurements page, we present measurement groups as a spreadsheet.

Navigate to the Measurement group page. Open individual measurement groups for analytics, plotting, and reporting.

Create measurement group

Press the Create measurement group... button to open the dialog (see image below). Fill in the fields and press the Create button.

The dialog used to create a new measurement group.

The Measurement group name can be anything. E.g., the name of your experiment or the name of your current batch.

There are two Measurement group types:

Group type	Analytics	Plotting	Reporting
basic	No	No	PDF report
correlation	Linear regression for CFU-vs-BactoBox® data set	Growth curve, CFU-vs-BactoBox®.	PDF report

Both Company name and Author are optional.

Open measurement group

Click the Open button in the left-most column. This changes the view to a spreadsheet of all the executions in the opened measurement group. This looks very similar to the Measurements but with columns specific to the group type.

When a group is open, the Measure button opens with the group already selected. This makes it easy to start the Measure program and add it to the group as a single action. See the quick clip below for an example.

Create a measurement group, open it, and press Measure to start the Measure program. Since the measurement group is open, the newly-started measurement becomes part of the measurement group.

Basic group type

Merely groups the measurements together. Doesn't offer additional analytics or plotting.

Correlation group type

Use this group type to:

• Create a growth curve

• Create a CFU-vs-BactoBox® plot

For the growth curve, we show up two three individual curves: Cells/mL, CFU/mL, and OD.

For the CFU-vs-BactoBox® plot, we use a log-log scale and add a trend line with an R² value.

A correlation-type measurement group with 31 measurements. The view splits in the middle. There is a list of executions (left), a growth curve (top right), and a correlation plot vs CFU (bottom right).

Columns

The correlation group type generates two plots based on the following columns:

Plot	Column on x-axis	Column(s) on y-axis
Growth curve	Sampled at	Cells/mL × Dil. CFU/mL × Dil. OD × Dil. × OD to cells factor
CFU-vs-BactoBox®	CFU/mL × Dil. log10	Cells/mL log10

Initially, the plots are empty (no data points). The plots update live, as you start measurements and fill out the columns.

Naturally, the data points only appear in the plot if the corresponding columns have data.

The plot updates live as you fill out the corresponding column. Note how even unsaved (pending) changes still affect the plot.

The trend line appears once you fill out the corresponding columns for all measurements in the group.

Tab per label

We use the Label column to group the measurements even further. For each label, we show a tab that contains the corresponding plots.

All measurements with an empty Label column goes into the Unlabelled tab.