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 three Measurement group types:

Group type	Analytics	Plotting	Reporting
Basic group type	No	No	PDF report
Correlation group type	Linear regression for CFU-vs-BactoBox® data set	Growth curve, CFU-vs-BactoBox®	PDF report
Growth curve group type	No	Growth curve, CIZE	PDF report

Both Company name and Author are optional.

Change the group type

You can change a group's type after you create it. There is no need to make a new group.

Open the Group type dropdown in the group's row. Pick the new type. Then press Save.

Change a measurement group's type from the spreadsheet. Open the Group type dropdown, pick the new type, and press Save.

Open measurement group

Click the Open button in the leftmost column. This changes the view to a spreadsheet of all executions in the measurement group.

This looks similar to the Measurements page, 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.

Input columns

When you open a measurement group, the following columns are editable:

Column	Meaning	Typical use
Label	Grouping key for plots and reports.	Species name, bioreactor name, experiment name, etc.
Dilution	Dilution factor used for the sample.	1000 for a 1:1000 dilution.
Sampled at	Timestamp for when the sample was taken.	Bioreactor, shake flask, etc.
HPI	Hours post-inoculation.	Manual time axis input.
calcHPI	Calculated hours post-inoculation.	Auto time axis when HPI is missing. See how calcHPI is calculated.
Notes	Free-text metadata.	Comments, deviations, etc.

How calcHPI is calculated

1. If HPI is available, calcHPI = HPI.

2. If HPI is missing, but Sampled at is available, we calculate calcHPI from the first measurement for the same Label.

3. If both HPI and Sampled at are missing, calcHPI is empty.

Remember to press Save to persist your changes.