6.8 Time Series Analyses

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   Table of Contents... 

Background

Some labs capture results over a period of time for tests on the same Sample,  studying and interpreting a sequence of data points recorded or collected at consistent time intervals e.g. ambient lab temperature, weather records, patient health evolution or physical strength tests in engineering

Consider an example where the percentage mass change of 3 similar drying concrete bars are regularly measured, tabled and eventually graphed including of their average

We'll try to turn it out like this in Bika

Using Time Series Analyses...

After it was configured

Setting up a Time Series Analysis Service

For the given example to Analysis Services, and Crete a new one. After completing all its standard attributes, open its Results Options tab

Select Time Series as a result Type

Provide the graph titles

Data Table Definition

 Proceed to lay out the graph by defining its columns and an Index to which the graph will be plotted to - the x-axis, drying cycles in this example

NB  There has to be an Index row, select it on the Column Type lookup

Follow up with the data columns, these are the lines that will be graphed - give each the Data column type, an appropriate title

If the value is a whole number, select Number for the Data Type, Float if it is a rational number that includes a fraction

If it is an Average, select that as Column type - it will be used to differentiate it in colour from the other data lines

Set up the Time Series Importer

Set up a Time Series 'Instrument' that uses the TimeSeries Importer interface. Instrument Configuration