Sometimes when while moving the cursor over the graph we not see simultaneous values displayed for P1, P2 and Flow. There are specific reasons for this, associated with the way the graphing software manages the large amount of logged data.
If you zoom into the data to show a shorted time range you will see individual logged data points at 15 minute intervals*. However, at longer timeframes it is not possible to show every data point and the graph automatically switches from showing "individual points" to "points of interest". Exactly when it switches between these two modes depends on the width of the graph.
There are two factors that determine the number of individual data points shown on the graph:
- The time range selected
- The portion of the screen available to display the graph
In the examples below, both screenshots show data for the same time range, but the first one has a smaller browser window so the only the "points of interest" are shown for the selected time on the timeline (i.e the peak in flow in this example). The second screenshot shows all 4 logged data points at the selected time because there was more screen width to show the individual 15 minutes readings.
1) Points of interest shown
2) Individual Points shown
- Use a high resolution screen if possible
- To make more screen width available to the graph, hide the tree view on the left by clicking the center of the sliding divider bar.
- Using the mouse to left click on the graph and then drag over the graph to select a smaller time range is the quickest way to zoom into an area of interest.
*Note: The maximum resolution shown on the graph is 15 minutes. If data is logged at a faster rate (e.g. 1 minute), then it is nessessary to use the "Save as CSV" feature with the "Maximum resolution" option selected to see all logged data points. In this case the graph will show data aggregated to 15 minutes.