Using the Zoom Presets

The 'Zoom Presets' are a powerful tool for aligning and comparing your Temprecord data. It provides a means of setting the horizontal (time and date) and vertical (temperature) axes of the displayed or printed graph to match the axes in another window, or to set the axes to arbitrary values.

Assume you have data loaded from several loggers displayed in several Temprecord data windows. The loggers all have data that covers the time and temperature range you are interested in, but the loggers have differing sample periods and start times, and the temperature range recorded by each is different. By default, when a logger's data is read, Temprecord will scale the graph of data from each logger to fully occupy the window, so the scaling of the graph view will depend on the temperature range of the data and the number of samples taken. The following procedure will align any or all displayed windows to a set temperature and time range:

•Select one of the Temprecord data windows and determine from the graph which date and time and temperature range you wish to display.

•Enter the date and time you wish to appear at the left-hand side of the graph into the Preset Zoom Axis 'From' date and time fields.

•Enter the date and time you wish to appear at the right-hand side of the graph into the Preset Zoom Axis 'Until' date and time fields.

•Enter the temperature you wish to appear at the top of the graph into the Preset Zoom Axis 'Upper Temperature' field.

•Enter the temperature you wish to appear at the bottom of the graph into the Preset Zoom Axis 'Lower Temperature' field.

The graph displayed in the window will be scaled to the values you entered into the graph view options Preset Zoom fields. You can the last step for each remaining window, or you can force all windows to be scaled to these preset settings at once by using the View/Zoom/Zoom all Windows to Presets function.

The situation frequently arises where you have data from two or more loggers displayed and you wish to compare them - either on-screen or as printed graphs. The following procedure will align two or more displayed graphs to another displayed graph.

•Get the graph displaying the region you wish to compare. You can do this by using the normal zoom functions, or by zooming with the mouse.

•Click on View/Zoom/Assign Presets from Window. This function assigns the presets in the graph view options page from the axes settings for the current Temprecord data window. Once assigned, these presets are remembered until the assign function is used again.

The graph displayed in the window will be scaled to the values you entered into the graph view options Preset Zoom fields. You can force all windows to be scaled to these preset settings at once by using the View/Zoom/Zoom all Windows to Presets function.

The zoom presets are also applied to the printed graph, but only if the 'Print Visible Window' printing option is selected.

The preset zoom function will not work unless the corresponding enables are checked in the Graph View Options page. There are two enables, one for each of the X (time) and Y (temperature) axes. If only the X zoom preset is enabled, using the zoom to presets function causes the X axis span to be reset, but not the Y axis. If only the Y zoom preset is enabled, using the zoom to presets function causes the Y axis span to be reset, but not the X axis.

To quickly zoom all windows to match one particular window, you can use the Zoom all Windows to This One function.