Zooming in a Viewer

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It is now possible to magnify part of a graph using the zoom feature. You select part of the graph using the cursors and then select the desired axis for zooming from the context menu, or press one of the defined hotkeys.

Here is a brand new spectrogram graph, with the cursor positions set.

Tutorial zoom 01.png

The hotkey 'V' was pressed to magnify the x axis between the cursors. The marked area is redisplayed in the same graph without having to recalculate the data.

Tutorial zoom 02.png

Once you have zoomed into part of a graph, you can see which part of the whole graph is visible by switching to the 'overview' mode (press the hotkey 'O').

Tutorial zoom 03.png

You can even move the 'view' area around.

Tutorial zoom 04.png

When you switch back to the normal mode (hotkey 'O' again), that part of the graph is now displayed.

Tutorial zoom 05.png

The zoom feature is only available if the 'enable zoom and autoscaling' checkbox in the profile's settings dialog is checked

If you have an older computer, need to make the graph analysis as quick as possible, and do not need the zoom feature, please turn it off. You may see marginal performance increase. If you do this, you can always 'zoom' into an area of a graph by doing another analysis (which is still available via the hotkey A or context menu item Analyse).