In the OctoNus Stereo Viewer program you can open any number of data files in the same view. Hereinafter we name these data view items layers.

Adding new data layer to a view

You have three ways to add new data layer to a view:

1. adding not previously opened data from the OSV interface;
2. drag and drop previously opened data from services section to a view;
3. drag and drop files from Windows Explorer directly to a view.

Adding not previously opened data from OSV

To add new data as a layer to the view do next steps:

1. Select the view by mouse:
   
2. press CTRL + SHIFT + 'O' or select 'File > Open to layer' menu item, then find and open new data:
   
3. You'll see new selected data above the old view data:
   

Drag and drop previously opened data

You can also drag previously opened data and drop it to view with already dropped data files to add it as new view layer:

Drag and drop files from Windows Explorer to view

OctoNus Stereo Viewer supports drag and drop operation for files of supported types from Windows Explorer directly to the view as a new layer:

Layers control panel

Layers panel is located at the right program panel in the section 'View control':

• To select layer, click on it in the Layers table.
• To delete layer, press  button.
• To change layers order use and buttons.
• Checkbox 'Act' means 'Active'. Active layers process mouse events, unactive layers don't.
• Check or uncheck 'Vis' checkbox to change layer visibility.
• To change opacity do left mouse double click on layer opacity value. You should see the seekbar . Move the slider on the seekbar by mouse or by keys LEFT ARROW and RIGHT ARROW and press Enter to change opacity.