Visualization class

The Visualization class is used to initialize any fusion-tools instance. This class is where you can add locally stored data to your visualization session as well as any cloud data by specifying different types of TileServer*s. For local slides, you have to pre-specify either the loaded annotations (preferrably GeoJSON format) or the path to the annotation file that can be read in *fusion-tools.

You can also specify the layout and combinations of components to use in your dashboard at this point using the following hierarchy: Rows–>Columns–>Tabs

# This layout consists of one row of one component:
example_row_layout = [
    SlideMap()
]

# This layout consists of one row with two columns:
example_col_layout = [
    [
        SlideMap(),
        OverlayOptions()
    ]
]

# This layout consists of one row and two columns where the second column
# contains two tabs:
example_layout = [
    [
        SlideMap(),
        [
            OverlayOptions(),
            PropertyViewer()
        ]
    ]
]

# This layout consists of two rows with the same components but inverted in order
example_layout = [
    [
        SlideMap(),
        [
            OverlayOptions(),
            PropertyViewer()
        ]
    ],
    [
        [
            OverlayOptions(),
            PropertyViewer()
        ],
        SlideMap()
    ]
]

# And so on.......

Alternatively, you can also define multiple pages with content by specifying a dictionary of page names with different page layouts.

example_page_layout = {
    "page 1": [
        SlideMap()
    ],
    "page 2": [
        [
            SlideMap(),
            [
                OverlayOptions(),
                PropertyViewer()
            ]
        ]
    ]
}

By default this will create a page selector in the Navbar at the top of the application, or you can change the url to access different pages. (e.g.: access “page 1” by going to “{host}:{port}/app/page-1” and “page 2” by going to “{host}:{port}/app/page-2”)

• fusion_tools.visualization package
  • fusion_tools.visualization.components module
  • fusion_tools.visualization.vis_utils module

The Visualization Session

The “Visualization Session” refers to all of the information that is currently used by interactive components. This includes:

1. Current user details (if any DSA components or TileServers are in use)

2. Local slides (if any LocalTileServers are in use)

3. Current slides (combination of local slides + cloud slides selected from DatasetBuilder)

By default, objects that inherit from the Tool class do not need to update when the session data is updated. However, DSATool sub-classes do need to update due to changing “current_user” information affecting accessibility of certain collections/user folders.

In custom components, you can change this property by setting “session_update” to either True or False.

fusion_tools.visualization module