Constructor
new OverView()
creates a new over view with given settings
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Methods
addNode(groupedNode)
Adds a groupedNode to the canvas, which consists of nodes and edges
that are aggregated in a single node. Edges are not considered when
then node is initially added.
Parameters:
| Name | Type | Description |
|---|---|---|
groupedNode |
The node that is added. Precondition: id, markingColor, nodes and edges must be set. |
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calculateNodePosition(node)
calculates a simple node positions for the sigma nodes
the node is not yet pushed to graph.nodes() or the mapping array
Parameters:
| Name | Type | Description |
|---|---|---|
node |
The node the positioning is set for |
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Returns:
the node with calculated .x and .y
getNodeId(idx)
Returns the node id behind the mapping index
Parameters:
| Name | Type | Description |
|---|---|---|
idx |
the filter index (mapping index) |
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getNodePosition(idx)
Returns the node id behind the mapping index
Parameters:
| Name | Type | Description |
|---|---|---|
idx |
the filter index (mapping index) |
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initHistAttrSwitcher(edge)
inits overview box toggle
enables users to switch between histogram attributes
Parameters:
| Name | Type | Description |
|---|---|---|
edge |
edge used to check available attributes |
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initSigma(container_id, panel_id, use_web_gl)
create new sigma instance
at startup do not show edges do prevent cluttering
Parameters:
| Name | Type | Description |
|---|---|---|
container_id |
id of div where detail graph should be displayed | |
panel_id |
id of the bootstrap panel wrapping the container | |
use_web_gl |
if true, webgl is used for rendering (keep in mind that less functionality is supported) |
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prepareJsonData(key, data)
Extracts relevant data of a json-array with the same attributes in each array-element
Parameters:
| Name | Type | Description |
|---|---|---|
key |
The key of the data, that is extracted (e.g. LONGITUDE, LATITUDE, ...) | |
data |
The input data |
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Returns:
the extracted data
removeNode(idx)
Removes a node from the canvas.
Parameters:
| Name | Type | Description |
|---|---|---|
idx |
the idx of the detailView filter |
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setCameraToCenter()
positions sigma camera to the center of our scale
and removes scaling
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switchFilterIdx(filterIdx, newIdx)
switches the filter idx, that are used to map to the node ids and their positions
Parameters:
| Name | Type | Description |
|---|---|---|
filterIdx |
the old filterIdx | |
newIdx |
the new filterIdx |
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toggleEdgeLabels(flag)
Toggles the edge labels
Parameters:
| Name | Type | Description |
|---|---|---|
flag |
indicates if edge labels shall be drawn. |
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updateEdges(newNode)
Updates and draws edges to the canvas
Parameters:
| Name | Type | Description |
|---|---|---|
newNode |
the node whichs edges are to be drawn. |
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updateNodeEdges(idx, the, the)
Updates the inner edges and nodes of an overview node.
Parameters:
| Name | Type | Description |
|---|---|---|
idx |
the idx of the detailView-filter | |
the |
inner nodes | |
the |
outer nodes |
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