Graph

Sqliteviz allows building a graph. To build a graph, run a query to get data. Then open the visualisation panel by clicking in any of the two side toolbars and choose a graph mode by clicking .

Requirements for result set

To build a graph, a result set must follow the following requirements:

the first column must contain JSONs (the rest columns in the result set will be ignored)
each JSON has a common key indicating if the record represents a node (value 0) or an edge (value 1)
each JSON representing a node has a common key with a node id
each JSON representing an edge has a common key with the edge source and a common key with the edge target

Each JSON can have more fields used for graph styling (read more in Graph styling).

Graph structure

Start building a graph by setting a mapping from your records to nodes and edge properties. Go to Structure > Graph and set the following fields:

Object type – a field containing 0 for node records and 1 for edge records.
Node Id – a field containing the node identifier
Edge source - a field keeping a node identifier where the edge starts.
Edge target - a field keeping a node identifier where the edge ends.

This is already enough to build a graph with default styling and circular layout.

Graph styling

General

Set a background color of the graph in Style > General panel.

Nodes

There are the following settings in Style > Nodes panel:

Label - a field containing a node label. Note that if the graph has too many nodes, some labels can be visible only at a certain zoom level.
Label Color - a color of node labels
Size - set a node size. There are 3 modes of node sizing: constant, variable and calculated.

Constant means that all nodes have the same size.

Variable allows you to choose a field where the node size will be taken.

Calculated allows to choose a method that will be used to calculate the node size. Currently, 3 methods are available: total node degree, degree by in-edges and degree by out-edges.

For variable and calculated sizing it's also possible to set scale, the minimum size and the sizing mode - area or diameter. In the diameter mode the difference between node sizes will be more noticeable.
Color - set a node color. There are 3 modes of node color: constant, variable and calculated.

Constant means that all nodes have the same color.

Variable allows you to choose a field by which the color will be determined. With this option you can also choose if the color value should be taken directly or mapped to a color palette. Direct mode means that in JSON representing a node, the value available by the selected field will be used as a color. The color value can be set in different ways:

As Hex, 8-digit (RGBA) Hex
```
"#000"
"000"
"#369C"
"369C"
"#f0f0f6"
"f0f0f6"
"#f0f0f688"
"f0f0f688"
```
RGB, RGBA
```
"rgb (255, 0, 0)"
"rgb 255 0 0"
"rgba (255, 0, 0, .5)"
{ "r": 255, "g": 0, "b": 0 }
```
HSL, HSLA
```
"hsl(0, 100%, 50%)"
"hsla(0, 100%, 50%, .5)"
"hsl(0, 100%, 50%)"
"hsl 0 1.0 0.5"
{ "h": 0, "s": 1, "l": .5 }
```
HSV, HSVA
```
"hsv(0, 100%, 100%)"
"hsva(0, 100%, 100%, .5)"
"hsv (0 100% 100%)"
"hsv 0 1 1"
{ "h": 0, "s": 100, "v": 100 }
```
Named colors Case insenstive names are accepted, using the list of colors in the CSS spec.
```
"RED"
"blanchedalmond"
"darkblue"
```
When Map to option is selected, the value by the selected field can be anything because it won't be used directly as a color. In this case each distinct value instead will be mapped to a certain color, so nodes with the same value will have the same color. You can choose a palette used in color mapping.

Calculated color mode allows to choose a method that will be used to determine a color. Currently, 3 methods are available: total node degree, degree by in-edges and degree by out-edges.

How to build a pivot table in SQL(ite) explores two options with static (or beforehand-known) and dynamic columns.

4.4 KiB Raw Blame History Unescape Escape