For example, when specifying a certain number of regions of interest. It is often useful to limit the number of elements that can beĭrawn. Points will be inserted in the ColumnDataSource of the first supplied The declared empty_value when adding a new point. Any additional columns in the data source will be padded with The tool automatically modifies the columns of the data sourceĬorresponding to the x, y, width, and height values of rect ( 'x', 'y', 'width', 'height', source = source2 ) tool = Bo圎ditTool ( renderers = ) rect ( 'x', 'y', 'width', 'height', source = source ) r2 = p. ![]() circle ( 'x', 'y', size = 20, source = source ) show ( p ) Here is a complete example of how to configure and use the hover tool by settingįrom otting import ColumnDataSource, figure, output_file, show output_file ( "toolbar.html" ) source = ColumnDataSource ( data = dict ( x =, y =, desc =, imgs =, fonts = )) TOOLTIPS = """ Location ($x, $y) """ p = figure ( width = 400, height = 400, tooltips = TOOLTIPS, title = "Mouse over the dots" ) p. In this case, use the field to look up the name field on the hovered glyph renderer, and use Name of the column to be specified indirectly. Sometimes, especially with stacked charts, it is desirable to allow the ![]() For example, configuring close} will display values Note that if a column name contains spaces, it must be surrounded byĬurly braces. Is for the 17th glyph instance, then the hover tooltip will display the 17th price value. Values from the "price" column whenever a hover is triggered. For instance, the field name will display $swatchĬolor data from data source displayed as a small color box.įield names that begin with are associated with columns in aĬolumnDataSource. Swatch (color data from data source displayed as a small color box). The available options are: hex (to display the color as a hex value), Y-coordinate under the cursor in screen (canvas) space $colorĬolors from a data source, with the syntax: $color:field_name. X-coordinate under the cursor in screen (canvas) space $sy Y-coordinate under the cursor in data space $sx X-coordinate under the cursor in data space $y Value of the name property of the hovered glyph renderer $x Index of selected point in the data source $name These special fields are listed here: $index To values that are part of the plot, such as the coordinates of the mouse tooltips = :fill_color" ), ( "fill color", "$color:fill_color" ), ( "fill color", "$color:fill_color" ), ( "fill color", "$swatch:fill_color" ), ( "foo", ), ( "bar", ), ]įield names that begin with $ are “special fields”. This chapter contains information about all the individual tools and describes how Since they may respond to several gestures at once, anĮdit tool when activated will potentially deactivate multiple single-gesture tools. These are sophisticated multi-gesture tools that can add, delete, or modify Way, such as the HoverTool or CrosshairTool. These are passive tools that report information or annotate plots in some These are immediate or modal operations that are only activated when theirīutton in the toolbar is pressed, such as the ResetTool. The active tool is highlighted on the toolbar next to the These tools respond to single gestures, such as a pan movement.įor each type of gesture, only one tool can be active at any given time. Information, to change plot parameters such as zoom level or range extents, ![]() ![]() Bokeh comes with a number of interactive tools that you can use to report
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