lc_colourSlider: Add a colour slider
In rlc: Create Interactive Linked Charts with Minimal Code

Description Usage Arguments Available properties Examples

Colour slider provides an easy way to change any continuous colour scale interactively. If your chart uses a continuous colour scale, you can just link a colour slider and it will be automatically synchronized with your chart's colour scale.

1	lc_colourSlider(data = list(), place = NULL, ..., chartId = NULL, with = NULL)

`data`	Name-value pairs of properties passed through the `dat` function. These properties will be re-evaluated on each `updateCharts` call.
`place`	An ID of the container, where to place new chart. It will be ignored if the chart already exists. If not defined, the chart will be appended to the web page's body.
`...`	Name-value pairs of properties that will be evaluated only once and then will remain constant. These properties can still be changed later using the `setProperties` function.
`chartId`	An ID for the chart. All charts must have unique IDs. If a chart with the same ID already exists, it will be replaced. If ID is not defined, it will be the same as the value of the `place` argument. And if both are not defined, the ID will be set to `ChartN`, where `N - 1` is the number of existing charts.
`with`	A dataset or a list from which other properties should be taken. If the dataset doesn't have a column with the requested name, the variable will be searched for outside of the dataset. Must be a `data.frame` or a `list`.

You can read more about different properties here.

chart - ID of the chart to which the colour slider should be linked.
layer - id of the layer to which the colour slider should be linked. If the chart has only one layer, this property is optional.

Global chart settings

width - width of the chart in pixels.
heigth - height of the chart in pixels.
paddings - padding sizes in pixels. Must be a list with all the following fields: "top", "bottom", "left", "right".
title - a title of the chart.
titleX, titleY - coordinates of the chart title.
titleSize - font-size of the chart title.

data("iris")
lc_scatter(dat(x = Sepal.Length, 
               y = Petal.Length,
               colourValue = Petal.Width,
               symbolValue = Species),
           with = iris,
           title = "Iris dataset",
           axisTitleY = "Petal Length",
           axisTitleX = "Sepal Length",
           colourLegendTitle = "Petal Width",
           symbolLegendTitle = "Species",
           showLegend = FALSE,
           chartId = "scatter")

lc_colourSlider(chart = "scatter")