Only display chartModel X-values, without computing intermediate values

[Tboy70]

Hi,

I would like to know if it's possible to display only the values of x-axis and not display the intermediate ones.

For example , I have this :

val chartEntryModel = entryModelOf(  
    mutableListOf<FloatEntry>().apply {  
	    add(FloatEntry(20f, 1f))  
	    add(FloatEntry(21f, 3f))  
	    add(FloatEntry(40f, 5f))  
	    }  
	)

On my chart, on my X-axis, I would like to have only 20, 21 and 40, and not display 22..39 (cause there is no time relation between x-axis values).

Thank you

[patrickmichalik]

Hello! As such, Vico’s charts are based on a standard Cartesian coordinate plane. However, you can normalize the x values and use AxisValueFormatter to format the labels displayed along your HorizontalAxis instance (or instances). An example can be found here. In your case, a slightly more concise solution can be used:

val xValues = listOf(20f, 21f, 40f)
val yValues = listOf(1f, 3f, 5f)
val chartEntryModel = entryModelOf(yValues.mapIndexed { index, yValue -> entryOf(index, yValue) })
val horizontalAxisValueFormatter = AxisValueFormatter<AxisPosition.Horizontal> { value, _ ->
    String.format("%.0f", xValues[value.toInt()])
}