I need to create a dynamic dataset where the data will be filled through a query in the database, this data can generate N bars to be plotted so the dataset needs to be created according to the information coming from DB .
The number of bars you create also depends on the query. It will look like this:
Data 1-> barra 1
Data 2 -> barra 2
Data 3 -> barra 3
Data 1(horario diferente, mesmo ID) -> barra 4....
I'm using chartsjs to plot.
Create a vector with the information returned in the database and include the vector in the parameters of the dataset.
var data[];
var valores[];
//data e valores virão do seu banco.
this.barChart = new Chart(this.barCanvas.nativeElement, {
type: 'bar',
data: {
labels: "Nome do gráfico",
datasets: [{
label:data,
data: valores,
backgroundColor: #00000,
borderWidth: 0
}]
}