AmCharts hide/ remove categoryField - amcharts

Question

https://snag.gy/9etSHc.jpg ----- this is the image link with what i need to remove.
const chart = this.AmCharts.makeChart( 'chartavaliacao' + id + idf,
{
'type': 'serial',
'theme': 'light',
'rotate': true,
'colors': colorScheme,
'dataProvider': this.dados,
'graphs': this.grafico,
'marginTop': 10,
'marginLeft': 15,
'marginBottom': 0,
'addClassNames': true,
'valueAxes':[{
'unit': '%',
'maximum': 100,
'minimum': 0,
}],
'categoryField': 'categoria', <<<<<<<<<<<<<<<<<< i need to remove this field from my graph
'titles': [
{
'id': 'Title-1',
'size': 15,
'text': this.grouped ? this.titulo : ''
}
],
'listeners': [{
'event': 'drawn',
'method': modifyAxis
}, {
'event': 'clickGraphItem',
'method': redireciona
}]
}, 10);
}
I need to remove from my graph 'categoryField' but if i comment this show UNDEFINED.
I tryed to put false and e got the same result.
someone can help with this question?

Answer 1

Not knowing what your modifyAxis code does, the safest possible way I can think of that will likely not interfere with it is to use a labelFunction that returns an empty string or single space:
AmCharts.makeChart(..., {
// ...
categoryAxis: {
labelFunction: function() {
return " ";
},
// ...
}
// ...
}