Chartjs-Chart.js Start Y-Axis at a defined value

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In your options, use this:

 scaleBeginAtZero : false,
 scaleOverride: true,
 scaleStartValue: 1,

Try this for your php code:

private function _create_uncontinuousline_chart( $data, $opt ){ 
    if ( empty( $data ) ){ 
        return '';
    } 
    $id = self::_get_canvas_id( $this->count );
    $sets = self::_parse_data( $data, 3 );
    $cd = self::_resort_sets( $sets, true );
    $this->js[] = 'new Chart(' . "jQuery('#$id').get(0).getContext('2d')" . ')
                    .UncontinuousLine(' . AimyChartsContentPluginHelper::phpva_json_encode( $cd ) . ',' 
                    . '{' . 'animation: ' . ( $opt[ 'animate' ] ? 'true' : 'false' )  
                    . ',multiTooltipTemplate: ' . '"<%= value %> (<%= datasetLabel %>)"' 
                    . ',responsive: ' . ( $opt[ 'responsive' ] ? 'true' : 'false' ) 
                    . ',datasetStrokeWidth:0.01' 
                    . ',scaleBeginAtZero : false'
                    . ',scaleOverride: true'
                    . ',scaleStartValue: 1'
                    . '}' . ');';
    return self::_get_canvas( 'UncontinuousLine', $this->count, $opt );

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