Google Charts - Material Bar Chart, Convert Options

Question

I am trying to use Material Bar Chart, because i want to change K format for thousands at the Vaxis data. I want to show as 1000 not like 1k. When I use the following code for the chart, it seems okey, but i cannot customize Vaxis;

    <script>
Array.prototype.insert = function ( index, item ) {
    this.splice( index, 0, item );
};
function all(arr2,test){
    google.charts.load('current', {'packages':['bar']});
    google.charts.setOnLoadCallback(drawChart);

    function drawChart() {
        if(arrGrp[0].length == 2)
        {
            arr2.push([' ', null]);
        }
        var data = google.visualization.arrayToDataTable(arr2);
        console.log("ARR: " + arr2);

        var options = {
            title: 'Min: ' + min +' Max: ' + max ,
            bars:'vertical',
            bar: {groupWidth: "25%"},
            height: 400,
            vAxis: {
                format: 'decimal',
                minValue: min,
                maxValue: max,
                viewWindowMode : 'explicit',
                viewWindow: {
                    max:max,
                    min:min
                },}};

        var chart = new google.charts.Bar(document.getElementById('chart_div'));
        chart.draw(data, options);
    }
}
var arrGrp=[];
</script>

And I populate my data as follows;

@{
var grpHeader2 = Model.GroupBy(r => new { r.GradeId, r.Grade }).ToList();
<script>
    var arr = [];
    var rowIndex=0;
    arr.insert(rowIndex,'Date');
    rowIndex++;
    @foreach (var grpHeaderItem in grpHeader2)
    {
    <text>
    arr.insert(rowIndex,'@(Html.Raw(grpHeaderItem.Key.Grade))');
    rowIndex++;
    </text>
    }
    arrGrp.push(arr);
    max='@(Model.Max(r=>r.MaxScore).HasValue ? Model.Max(r => r.MaxScore) : -1 )';
    min='@(Model.Min(r=>r.MinScore).HasValue ? Model.Min(r => r.MinScore) : -1 )';
</script>

}
@foreach (var item in Model.GroupBy(r => new { r.PlannedDate }))
{
<script>
    var arr = [];
    var rowIndex=0;
    @*arr.insert(rowIndex,new Date(@item.Key.PlannedDate.Year,@item.Key.PlannedDate.Month,@item.Key.PlannedDate.Day));*@
    arr.insert(rowIndex,'@item.Key.PlannedDate.ToString("dd.MM.yyyy")');
    rowIndex++;
    @foreach (var grpHeaderItem in grpHeader2)
    {
        <text>
    arr.insert(rowIndex,@(Model.Where(r=>r.PlannedDate == item.Key.PlannedDate && grpHeaderItem.Key.GradeId == r.GradeId).Select(r=>r.GradeMin).FirstOrDefault()));
    rowIndex++;
    </text>
    }
    arrGrp.push(arr);

</script>
}

@{
<script>

    all(arrGrp,'@(Html.Raw(ViewBag.Exam))');
</script>

Screen shot is [1]: https://imgyukle.com/i/1.xElyj "before - working but no customization" But when change code

chart.draw(data, options);

to

chart.draw(data, google.charts.Bar.convertOptions(options));

It looks like; [2]: https://imgyukle.com/i/2.xE348 "nothing working"

Can someone please help me what is wrong with that?

Answer 1

when you draw the chart without --> google.charts.Bar.convertOptions ,
the chart ignores the options for --> vAxis.viewWindow.min & max ,
so the chart draws fine...

 google.charts.load('current', { packages:['bar'] }).then(function () { var data = google.visualization.arrayToDataTable([ ['Date', 'Reading', 'Writing', 'Reading & Writing', 'Math', 'Total'], ['07.08.2018', 220, 230, 450, 610, 1060] ]); var min = -1; var max = -1; var options = { title: 'Min: ' + min +' Max: ' + max , bars:'vertical', bar: {groupWidth: "25%"}, height: 400, vAxis: { format: 'decimal', minValue: min, maxValue: max, viewWindowMode : 'explicit', viewWindow: { max:max, min:min } } }; var chart = new google.charts.Bar(document.getElementById('chart_div')); chart.draw(data, (options)); }); 

 <script src="https://www.gstatic.com/charts/loader.js"></script> <div id="chart_div"></div> 

when you draw the chart with --> google.charts.Bar.convertOptions ,
it uses the min & max options, but according to the picture,
min & max are both set to --> -1 ,
there are no rows that meet this criteria,
so the chart is blank...

 google.charts.load('current', { packages:['bar'] }).then(function () { var data = google.visualization.arrayToDataTable([ ['Date', 'Reading', 'Writing', 'Reading & Writing', 'Math', 'Total'], ['07.08.2018', 220, 230, 450, 610, 1060] ]); var min = -1; var max = -1; var options = { title: 'Min: ' + min +' Max: ' + max , bars:'vertical', bar: {groupWidth: "25%"}, height: 400, vAxis: { format: 'decimal', minValue: min, maxValue: max, viewWindowMode : 'explicit', viewWindow: { max:max, min:min } } }; var chart = new google.charts.Bar(document.getElementById('chart_div')); chart.draw(data, google.charts.Bar.convertOptions(options)); }); 

 <script src="https://www.gstatic.com/charts/loader.js"></script> <div id="chart_div"></div> 

note: there are several options that are not supported by Material charts.
see --> Tracking Issue for Material Chart Feature Parity

this includes --> vAxis.minValue , vAxis.maxValue , & vAxis.format

but vAxis.viewWindow.min & max work, and is the same as vAxis.minValue & vAxis.maxValue

to format the y-axis, use --> vAxes (with an e ) -- format each axis separately, here you only have one

vAxes: {
  0: {
    format: 'decimal'
  }
}

see following working snippet...

 google.charts.load('current', { packages:['bar'] }).then(function () { var data = google.visualization.arrayToDataTable([ ['Date', 'Reading', 'Writing', 'Reading & Writing', 'Math', 'Total'], ['07.08.2018', 220, 230, 450, 610, 1060] ]); var min = 0; var max = 1200; var options = { title: 'Min: ' + min +' Max: ' + max , bars:'vertical', bar: {groupWidth: "25%"}, height: 400, vAxis: { viewWindow: { max:max, min:min } }, vAxes: { 0: { format: 'decimal' } } }; var chart = new google.charts.Bar(document.getElementById('chart_div')); chart.draw(data, google.charts.Bar.convertOptions(options)); }); 

 <script src="https://www.gstatic.com/charts/loader.js"></script> <div id="chart_div"></div>