Column Chart Series spacing

[alessandroToninelli]

Bug description

I can't reduce the space between the series of this graph. I have already increased the width to 0.9 but there is nothing to do.

Steps to reproduce

  var column = ColumnSeries<ClistatChartFokDataImport, String>(
          width: 1,
          spacing: 0.0,
          dataSource: widget.data.imports,
          isVisibleInLegend: true,
          color: clkColor[import.clk],
          xValueMapper: (datum, index) {
            var xBuffer = StringBuffer();
            if (import.date.year != null) {
              xBuffer.write(import.date.year.toString());
            }
            if (import.date.month != null) {
              var monthString =
                  DateFormat('MMMM').format(DateTime(0, import.date.month!));
              xBuffer.write(" ${monthString}");
            }

            return xBuffer.toString();
          },
          yValueMapper: (datum, index) {
            return import.imp;
          },
          name: import.clk);

Code sample

Code sample

```dart [Add your code here] ```

Screenshots or Video

Screenshots / Video demonstration

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Stack Traces

Stack Traces

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On which target platforms have you observed this bug?

macOS

Flutter Doctor output

Doctor output

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