[Bug] Colors for series in the legend do not match the colors set about go-echarts HOT 5 CLOSED

Hi @dpajkovic , the legend and the data is not in the same system, there is no corresponding legend for each data.
It needs set it individual and bind to the series via name.
Base on the code you provide:

	legends := []map[string]interface{}{
		{
			"name": "Number of production Events",
			"itemStyle": map[string]string{
				"color": "#516a91",
			},
		},
		{
			"name": "Number of pre-production Events",
			"itemStyle": map[string]string{
				"color": "#93b7e3",
			},
		},
		{
			"name": "Linear regression of production Events",
			"itemStyle": map[string]string{
				"color": "#516a91",
			},
		},
		{
			"name":"Linear regression of pre-production Events",
			"itemStyle": map[string]string{
				"color": "#93b7e3",
			},
		}

		charts.WithLegendOpts(
			opts.Legend{
				...
				Data:   legends,
			},
		),

from go-echarts.

Interesting. And a nice workaround. But I would argue that it stands to reason the line color should be picked up by the legend from the series setting the same way the type of the line is picked up. Thanks!

from go-echarts.

Interesting. And a nice workaround. But I would argue that it stands to reason the line color should be picked up by the legend from the series setting the same way the type of the line is picked up. Thanks!

FYI.
It is not a workaround, it is literally how it works in echarts.
By default, the line and the legend both pick the Color from the global Colors.
When you custom the line's color individually, it does not impact the global Colors which used by legend.
You can config the global colors via Colors, but it doesn't means there has a steady corresponding legend color to the lines custom color, although you could set it as the same.

line.Colors = []string{"#ae1029","#0065c2","#26c238", "#9876aa", "#fb8649",
		"#57904b","#d35b5c"}.

// line.Colors = []string{"#516a91","#0065c2","#93b7e3"},

from go-echarts.

My argument is that legend picks up the line type (solid/dashed/dotted...), which I declare in LineStyle same as I do the color, and intuitively it should pick up the color as well. Is there a way to change the line type in legend Data?

Anyway, since it's the same in echarts, I can see this being an enhancement and not a bug.

from go-echarts.

My argument is that legend picks up the line type (solid/dashed/dotted...), which I declare in LineStyle same as I do the color, and intuitively it should pick up the color as well. Is there a way to change the line type in legend Data?

The line style of echarts is another topic and its default behavior refer to its doc:

Legend line style. If its children have values as 'inherit', the values are inherited from corresponding series options.

I see the behavior between the legend and the series seems odd with some inherit and something not.
But it is what it is...

Is there a way to change the line type in legend Data?

{
			"name": "Number of production Events",
			"itemStyle": map[string]string{
				"color": "#516a91",
			},
                        // add the lineStyle
                        lineStyle: {
                              type: "dashed"
                         }
}

from go-echarts.