color chart by expression in API

[samratmaskey]

I was trying to color the chart by expression through API. below is the code, i kept missing "id":"colorByExpression", and lost some time while creating it. hope it would be helpful to someone.

app.visualization.create( 'barchart',

      [ "Dimension",

        { "qDef": { "qDef": "Measure"}, "qAttributeExpressions": [{ "id":"colorByExpression", "qExpression": "=If(Dimension='D1', RGB(255,0,0), If(Dimension='D2', RGB(0,255,0)))" }] }

    ],

      {

          "color": { "auto": false, "mode": "byExpression" }

      }

    ).then(function (chart) {

            chart.show(chartid);

            deferred.resolve(chart);

        });

[jonvitale]

Samrat,

Can you explain what this is doing a bit? For example, what is setting qDef to Measure doing? What's the measure?

Also (a shot in the dark here), have you developed an extensions where you do something similar - i.e., setting color by dimension expression?

[IVAN-FELIPE]

Thanks for sharing Samrat, I've been looking for the solution for hours without success!

Very useful