topic Re: color chart by expression in API in App Development

color chart by expression in API

samratmaskey — Tue, 12 Sep 2017 22:01:59 GMT

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);

});

Re: color chart by expression in API

jonvitale — Tue, 17 Oct 2017 15:41:36 GMT

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?

Re: color chart by expression in API

IVAN-FELIPE — Mon, 11 Dec 2017 10:45:57 GMT

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

Very useful