Dynamic coloring of bars, pies, slices, etc ..

[riclo]

What is the best way to give bars, pie's, slices color, during the creation of the data?
I want to do this in a microflow

I can see the conversion of the data in CreateLiteralInitializer, but what about the 'Options' part, where you can pass colors ?

var options = {
width: 400,
height: 240,
title: 'Toppings I Like On My Pizza',
colors: ['#e0440e', '#e6693e', '#ec8f6e', '#f3b49f', '#f6c7b6']
};

[riclo]

i just made an entry to pass a colorstring

[madnessxd]

The way I add the colors is by adding them to the widget settings:

You are bound to the colors that are set in the widget though. You can't change the color variably based on microflow variables if that was your intention.

[riclo]

I know for sure this can be neater, but what i did was :

in the microflow i created a colorstring for instance ["red", "blue", "green"].
In the CreateLiteralInitializer (which came along) I added a colorstring as a second parameter:
like :
public CreateLiteralInitializer(IContext context, IMendixObject ParameterParameter1, java.lang.String parmColorString)
{
super(context);
this.__ParameterParameter1 = ParameterParameter1;
this.parmColorString = parmColorString;
}

at the end of the function where the literal is created, i added:
literalOutput.append("chartcolor" + this.parmColorString);

Extracted the GoogleCharts.mpk.
Then I changed the base.js, where the data is being created.
Where I lookup this 'chartcolorString' and cut off that piece of string, so getting back the original string. This is the data piece. The rest of it is the colorstring.

           **var jsonString = this._contextObj ? this._contextObj.get(this.jsonDataSource) : "";
			// find colorstring
			var n = jsonString.indexOf("chartcolor");
			if( n > -1 )
			{
				// get colorstring
				var colorstring = jsonString.substr(n+10);	
				// get reduced jsonstring
				jsonString = jsonString.slice(0,n);
				this.colors = colorstring; 
			}**

and compress it back to a new GoogleCharts.mpk.

so now the chart is displayed in the colors the user wanted to.
in the properties 'colors' stays empty




@ @

[IncentroDennis]

That looks like a great solution. It might be a good addition to the java class and we could also maybe add similar parameters. It's easier to have everything in one flow at one place.

There are a lot of options in the parameters though, so I will look into what things we could add to the next version and what parameters are less used or too specific to certain graphs.
I personally do think that color is one of the most used variables. Maybe a general section will do for the other parameters.

[mrgroen]

Would it be nice to make the whole options part dynamic?