setColumnProperties Syntax?

[Ken Burkhalter]

In order to use the 'certainty' feature of line chart plotting I was starting to use the following approach to set the chart DataTable properties after the input data array was converted to a data table.

   data.setColumnProperty(2, 'role', 'certainty');

   data.setColumnProperty(2, 'type', 'boolean');

   data.setColumnProperty(4, 'role', 'certainty');

   data.setColumnProperty(4, 'type', 'boolean')

   .......

Since there are a number of such columns to set, I discovered and would think that the "setColumnProperties" method would be more compact, however, despite hours of searching for documentation or examples of that approach I have been able to find virtually nothing.

Can someone provide a syntax example of how the above multiple individual column properties can be combined using the setColumnProperties approach?

Thanks.  :-)

[Sergey Grabkovsky]

Hi Ken,

setColumnProperties should be used to set multiple properties of a single column, and as such will not work for your case, since 'type' is not a property. You may find the documentation for setColumnProperties here: https://developers.google.com/chart/interactive/docs/reference#DataTable_setColumnProperties

An example might be:

data.setColumnProperties(3, {role: 'tooltip', html: true});

Keep in mind that this method overrides all the properties that you have set previously.

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