Convert STRING to FLOAT through FluentD using csv plugin

[King_D (Dale Pienaar)]

I need help with converting a string field to float either by modifying td-agent.conf file or by scripted field but seem to be failing miserably.

[thomasneirynck]

For the scripted fields, you could do something like?

if (doc['stringnumber'].empty) { 
    return "0" 
} else { 
    return Double.parseDouble(doc['stringnumber'].value); 
}