Relation between sensor resistance and concentration of gas

[xuanduc611]

Do you have resource or reference for the formula which you use in this line?

MySensors/examples/AirQualitySensor/AirQualitySensor.ino

Line 219 in 15351cd

return (pow(10,( ((log(rs_ro_ratio)-pcurve[1])/pcurve[2]) + pcurve[0])));

[mfalkvidd]

I am not familiar with this sensor, but isn't the formula described in the blog post linked in the description section of the sketch?