Number of decimals in sketches

[moskovskiy82]

I don't want the emperature humidity to be as precise as in the sketch which has 2 decimal points.

So for the humidity i rewrote the sketch as such

  float hum_floa = dht.getHumidity();
  float humidity = round (hum_floa); 

It works but the data is still sent as yy.xx
Is there a simple way to make it as yy only?

[sundberg84]

There are probably better ways but:

hum_floa.remove(temp.indexOf('.') + 2)

Dont know the dht lib, maybe you can set some settings there to recieve without decimals.
This will not round but just cut/remove the last digits after "."

[ericvdb]

If you use Set to send your temp/hum you can define how many decimals you want:

MyMessage& set(float value, uint8_t decimals);

For example:

gw.send(msgTemp.set(temperature, 1));

will send you the value with 1 decimal.

Reference: here