Need to store TinyGPSPlus location values in a variable

[greenefam5]

Hi, all. I am working with the TinyGPSPlus library, I am trying to save the location dd.mm values into a variable, but I'm trying to get a decimal value greater than two decimal places. I am following the same scheme as Serial.print():

Serial.print(gps.location.lat(), 6);
which produces the latitude to the 6th place beyond the decimal

Without the ", 6" I only receive the latitude to the second place beyond the variable.

However when I try this:

float gpslatWhole=(gps.location.lat(), 6);
Serial.println(gpslatWhole);

the output is:

6.00
6.00
6.00
6.00 ...

I've also tried this without the "float" and I get the same results.

How can I store the gps.location.lat() to a decimal value beyond the second into a variable?

Thank you,
Wayne

[rsmls]

@greenefam5

How can I store the gps.location.lat() to a decimal value beyond the second into a variable?

It's probably stored the way you want it, but if you Serial.print a float number, by default it will truncate to two decimals only. Try

Serial.println(gpslatWhole, 6);

[jremington]

@greenefam5

float gpslatWhole=(gps.location.lat(), 6);

Look up the C/C++ comma operator. "gpslatWhole" is set by the above line to 6.

The "6" in Serial.print() and related statements is a function argument to set the number of fractional digits to display.

In this line, gpslatWhole is set to the full precision of a float value returned by the function, which is 6-7 decimal digits, total.

float gpslatWhole = gps.location.lat();

[greenefam5]

Ahh! That makes sense, and it makes my project so much easier to accomplish. Thank you so much!!

Wayne