More precision with QGeocoordinate

Stefanoxjx

Hello, I'm seeing the class QGeoCoordinate.
To test it I wrote a very simple code

#include <QCoreApplication>
#include <QDebug>
#include <QGeoCoordinate>

int main (int argc, char * argv [])
{
QCoreApplication a (argc, argv);
QGeoCoordinate g;

g.setLatitude (45.7293679);
g.setLongitude (11.9152492);
g.setAltitude (88.10);

qDebug () << g.toString (QGeoCoordinate :: degrees);
qDebug () << g.toString (QGeoCoordinate :: DegreesMinutesSecondsWithHemisphere);
qDebug () << g.toString (QGeoCoordinate :: DegreesMinutesWithHemisphere);

return a.exec ();
}

the result is:

"45.72937°, 11.91525°, 88.1m"
"45° 43' 45.7\" N, 11° 54' 54.9\" E, 88.1m"
"45° 43.762' N, 11° 54.915' E, 88.1m"

I ask me if is possibile to have more precision.
For example, I've specified coordinates with 7 decimals, but

qDebug () << g.toString (QGeoCoordinate :: degrees);

returns coordinates with 5 decimals.

Many thanks for your answer.

Stefano

raven-worx

@Stefanoxjx
this is just the default string formatting of this class.
You can easily format it to your needs for degrees.

const int precision = 7;
qDebug() << QString("%1°, %2°, %3m").arg( g.latitude(), 0, 'f', precision ).arg( g.longitude(), 0, 'f', precision ).arg( g.altitude(), 0, 'f', 2);

Stefanoxjx

Hi raven-worx and thanks for your reply.
You've formatted output of QString, but if I would like to have more precision in coordinates conversion?
For example, the output of this line:

qDebug() << g.toString(QGeoCoordinate::DegreesMinutesWithHemisphere);

is:

"45° 43.762' N, 11° 54.915' E, 88.1m"

but if I wanted to have:

"45° 43.762123' N, 11° 54.915123' E, 88.11m"

is possible?
Thansk.

Stefano

raven-worx

@Stefanoxjx
same procedure, just some calculations needed.
I leave it up to you to check the calculations necessary in the source code.

Stefanoxjx

Many thanks for your help.

Stefano