Decimal Degree coordinates in Double format

ChrisPalmer2 — Tue, 29 Oct 2019 06:31:14 GMT

Hello!

This question is about the SDK for Qt using C++

In my prototype application (c++), I instantiate a map with:

m_map = new Map(BasemapType::ImageryWithLabels, [SOME_DOUBLE], [SOME_NEGATIVE_DOUBLE], 18, this);

and everything looks great. When I later do a conversion from screen coordinate (via mouse click) to real-world coordinate using something like this (where 'event' is a QMouseEvent):

Esri::ArcGISRuntime::Point point = m_mapView->screenToLocation(event.x(), event.y());

auto latLong = Esri::ArcGISRuntime::CoordinateFormatter::toLatitudeLongitude(
point,
Esri::ArcGISRuntime::LatitudeLongitudeFormat::DecimalDegrees,
4);

I end up with some wild numbers. in the latLong.x and latLong.y values.

If I then use:

CoordinateFormatter::toLatitudeLongitude(point, LatitudeLongitudeFormat::DecimalDegrees, 4)

to convert it to text, I end up with N,S,E,W notations on the end. Is there a way that I can simply get the coordinates in decimal degrees as doubles?

Re: Decimal Degree coordinates in Double format

LucasDanzinger — Tue, 29 Oct 2019 18:49:56 GMT

There isn't an option for that currently. You could do some QString manipulation and split at the space, remove the last character of each resulting string, and add a - if S or W

Re: Decimal Degree coordinates in Double format

ChrisPalmer2 — Tue, 29 Oct 2019 19:06:05 GMT

That's what I ended up doing. Thank you for the answer!

topic Re: Decimal Degree coordinates in Double format in Qt Maps SDK Questions

Decimal Degree coordinates in Double format

Re: Decimal Degree coordinates in Double format

Re: Decimal Degree coordinates in Double format