@SavyGust27 This is a rather curious way. The doc says: https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/lexical/ifcsite.htm
The key part is: "Defined as integer values for degrees, minutes, seconds, and, optionally, millionths of seconds with respect to the world geodetic system WGS84"
So let's say you have a WGS84 coordinate like this:
40°27'12.3"N 3°41'17.9"W
40.453418, -3.688308
According to the documentation you should use:
RefLatitud: [40, 27, 12, 300000]
RefLongitud: [-3, 41, 17, 900000]
And you will then be able to fetch those in the solar analysis tool:
Cheers!
@steverugi I think so. They are kept independent. The only thing that can be imported to solar analysis from the georeferencing information is True North:
You can fetch in Solar Analysis the value clicking in the download arrow:
From the value entered in the Georeferncing->True north Panel
Although independent it makes sense that the Lat/Long is calculated from the Georeferencing information (Easting/Westing + Mapping standard)
Cheers.
Just for the record. I have always difficulty to find online calculators that provide the grid convergence (angle to True North).
Here is an excellent site with a lot of online calculators, namely Geographic to Grid and Grid to Geographic: https://geodesyapps.ga.gov.au/geographic-to-grid https://geodesyapps.ga.gov.au/grid-to-geographic
So for the previous example here are the easting/northing and Angle to True North for the Georeferencing panel:
Cheers!
Comments
@SavyGust27 This is a rather curious way. The doc says: https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/schema/ifcproductextension/lexical/ifcsite.htm
The key part is: "Defined as integer values for degrees, minutes, seconds, and, optionally, millionths of seconds with respect to the world geodetic system WGS84"
So let's say you have a WGS84 coordinate like this:
40°27'12.3"N 3°41'17.9"W
40.453418, -3.688308
According to the documentation you should use:
RefLatitud: [40, 27, 12, 300000]
RefLongitud: [-3, 41, 17, 900000]
And you will then be able to fetch those in the solar analysis tool:
Cheers!
Incidentally , I think we have a bug in the conversion to decimal when the degrees are negative. Let me raise a PR for that :)
Cheers.
Now properly converting those numbers:
See PR dms2dd and dd2dms functions to use microseconds and handle negative degrees #6763
Cheers!
super helpful @falken10vdl thanks
by the way, that is only informative and for solar analysis, it doesn't affect georefering of the model, correct?
@steverugi I think so. They are kept independent. The only thing that can be imported to solar analysis from the georeferencing information is True North:
You can fetch in Solar Analysis the value clicking in the download arrow:
From the value entered in the Georeferncing->True north Panel
Although independent it makes sense that the Lat/Long is calculated from the Georeferencing information (Easting/Westing + Mapping standard)
Cheers.
Just for the record. I have always difficulty to find online calculators that provide the grid convergence (angle to True North).
Here is an excellent site with a lot of online calculators, namely Geographic to Grid and Grid to Geographic:
https://geodesyapps.ga.gov.au/geographic-to-grid
https://geodesyapps.ga.gov.au/grid-to-geographic
So for the previous example here are the easting/northing and Angle to True North for the Georeferencing panel:
Cheers!
Thanks for the response. it is very helpful and insightful
Nice. Every country seems to have a agency which provides a service for converion to lon/lat
Your own government garantees some good values. I don't reconment using any vague calculation in whatever software
For the Netherlands we use this.
https://www.nsgi.nl/coordinatenstelsels-en-transformaties/tools/online-coordinatentransformatie