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rgkresek
What happens when you check the Reverse Geocode box to "find altitude". My GPS (BT-Q1300) appears to load in altitudes but they are all negative numbers. When I do a Reverse Geocode to find the location, it changes all of the altitudes to positive numbers with no relationship to the original values. Can someone try to explain what might be happening?

Thanks,
Bob
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houdah
Hi!

Starting with HoudahGeo 2.2, altitudes may be retrieved from Google Maps during the reverse geocoding operation. These values are determined by Google Maps to be the ground altitude at the respective locations.

Any altitude values you may have had before reverse geocoding were measured by your GPS track logger.

Best,
Pierre Bernard
Houdah Software s. à r. l.
https://www.houdah.com

HoudahGeo: One-stop photo geocoding
HoudahSpot: Advanced file search utility
Tembo: Easy and effective file search
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brakhage
Hello,

Altitude seams to vary from sources even with Google Things. When we capture altitude through Google Earth, it's different from the API use.
By example, my appartement is at around 260 m in Google Earth (it depends on the zoom), but the highest altitude in Paris is 130m... But from the Reverse Geocoding use, the altitude is 95 m (GeoNames or Google Map).
So, it's a bit weird...


Cheers,
Pascal
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houdah
Hi!

GeoNames does not have altitude information. HoudahGeo always gets that from Google Maps API.

Best,
Pierre Bernard
Houdah Software s. à r. l.
https://www.houdah.com

HoudahGeo: One-stop photo geocoding
HoudahSpot: Advanced file search utility
Tembo: Easy and effective file search
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brakhage
Ok, so it's stranger as Google Maps and Google Earth don't have the same altitude.
But, I found an issue : when the "facteur d'élévation" (in the preference of Google Earth, 3D View) is set to something else to 1, it multiplies the altitude. Mine was set to 3, so I have to divide the altitude got by HoudahGeo by 3, so it is 86 m and not 260 m.
It's not the same as Google Maps, but it's closer.
There is probably something to do with the value got by HoudahGeo in Google Earth.


Cheers,
Pascal.
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rgkresek
Pierre,

When I exported locations and altitudes to the iPhoto originals using the latest HoudahGeo release, the date and time got loaded correctly but the altitude in iPhoto is blank.  There is an altitude shown in HoudahGeo, it just didn't seem to make it into iPhoto.

Bob
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houdah
Hi!

I unfortunately have not yet found a way to pass on altitude information to iPhoto.

Best,
Pierre Bernard
Houdah Software s. à r. l.
https://www.houdah.com

HoudahGeo: One-stop photo geocoding
HoudahSpot: Advanced file search utility
Tembo: Easy and effective file search
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rgkresek

So it sounds like the recommended workflow should be to definitely write the geocode info back to the photo originals before importing into iPhoto.  This method seems to keep the altitude info.  Is there anything else, other than altitude, that might be lost when directly using the iPhoto database?

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brakhage
Where can we find altitude in iPhoto ?
I didn't find this information anywhere (and it's not store in the iPhoto database used to set the Places)
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houdah
Hi!

iPhoto shows GPS Altitude in the Extended Info window.

If you are using iPhoto 8.0.2, you also have the option to select "Rescan for Location" from the contextual menu.

This works for some file types, but fails silently for others.

Best,
Pierre Bernard
Houdah Software s. à r. l.
https://www.houdah.com

HoudahGeo: One-stop photo geocoding
HoudahSpot: Advanced file search utility
Tembo: Easy and effective file search
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brakhage
Ok, thank you very much, I never took care about this.


Cheers,
Pascal
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