Index

# What's New

(Click the headers for details)

## Geocoding from Reference Photos

HoudahGeo 2.4 may use geocoded photos from your iPhone 3G as reference points for geocoding other photos taken within the same time range.

## Support for speed

When appropriate data is available from the GPS track log, HoudahGeo is able to assign speed information to your photos.
While most GPS devices do not record speed information, you may use third party tools like GPSBabel to infer speed information for track log data points. The appropriate command would be:
gpsbabel -t -i gpx -f in.gpx -x track,speed -o gpx -F out.gpx

## Support for viewing direction

When appropriate data is available from the GPS track log, HoudahGeo is able to assign viewing direction information to your photos.
Obviously this is most useful when used with a compass-equipped GPS track logger which is attached to your camera.
HoudahGeo also allows for determining the viewing direction by specifying an offset between the heading and the viewing direction. E.g. you may know for a set of photos that it was shot out of the right window of a moving car.
You may use third party tools like GPSBabel to infer heading information for track log data points. The appropriate command would be:
gpsbabel -t -i gpx -f in.gpx -x track,course -o gpx -F out.gpx

## Choice of metric and US units

Altitude and speed values may now be displayed and entered using a choice of metric or US units. You always have the option of specifying an alternate unit when keying in values.

## Latitude / longitude formats

HoudahGeo displays latitude and longitude using decimal degrees. It however accepts and converts input in a wide variety of formats. E.g 41° 13' 11''

## iPhoto '09 Places

HoudahGeo 2.3 is able to detect photos managed by iPhoto'09 and offers to notify iPhoto of changes upon writing EXIF tags. For this feature to work, you must:
- Use the latest version of iPhoto'09
- Have iPhoto library pre-loading enabled in HoudahGeo
- Choose to tag masters/originals
- Not have HoudahGeo create copies
- Not have HoudahGeo create XMP sidecars
Also, there should not be any existing XMP sidecars.

## Map-based geocoding

HoudahGeo 2.2 features an all-new interface for convenient map-based geocoding. Bookmarks are now also available for offline use from the Inspector panel.