Prune GPS tool

Hi,

In case you can beat me to implementing this I have a feature request.

I would like to be able to make a selection and save just that selection. I do paragliding, and on a winching day I'll make say seven flights. So I'll have one big track, and want to separate the different flights. Currently I have to load the big track 7 times and delete everything before and after that flight to achieve what I want.

Another really simple thingy: How about "right-click sets end-of-selection" together with left-click sets start-of-selection" would make setting the selection really quick.

Being in a low country (The NETHERlands), GPS errors sometimes give (small) negative numbers for height. So I'd like to be able to add a constant to a track.


Oh, one last thing.... On the debian machine at work, the plot chart function creates a gnuplot window, but nothing in it.

Feature Request: Show photo geotag status in list of photos. an indication they are geotagged and possibly an indication they have been modified from what was initially loaded. I'm going through 20,000 photos ( 2 years of constant travel - started out as two months ). Wouldn't even attempt it without tools like Prune!

Interesting idea, thanks! But do you have any idea how this could be shown in an obvious way without cluttering up the interface? I guess you could add a star (*) after the name of the photo to indicate whether they are connected or not, or whether they are modified or not, but nobody would understand what that star meant. You could show the photo name in a different colour but that would look messy and again nobody would understand it.

@rewolff: I'm not sure if this is sourceforge muddling things up, and mixing the threads together. I'm sure I replied to your suggestions earlier. But if I didn't, then here goes: save just the selection: yes, already implemented, for saving as text, gpx or kml right-click sets end of selection: no, but click and then shift-click is very quick now adding a constant offset to the altitude: yes, already implemented for the currently selected range. Range -> Add altitude offset debian and gnuplot: don't know, sorry, it works fine here on debian. check the path to gnuplot, check whether the chart to svg works, check whether normal plots work on gnuplot without prune. give me feedback if it's still a problem. Sorry I missed this thread earlier, if I really did miss it. I've a suspicion that the forum has mixed up two threads with the same title :(

RE: Feature Request: Show photo geotag status in list of photos. Ideally the list would let the user see and edit Lat, Long, Altitude and even accuracy. I believe the user can currently drag the side panel to make it larger and see more data. The ability to bring up a separate window with this capability would work as well. Minimally, just changing the color to indicate modified yet unsaved data would be good. I think many people would catch on to the meaning but a tool tip for the list might be beneficial. An extra column titled "GTag" and then anything in that column would suffice to show the photo as having coordinates. The minimal stuff would be great as it would allow me to more easily go back and forth taking advantage of the strengths of other exif/geotag programs ( i.e. another java program, geoTag ) and let Prune focus on GPS tracks. Noticing file changes and where necessary re-reading the exif data would make this type of workflow more efficient too.

"the list would let the user see and edit Lat, Long, Altitude and even accuracy" - I think we're talking about completely different things here. You're not suggesting that those fields should be shown IN THE LIST, are you? The list is to show you which photos you have, not to show the details of each and every one. If you click on a photo's name in the list, then you see the details of that one. For example, you see a preview of the photo on the right. You also see "Connected:Yes" or "Connected:No" for the currently selected photo. If it says yes, then the photo has coordinates, and those coordinates (including lat, long, altitude and timestamp but not accuracy) are shown in the point details above. By editing the point's coordinates, you're editing the coordinates attached to the photo. I agree that a small indicator IN THE LIST of whether it has been modified or not would be a good idea, it's just a question of how to make it obvious what that indicator means. It couldn't be longer than a star or a small icon though. You also raise an interesting point about file changes, currently Prune just reads the details when it's loaded.

Yes, we're in agreement. I think a small indicator in the list would be very useful and not deviate development time away from Prune's focus and strengths working with gps data. It would be beneficial to indicate the photo having coordinates ( i.e. from exif data ) as well as its status of being connected to the current gps data. I'm assuming that 'connected' is not synonymous with being 'geotagged' ? I'll try familiarizing myself with the code asap.

If a photo has coordinates in the exif data, then when you load the photo, Prune will create a point for it. Then the photo is "connected" to this point, and the status says "Connected: Yes". If the photo doesn't have coordinates in the exif data, then it will be shown as "Connected: No". If you then connect it to one of the existing points, then its status will change to "Connected: Yes" and it will take the coordinates from that point. Whether 'connected' is synonymous with 'geotagged', I'm not sure: if you don't save the coordinates to the exif data then the photo still isn't "geotagged" in that sense, the photo remains unmodified, but within Prune it has been connected to a point. If you save to exif (using exiftool) then yes the photo becomes geotagged or geocoded or whatever term you want to use.

The speed/altitude chart has no X-axis as per v.11.2. It is not clear if that is - the time, - the number of track points or - the distance (all of which would be interesting options to toggle between).

True, it's never had one. It's always "the number of the point", where the point can be a track point OR a waypoint. Not all points have a time (even if a device records times, often it doesn't do so for waypoints), and a chart of distance would have gaps in it if you had multiple sets of data loaded. Plus of course waypoints are often out of sequence (or in alphabetical sequence) so the distance values would all be heavily distorted. By using the point number as an x axis value, you can always see all the points, and always select a point by clicking on it, without gaps. If you want to draw diagrams with either time or speed as your x-axis, then see the options under View -> Charts.