[SoC] [OSM-dev] GSoC OpenSurveyor week report #7

Fri Aug 23 09:19:52 PDT 2013

As for the timestamps-only solution, it is solely to save battery life of
the phone/tablet. As I know, dedicated GPS loggers can last for several
days and you can just turn on recording and put it in a backpack. I hope
that not using GPS on the phone will give it some extra hours of life,
which is important on lengthy surveys.
Android's GPS is absolutely capable of reporting subsecond GPS timestamps.
Actually, it reports a plain Java longint millisecond value which I export
as ISO date/time in XML.

I would like to see the JOSM plugin as well, but so far no information
about it from Ilya.

On Sat, Aug 3, 2013 at 11:58 PM, Viesturs Zarins <viesturz at gmail.com> wrote:

> Also, can you expand on the idea of recoding just timestamps.
> Nowdays every device has GPS. The only benefit I see is saving battery
> with dedicated GPS logger...
> You would need subsecond precision time on the device running OpenSurveyor
> - can you read that off GPS sensor? Network based time sync?
>
> How is the JOSM plugin going? I would like to do an end-to-end test.
>
> Viesturs
>
>
> On Sat, Aug 3, 2013 at 7:53 PM, Viesturs Zarins <viesturz at gmail.com>wrote:
>
>> Cool, i really hope that we have a great app at the end of week #13.
>> Meanwhile what is the most useful way I can help you along? Unfortunately
>> I don't have the free time to do actual coding.
>>
>> Waiting for week 8 :)
>>
>> Viesturs
>>
>>
>> On Sat, Aug 3, 2013 at 2:15 PM, Pavel Melnikov <positron96 at gmail.com>wrote:
>>
>>> Hello Viesturs and thank you for report!
>>>
>>> Yes, so far the app looks much like OsmTracker, though one fundamental
>>> difference is data format for export - it is not an .osm file, but a data
>>> that will be used in JOSM plugin to create an osm file manually there. A
>>> plugin is being created by Ilya Zverev who is a mentor for this project.
>>> One more fundamental difference is that OpenSurveyor can work without GPS
>>> present on the device (and without map). It records marker timestamps that
>>> could be used on desktop to assign position based on external GPS track
>>> recorded by other navigator system (garmin, etc)
>>>
>>> And yes, most of the features related to map UI that you mentioned are
>>> on the todo-list, including freehand drawing and manual placing predefined
>>> markers on the map. Though I do not think WMS will be implemented
>>> (Simplified TMS as used in web-based maps probably will)
>>>
>>> On Sat, Aug 3, 2013 at 3:47 AM, Viesturs Zarins <viesturz at gmail.com>wrote:
>>>
>>>> Hi Pavel,
>>>>
>>>> I have been following your OpenSurveyor updates and I'm excited on the
>>>> "walking papers idea". I tried the built app and worked so far without
>>>> crashes.
>>>>
>>>> So far you seem to be duplicating the OsmTracker functions. It would
>>>> make sense to start with the hardest / most useful feature first (the map)
>>>> - as it would impact the app design greatly. I would hate to see the SOC
>>>> done without getting to the most valuable feature. Getting an OsmTracker
>>>> clone is not of any use.
>>>>
>>>> Anyway, it's nice to see somebody picking up where OsmTracker stopped.
>>>> Some stuff I really would like to see implemented (in no particular
>>>> order):
>>>> - recording for images heading (automatic or manual) (check out how
>>>> Ingress is doing it with portal submission GUI).
>>>> - ability to save POIs by manually placing a point in a map.
>>>> - selectable map background (OSM render, Bing maps, other sources,
>>>> preferably full WMS support)
>>>> - drawing freehand shapes on the map, (select a preset and draw an
>>>> outline).
>>>> - deletion/editing of POIs (you already have this).
>>>> - displaying existing POIs in a separate layer, because raster maps
>>>> often omit POIs close to other map features.
>>>>
>>>> Keep in mind that there are two quite different use cases for a
>>>> surveying app:
>>>> - a fresh region with no precision data - the GPS track is the main
>>>> reference. OsmTracker is already doing pretty good job here.
>>>> - densely mapped region possibly with precision data import / high
>>>> precision imagery tracing - main activity is adding features to existing
>>>> map. Placing a point relative to existing lines is more precise than GPS.
>>>>
>>>> Also how can I use the export files? A plugin for JOSM?
>>>>
>>>> Cheers,
>>>> Viesturs
>>>>
>>>>
>>>> On Fri, Aug 2, 2013 at 9:49 PM, Pavel Melnikov <positron96 at gmail.com>wrote:
>>>>
>>>>> Hi everyone.
>>>>> I am having problems with my Internet provider (and he is having
>>>>> problems with hardware) and that limits my ability to code very much. So
>>>>> "done" list for this week is not that impressing:
>>>>>
>>>>> *Done this week:*
>>>>>
>>>>>    - "Take photo" action is implemented (Closes #2)
>>>>>    - Markers can be deleted from the list (if they contained external
>>>>>    files, those are also deleted)
>>>>>    - New version of XML preset file, with localization postfix
>>>>>    applied to titles. One preset can be used for several languages. See
>>>>>    https://github.com/positron96/opensurveyor/wiki/Preset-XML-format#localization
>>>>>    - Almost full localization into English and Russian.
>>>>>    - Reworked button layout. It handles various number of buttons
>>>>>    nicely, leaves no extra space on edges. With >9 buttons it reduces sizes of
>>>>>    buttons
>>>>>    - POIs can be edited after creation by clicking on the item in the
>>>>>    list
>>>>>    - A lot of fixes and small improvements
>>>>>
>>>>> *TODO: *
>>>>>
>>>>>    - Start work on a map UI
>>>>>    - Make session persistent (autosave and continue unsaved session)
>>>>>
>>>>> *Problems:*
>>>>> Damn internet provider!! Can't code anything without stackoverflow and
>>>>> google.
>>>>>
>>>>> As the last week, binary package can be found here:
>>>>> https://github.com/positron96/opensurveyor/releases/tag/soc-week7
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> dev mailing list
>>>>> dev at openstreetmap.org
>>>>> http://lists.openstreetmap.org/listinfo/dev
>>>>>
>>>>>
>>>>
>>>
>>
>
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