[HOT] Fwd: Accuracy ( international women's day)

Russell Deffner russell.deffner at hotosm.org
Mon Feb 29 16:03:30 UTC 2016

No problem Gertrude – happy to know I was on the right topic :)


That is a bit of comparing apples to oranges, you will probably want to use both. I don’t use OSMtracker myself, so not sure the specifics, but if it’s using cell tower location vs. GPS, then it may not be very good in Zambia and will depend on how many cell towers, signal strength, etc. If it uses the phone’s GPS (if it has one) then you should be ok.  Field papers is very ‘low-tech’ – basically you’re sketching on a map which you can then upload to trace/edit from – so it’s only as good as the person drawing. You might also think about taking pictures to either use in JOSM, or you can check out Mapillary (https://www.mapillary.com/) so you can have a picture/visual when you get back to the office for editing.


In general, I would suggest a workflow such as:

- Trace as much ahead of time remotely/using imagery – having major roads, bigger/landmark buildings will help navigate/use Field Papers

- Have as many people with OSMtracker or a GPS, etc. recording their tracks – great for getting roads, etc.

- Have other people with Field Papers, Mobile collection apps, etc. marking things like business details (things hard/impossible to see from overhead) and taking pictures


Then when you go to edit you should use all of the available data to make the best map!


Most importantly, have fun!



Russell Deffner

Email:  <mailto:Russell.Deffner at hotosm.org> Russell.Deffner at hotosm.org

OSM/Skype: russdeffner

Humanitarian OpenStreetMap Team (HOT)

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From: Gertrude Hope [mailto:trudyhope7 at gmail.com] 
Sent: Monday, February 29, 2016 8:54 AM
To: Russell Deffner
Cc: HOT at openstreetmap.org
Subject: RE: [HOT] Fwd: Accuracy ( international women's day)


Hi Russ,

Thank you for getting back. We are going to map in The field and some people questioned The accuracy of OSMtracker for it is what we are going tp use. 

Which is more accurate between fieldpapers and OSMtracker?


On Feb 29, 2016 5:49 PM, "Russell Deffner" <russell.deffner at hotosm.org> wrote:

Hi Gertrude,


I am not quite sure what kind of ‘accuracy tools’ you’re asking about.  It sounds like you will be mapping in the field? If so, GPS units are going to be your best bet (unless you have access to professional survey equipment).  We often supply our field missions with Garmin Etrex-20 units (http://sites.garmin.com/en-US/etrex/). We also often employ field papers to go along with/in-replacement of GPS (http://fieldpapers.org/). 


There are also many mobile applications for survey/field-data-collection, I think this is a good place to start: http://wiki.openstreetmap.org/wiki/Software#Mobile_Devices 


Let me know if that’s not what you’re asking,




From: Gertrude Hope [mailto:trudyhope7 at gmail.com] 
Sent: Monday, February 29, 2016 8:41 AM
To: HOT at openstreetmap.org
Subject: [HOT] Fwd: Accuracy ( international women's day)


Can anyone tell us The tools we can use for accuracy in Mapping.

---------- Forwarded message ----------
From: "Gertrude Hope" <trudyhope7 at gmail.com>
Date: Feb 29, 2016 5:54 AM
Subject: Accuracy ( international women's day)
To: <HOT at openstreetmap.org>

We are orgainising an event on 8th March women's Day in Zambia. We would like to know The best tool that can give us accuracy, Cause we are going to map sanitation I.e toilets, water taps and waste in a slum Where The plots and toilets are close to each other. 

Thank you
OSM Zambia
OSM name: TrudyHope
Skype: Trudy.hope2
+260967020779 <tel:%2B260967020779> 

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