[Talk-ca] BC2020i and Mapathons with High Schools

[john whelan]

Buildings Canada?

I was involved with something in Ottawa.  I deliberately used JOSM and the
building tool plugin.  It went very smoothly and a fair number of buildings
were accurately mapped.  The mappers were requested to come with JAVA
preinstalled.  I had two laptops set up that new mappers could start off
with and we had sufficient resources that we could take them fairly quickly
through the steps and get them mapping.  The number of buildings mapped per
new mapper was in the order of 60 per minute.

Make sure you have spare mice with you.

There were a number of other mapathons as part of geoweek that used iD.
Unfortunately the quality of mapping was not that high leading to
compliants about the data quality.

Building numbers from mapathons from new mappers anything from four to
twenty buildings each.  This is from cleaning up in currently Malawi where
a fair number of iD mappers are still not managing to tag a building with
building=yes.

If you are running just one session then validate by looking over their
shoulder.  If more than one line up some resources to quickly validate and
use JOSM for this.  The faster the feedback the better the response.

If you are thinking of grading the work watch out for someone coming along
and either correcting the work as in validation or simply deleting it from
a quality point of view.  Remember that some GIS people like to do
population estimates based on the square meters of the buildings so
accurate mapping helps.  Buildings that are mapped at twice the proper size
screw up the population estimates.

Have fun.

Cheerio John



On 23 Jan 2018 7:46 pm, "Jonathan Brown" <jonabrow at gmail.com> wrote:

> Looking for anyone who has done a BC2020i mapathon event with high school
> students. We are hoping to run one in Niagara, Durham and Northumberland
> regions this winter/spring.
>
>
>
> Jonathan
>
>
>
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