[HOT] Gentle grump

john whelan jwhelan0112 at gmail.com
Fri Mar 6 23:30:59 UTC 2015

Right the basic idiot guide.

First write down your OSM userid and password.

For task 917 we only care about highways, settlements and buildings.
Buildings if only because if there is one in isolation sometimes we like to
map it rather than call it a landuse=residential.

Start JOSM up, in the edit menu you'll find preferences down the bottom.

We need to allow HOT to remotely control JOSM to feed it the bit to map.
So look for the remote control, usually second button up on the left.
Click enable remote control, ignore the rest.

Now we need to add a plugin, fourth tile down is the plugin button.
Download the list.  Look for buildings_tool they're in alphabetical order,
click it and ignore the rest.

go to http://tasks.hotosm.org/project/917

Read the instructions.

Click on a tile, click on start mapping, select edit with JOSM.

Switch back to JOSM and you'll find its pulled in the existing OSM map for
the tile.

We want to look at the imagery so look across the top, File, Edit etc until
you reach Imagery, for this one we will be using Bing so select Bing.

Now we need to trace over the image.  We'll use two buttons directly under
file, the top one is select, the second one is draw nodes.  Hover the mouse
over them to display the tags.

Zoom in to the image, generally speaking I zoom so that roughly 90 meters
shows on the scale.  Personally I start at the top right corner and use
<Crtl><down arrow> to scan the image.

The following is not the official way to do things but its fast.  Draw
round each settlement but don't tag it.  If you're lucky enough to find a
road joining settlements draw the highway in again don't tag it.  As you go
draw round each settlement you see on the road.  Stick to one type of
highway omit the others for the moment.

The upload button is the fourth button from the left near Tools.

When you upload JOSM will give you a warning, cancel the upload.  On the
right  hand side normally at the bottom you'll see a Validation Results
box, click on the + by the warning.  You'll see untagged ways.  Highlight
the untagged ways and select them.

In tags Add landuse=residential to them all.

Click the upload button once more, again you'll get a warning this time
saying landuse residential has unclosed ways, select these as a group.

In tags Edit and change the tag to highway=unclassified.

Now upload.  You may need your OSM userid and password at this point.

You'll notice that JOSM already has the source of the image filled in and
the HOT tile etc.

Now go back and look for highway=tracks.  Again don't tag until JOSM warns
you on uploading then tag them all at once.

For rectangle buildings press b for the building plug-in, now find the
longest side and mouse click one corner, follow the edge to the next corner
then click again, now drag the mouse to the other side. Click once more and
the building is done and correctly tagged for HOT.

There is a lot more to JOSM but this guide's objective is to get you going
productively quickly.

Cheerio John

On 6 March 2015 at 15:07, Ray Kiddy <ray at ganymede.org> wrote:

> On Tue, 3 Mar 2015 15:12:21 -0500
> john whelan <jwhelan0112 at gmail.com> wrote:
> > Just for the heck of it I ran JOSM validation on a tile I was mapping
> > before touching it.  It turned up duplicate buildings, crossed
> > buildings, lots of highways separated by a few inches etc.
> >
> > Do we need an idiot guide?  A sort of this is how to provide the
> > maximum benefit for the least effort.
> Speaking as an idiot, I would say that the answer to this is yes.
> Perhaps you think I jest....
> > Mine would probably run along the lines of for Africa the convention
> > is only the following values of highways are used for minor highways:
> > path, track, unclassified, use highway=road if you are uncertain.
> > Someone will probably have tagged the secondary and primary highways.
> >  <http://wiki.openstreetmap.org/wiki/Tag:highway%3Dsecondary>
> > If possible use JOSM especially for buildings.  Please map buildings
> > as building=yes do not assume it is a house.
> As a 2-3 times per week mapper (who wishes I could do more), it can get
> frustrating. Lots of projects point to the Africa roads page but that
> page is hard to interpret for any particular context. There is a lot of
> information.
> And I hate to say it but I use ID and it drives me nuts. This may be
> from browser/js/platform issues. I am using Firefox 36.0 on Ubuntu
> 14.04 LTS. But I have looked at JOSM and it is somewhat bewildering and
> I have no idea how long it would take to get over the first humps of the
> learning curve. For now, my annoyances with ID are tolerable.
> If one was able to look at a task and see what tags where being used
> and how often within just that task, this might help the "African
> roads" situation.
> > People use maps to get from one place to another, if the highways are
> > joined up then routing software such as comes as part of OSMAND can be
> > used.   Look for highways around settlements that connect to other
> > settlements.
> >
> > <Crtl><arrow> in JOSM will navigate vertically or horizontally making
> > scanning easier.
> I should see if there is a cheat sheet for JOSM. It would be nice to
> know what control-shift-elbox-J does and all that. Of course, these may
> be platform specific (eg Windows keys vs Linux keys vs MacOS X keys).
> > I assume that most of these errors have crept in because JOSM
> > validation was not used.  I suspect that the immediate feedback from
> > JOSM might assist our less skilled mappers to improve their skills.
> >
> > Cheerio John
> There needs to be validation on input and obviously both ID and JOSM do
> some, but can validation be done on the server? This would be better,
> especially if the results can be communicated to users. A HOT task could
> have a "Validations" tab. I, for one, would like to see the things that
> have been already fixed in data in that task. It would let me know when
> there are things not to do. If I am going to make a mistake within a
> task's maps, it is at least a bit likely that others will make or
> have made similar mistakes in the same context.
> Again, seeing the phrase "JOSM might assist our less skilled mappers",
> I have to wonder what you are thinking about here. Any sentence with
> both "JOSM" and "less skilled mappers" in it is going to lead to bad
> things. JOSM might be easier than it is, but I am not even very sure of
> that. Sometimes complex tasks require complex tools. One just hopes
> that there are options between the "very-simple-but-also-brain-dead"
> tool and the "amazingly-powerful-but-shockingly-unintuitive" tool. I am
> not saying that this is what JSOM and ID are, but hopefully you see my
> point.
> So, grump back at ya. :-)
> cheers - ray
> _______________________________________________
> HOT mailing list
> HOT at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/hot
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/hot/attachments/20150306/169f1e72/attachment.html>

More information about the HOT mailing list