Recent diary entries
Lac Horo (18,900 ha) is located on The Inner Niger Delta in Northern Mali, it is separated from the river by a dam and a sluice gate. The Niger River is the longest river in West Africa and the third longest in Africa.
Delta topography is a complex mix of submerged lower areas and higher, unflooded areas known as tougérés. The floodplain consists of a vast network of river channels with leveés separated by low, clay-based floodplains.This natural depressions are filled once a year when the Niger River overflows.
Lac Horo is the only lake that has been developed for irrigation in Mali. In the bowl of Lake Horo, soil fertility is maintained by alluvial deposits of the Niger flood.
Prior to regulation, Lake Horo, contained at least some water throughout the dry season in years of good rainfall, but dried out completely by April in dry years. Now the sluice linking the lake with the Niger is opened in mid-November (earlier in years with poor rainfall) to all the lake to fill.
Floodplain recession agriculture is traditionally done along the banks of the major rivers, lakes and seasonal watercourses after the rainy season. In October-December flood recession enables sorghum and cowpea cultivation on floodplains, maize and sweet potato cultivation on exposed river banks using only soil moisture and harvest occurs on February-May. The funding window for this season goes from August to September.
OSM Mapping tags that I'm using:
waterway=drain => artificial waterways used for irrigation
natural=wetland => area subject to inundation by water, or where waterlogged ground may be present
seasonal=* => indicates if the wetland is seasonal
natural=floodplain => floodplain is land adjacent to a stream or river that experiences occasional or periodic flooding
I was mapping in rural Darfur today and discovered an entire city which was completely unknown/unmapped. It did not appear in Google, Bing, OSM or anywhere else, not even as a village dot. It's 90 km SSE of Nyala, Sudan (latlon: 11.28, 25.14, i.e. http://www.openstreetmap.org/#map=14/11.28/25.14) with an airstrip, two large markets, and large street grid. I've mapped it now, anyone care to find a name for the city?
I just created some unclassified roads, but I am very, very new to this; please let me know that what I did was O.K.
In May (2013) I produced a set of graphs and numbers on our contributor growth based on analysing the regular changeset dumps. Given that this was half a year ago I believe it is time for an update.
Our total contributor number has continued to grow at something around 7'000 per month giving a total of 384'262 at the end of November:
The number of active contributors per month continues to show a slight upward trend: The jump in April 2009 coincides with anonymous edits no longer being allowed.
Which reflects itself in the number of active contributors per year too (the year end number for 2013 will be around 133'000).
The above graph also shows that the number of contributors that contributed in a previous year is showing growth too. Note the lack of "old" editors going from 2008 to 2009 is likely due to anonymous edits going away in 2009. This is likely also the reason for other low counts in the early years.
And while it is a bit too speculative to state reasons, we do see, compared to active contributor growth, over proportional growth in the number of changesets. Going over 500'000 per month for the first time in September of this year:
After reading the request for assistance for mapping the Carles area I decided to spend a couple of hours and see what needed to be done. Most of the blocks were completed so I spent most of my time just validating the blocks that had not yet been reviewed. I found a couple of additions that needed to be made but mostly all the blocks were complete. It appears that the task is now up to 100%! Awesome work to all that contributed!
I started to look at the other half of the estate and it seems to have been tidied up with regard to number marking though many are marked in fading pen enough to make some logic to the scheme. It seems to follow a pattern relating almost to one garage to one flat with some left not so clear as the numbers have gone completely. As the flats where originally numbered on a numbering that best suited neat terraces with numbers jumping across the street (odds to one side and evens to the other) allowing a postman to walk down the street once and deliver all the letters when put in number order. Unfortunately that means that house numbers in Southfield park although theoreticaly still on opposite sides of the road are not really as close to each other when in numerical order anymore as whole blocks dozens of ten of meters away hold each half. There is a possibility that the garages run by the council were also once numbered in a similar fashion to the flats but where rationalised into the current scheme now going into OSM is also possible. the only two distinct garages on OSM from the private side there number too faded to read. When I dissolve the blocks made and add the missing ones then I can begin filling in the other scheme to OSM. I had hoped to go down to Cowley airfield to extend the council site designation scheme across a larger area but I've not had the time yet.
The issue of motivation of mappers has come up a lot lately in different contexts, be it commercial interests and imports, adding specific POIs because they share a common payment form, adding notes that advertise a business, etc.
Ideally, we wouldn't care about why someone is motivated to contribute to OSM- if the data is good, we accept it, and if the data is not good, we don't. Unfortunately the reality is more nuanced than this. The reason that someone wants to add data to OSM can significantly influence the way that they enter the data.
Let's take the extreme example first about notes that are meant to advertise a product, this note here: http://www.openstreetmap.org/note/78163
That note simply says:
We are proud to present our new Search engine http://www.1search.info
Now, I don't think the motivation of this person is very good, and in the meantime the account has been deleted for spam.
But we have more subtle examples of adding businesses to OSM, as shown by our discussion about addresses of offices vs mailboxes.
In regards to imports, there have been concerns that importers may be responding to commercial pressure to get a certain dataset into OSM. So far those concerns have not been validated by facts, but the concerns are real.
I think this question of motivation is at the heart of many of the recent disagreements. Two mappers may have a disupute and that's acceptable. It's also acceptable for a new mapper to come in and make mistakes (I certainly made plenty in my first few months in OSM). But where our community is less tolerant of error is where they feel the motivation of the mapper is poor.
The other reason this is important is that poorly motivated efforts shift the work back to the community. The community is build on improving others work, but when the work is done without caring about the end result, the burden on the OSM community is shifted and the community has to "take up the slack", which moves us from being contributors to cleaning up others' messes.
What can be done about bad user motivation? Or is there anything that can be done? Do we need to raise the bar on new user contributions, or is this just a cost of being a successful project?
Yesterday I've created another repository in MapBBCode project. It is a small script, which does great things.
MapBBCode Loader searches for BBCode on the current page, and if it succeeds, it appends Leaflet and MapBBCode libraries and replaces all [map] bbcode with maps. And if there is a specially marked button, the script adds a map editor to it. Basically, this script allows integrating MapBBCode into forum and blog engines which do not have native plugins for that yet.
I guess nothing can stop MapBBCode from conquering the internet. Even closed-source forum engines (I'm looking at you, vBulletin, which requested $250 license for access to documentation) and lazy administrators. The complete instruction of five simple steps for embedding MapBBCode anywhere is published in the GitHub repo.
The loader requires MapBBCode 1.2, which is now in development and may contains traces of bugs.
But that is not the point: the loader is not supposed to power such one-off demostrations. It serves as a plugin replacement for engines that are hard to modify. For example, shtosm.ru is powered by a closed-source engine, and only MapBBCodeLoader has allowed for maps in it.
Sorry folks, but I'm not in the mood playing jokes with the rumor whether GCHQ operates from within the British Embassy in Berlin.
Today i've added a new diary entry.
Today I came across an edit in the OSM wiki about the map-creating framework uMap with the good news that this webservice can be translated now by the online translation tool Transifex.
I will try to contribute whithin my knowlegde about words, vocabulary and grammar :-)
So I also added uMap to the list of OSM related websites, software or apps that can be translated in multiple languages via certain crowd-based online tools , see Translation in the OSM wiki.
Depending on certain languages, there can be done plenty of words or phrases in your "mother tounge".
Don't hesitate to contact the author of each project there if "your" language is missing in any project you want to contribute to!
I wanted to export all roads in a particular area. After opening the exported OSM using Quantum GIS, i noticed that some roads are not anymore reflected on the map. can anyone tell me what things to do so not to encounter this? i once deleted that road, exported to OSM and open to Quantum GIS. Still it doesnt appear but there are points that are somehow i made in creating that road.
I laughed to myself when I saw a previous home town mentioned in a blog post discussing Battle Grid. I wasn't really active in OSM when I lived in Greenville so I really never looked at the data that much (I think I did map some of the East Carolina University campus since it is usually a black box of blankness).
Tonight I thought I'd take a look at the data to see what all the talk was about. First the southside of Greenville look like a spider web. Forget the missing roads from the explosion of housing that has happened over the past few years. I'm not sure any of the roadways are even remotely in the correct location. Wow! I'm not sure if anyone is actually using this information or not but it is awful.
I'm working on aligning the roads in that area now and will go back to fill in the blank spots. Hopefully someone on the ground can start populating street names and the like. The next time I'm in town I'll try to grab a few and see what I can get done.
Over Thanksgiving holiday I spent some time cleaning up my old home town. I'm pretty happy with the roads within the city limits now. They are mostly correct and contain speed limits and side walks (where applicable).
I did a survey of the downtown area but then lost the captured data. Since I was in a hurry the data was incomplete so I'm not going to be upset with the loss of information (my error completely, btw). Next time I'm in town I'll try to get pictures and address information and get those businesses on the map.
I still need to update the roadways in the Weyerhaeuser/Domtar industrial complex. The railroads were mostly wrong but I was able to remedy those issues in an hour or so. The roadways are going to be more difficult as they are everywhere (I believe the place is completely paved over).
I was also happy to find speed limits on most of the roads along my route from Maryland to North Carolina. Some of the speed limits were incorrect on I-664 and I-64 in the Hampton Roads area but I went through and updated them.
I've found a new tool, Keypad-Mapper 3, to grab address information in a pretty efficient manner. So far I've mapped my way to the post office and back. Since the cold weather is starting to sneak in I probably won't be out there doing much survey work right now.
Over the last 2 weeks, i have been incorporating some of the dictaphone work i did while i was visiting Qatar earlier on in the year and plan to bounce between qatar and the emirates every few weeks depending which to which dictaphone recording i'm listening to. This week i've be working on Al Dhaid city in Sharjah, more precisely the road to Al Dhaid until now, but plan to work on it until its i've completed all the dictaphone work for it.
Would be nice to meet some other OSMers in either country to coordinate efforts in completing more.
Over the last two or so weeks I've been on and off for edits, but two things seem to be occupying my time lately.
Updates with New Imagery
Updating new areas in Burlington and Hamilton, Ontario with the new Bing imagery that was recently added. It appears to be 20-30cm resolution and was taken Spring 2013, but the looks of the progress on some projects I am familiar with.
It looks like Bing went a little wild with their unsharp mask they applied (it can be easily noticed at the edge of tree canopies), but overall the imagery is of high quality and great for editing with.
After reading a MapBox blog post about the outdoors map they are creating and some examples of golf courses being rendered, I decided to try my hand.
I think they turned out quite well and can't wait to see them in MapBox's final rendered product!
That's it for now on my first diary post in 5 years. Maybe I'll do them a bit more often...
- Added area POIs
- Sport panel http://gdzie.bl.ee/#!14/52.4691/13.3841/type=exercise/store=store_all/
- Time slider
- Tourism panel
- More tags in Basic popup
- Multilanguage (in progress)
- Filtering in long dropdown menus.
Best Regards, Adam
City of Surrey, Canad published updated shape files for 2013. Is there any possibility to upload them without editing them by hand?