#tm-project-6028 #EliminateMalaria #Thailand #MissingMaps #ThailandNMCP
This is a real mess. There are buildings placed on top of existing buildings, there are multiple buildings drawn as if they were a single building. Terrible. Why did you draw your buildings right on top of the existing ones? I see that you have done this dozens of times in this same area. What were you thinking?
All of thse of buildings were contributed by mappers who are working to help eliminate malaria. Great. But this sort of mapping will not help your cause.
I'm going through and deleting your additions but it's a big job. The Bing imagery you used is badly out of alignment so even the buildings added by your colleague (พิชัย บุญทัน) are poorly positioned. Wow, what a mess!
Please try to understand what you did and why. And please do not add any more data until you fully understand my comments.
I never draw building on top of other already drawn. Also the system would not allow it, flagging an error. One time I only slightly overlapped, because buildings are very close, and the system flagged it. So I'm not sure why this issue happened. Before shouting to someone which is trying to help, you might try to advise how to improve, or maybe thinking that there could be system issues, instead of saying bullshit like "what were you thinking?".
btw, I'm not sure who is this พิชัย บุญทัน. How do you assess this is my colleague?
Regarding Bing imagery, this is the one suggested to be used, so I don't understand your comment about it, and you are not suggesting a solution.
Sorry to be so direct but I have really never seen such poor technique. The buildings were present for a year before you added yours. It is inexplicable how you could have done what you did. And then, even if the buildings were somehow invisible to you, your "buildings" sometimes included shapes from several closely spaced but clearly _individual_ buildings. That's why I asked what were you thinking.
Using Bing imagery is not the problem. All imagery must be adjusted by downloading GPS traces and then moving the imagery until highways line up with those traces. After doing that, you can add objects with some confidence that they are positioned properly.
Whether you use Bing, ESRI or Maxar imagery, it still needs to be aligned properly and the only way to do that is by using GPS traces.
Start by reading this:
There are many other places to learn about this process but that should help.
I said พิชัย บุญทัน is your colleague because he uses the exact same hashtags as you. Even if you don't know him or her personally, I consider him your colleague.
You are a new mapper and ordinarily I am very polite to new folks but we have seen so many come along lately who do weird stuff and use bad techniques that my patience has worn thin.
Thank you for asking that your work be checked. I'm sorry I couldn't be more accommodating.
It's ok, I understand your frustration since you have to correct others. I apologize if I did wrong, and surely will put more attention. However, I'm still wondering how come I can add a building if same building is already mapped. On top of being very sure the area was unmapped, the system is not allowing to overlay buildings, so this is a bit concerning to me, because I'm not sure how can I be 100% sure I'm not overlapping and causing again the same issue. We have got a training before starting mapping, and there was no mention of the GPS tracing, I will have a look at it, thanks. Finally, regarding พิชัย บุญทัน, for sure he/she is not my colleague, of course we cannot control who uses the hashtags, so nvm.
Thank you, have a nice day ahead.
oh weird, I googled this name พิชัย บุญทัน and I found a similar one (พิชัย ใชยบุญทัน) brings to my linkedin profile. It must be some kind of auto-translation to Thai of my name?!? I never created a Thai profile, I don't even know the language, really quite weird...
According to my Thai wife, those two names are probably the same man using two different forms of his name. Can't be sure.
I agree with you that something is wrong with a system — I have never been able to add a building over the top of another one. One way that could happen is if you are working from some sort of a "task manager" that allocates work spaces for different mappers and it didn't work as intended. A good task manager will make sure to not allocate the same area to two different mappers. Are you using a task manager?
I have a couple more questions:
What is the full name of the project you're working for? Are you getting paid for your work?
Thanks for your willingness to work together.
Hi, yes I'm using this tasking manager https://tasks.hotosm.org/
No, I'm not getting paid. Our Company supports charity activities, and we all try our best to contribute. Unfortunately, with the COVID situation, most activities on the field in Singapore are not practical because of the social distancing we still have to adhere to. This mapping activities is a way to still contribute somehow. And I really apologize if my activity is causing more troubles than any help. This is surely not my intention. I will use the advice you are providing, hope will improve.
I know that one time, the system was hanging once I saved the task. At the end it did not save any of the mapping I've done. So I've to redo again. Now I suspect somehow it indeed saved 2 times, maybe it kept the saving job in the background. That is the only explanation I have. With this in mind, if this hanging issue happens again, I will not proceed to re-do the mapping, even if I get a clear map. Maybe I will just wait one day and see if the system just delayed the saving.
Okay, Carlo. Thanks for the information. I suggested JOSM because of its power but unless you want to become a regular contributor it might not be worth the time it takes to learn how to use it.
No problem about the extra work. I'm glad you want to contribute time to worthwhile projects and I'm happy you are willing to work on improving your technique.
Returning to the duplicate buildings - yep, it was probably some sort of error in the HOT task manager. Sometimes there are synchronization issues between two users working in the same area or even two versions of editing by the same user, that cause "conflicts" upon uploading. These are very difficult to resolve and most OSMers dread them. It looks like that's what happened here.
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