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brazilian terrain data from IBGE

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Re: brazilian terrain data from IBGE

Postby lomar » Sat Feb 10, 2018 1:52 am

Hello All!
well, i decided to restart my work on this project, this time using the brasil-2014 shapefiles from IBGE. I know it's still a long way to go and i still have to learn some of the tools i need, but i think i can make a little progress by now
if someone has some ability with gis, wed, taxidraw and terragear and wants to help, just reply here.

That's how the shapefiles look so far
Image

I plan to also use OSM data in this project, and also the latest airports from the Xplane Gateway
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Re: brazilian terrain data from IBGE

Postby Catalanoic » Sat Feb 10, 2018 12:22 pm

Really nice, there're people that often fly in Brazil in FG, getting some type of terrain updates, OSM data and xplane airports we can get a whole new better experience and realism
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Re: brazilian terrain data from IBGE

Postby D-ECHO » Sat Feb 10, 2018 3:24 pm

This looks really good. In case you need help with terragear or so, I have created a few sceneries with it, so if you want you can ask ;) Good luck!
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Re: brazilian terrain data from IBGE

Postby lomar » Sat Mar 10, 2018 8:25 pm

Guys, i'm a bit worried about the resolution of the shapefiles i have. Would like to hear the opinion of more experienced developers.
This is the area of Rio de Janeiro and Guanabara bay. what do you think?

Image

This is the same area on OSM
https://www.openstreetmap.org/#map=11/-22.8591/-43.1831&layers=H

Also, i have the impression that more important cities and populous areas are a bit more detailed than the other areas but i still cannot confirm it.

so, I look forwarrd for comments. Sorry for my slow development, i've been busy with work and college things
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Re: brazilian terrain data from IBGE

Postby lomar » Fri Oct 26, 2018 3:05 am

Hello, guys!
Sorry for my abscence, i've been very busy.
so, i'm slowly restarting this project. I've just downloaded the entire set of data for Brazil from OSM. It's a crazy amount of data! :o
Image

Again, i don't have much knowledge on scenery generating, so any help is welcome! If you want to help, just PM me.
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Re: brazilian terrain data from IBGE

Postby lomar » Mon Feb 25, 2019 8:40 pm

hello, guys!
i just wanted to say That THIS PROJECT IS NOT DEAD!!
i've been looking for more data at the IBGE website and found some landcover data that has a 1:250,000 scale and looks much better than the previous 1:1,000,000 data that i had found earlier(i think it even looks better than CORINE data). I also found something called "continuous cartographic database", but i don't know if this would be of any utility for this project. Unfortunately, this 1:250,000 data is restricted to only some few states and much of the country is available on 1:1,000,000 only. THis is Rio de janeiro in this new landcover data so you can compare with the previous on i posted earlier
Image

BTW, i think this data will need some editing before bein used for scenery generation(also because i plan to use OSM data together so i get the best possible scenery). If someone has any experience with GRASS and would be willing to help me, please contact me.
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Re: brazilian terrain data from IBGE

Postby xDraconian » Tue Feb 26, 2019 12:27 am

lomar wrote in Mon Feb 25, 2019 8:40 pm:If someone has any experience with GRASS and would be willing to help me, please contact me.

Hi @lomar, What do you need help with regarding GRASS?

Some general tips:
Keep all the shapes in a single layer while you work with it. Only split them once you are satisfied with the level of detail and ready to run TerraGear.
The two most important GRASS tools:
    v.clean - I typically use clean, snap, and rmarea most often.
    v.generalize - reduce the complexity of the shapes to something more frame-rate friendly
I work the files with an EPSG that is in Meters.
I convert to EPSG:4326 immediately before splitting the vector layer for TerraGear.

Let me know if you have specific questions.
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