BajaNomad

INEGI new Topo Key

PaulW - 10-22-2021 at 02:09 PM

My latest investigation needed to use the INEGI topo maps.
I am using https://www.inegi.org.mx/temas/topografia/ per Davids link to find maps using my Localizacion key. Trouble the key has changed and I cannot find the new key.

Example I wanted to view H11B45 for the canyons on the east side of the mountains.
My old saved Pdf H11B45 was dated 1993 was called San Rafael, and the 2016 version of H11B45 is now called Mikes Sky Ranch and covers a slightly different area. Sure looks like the topo and place names remain the same, at least not any noticable change in my view?
So, How do I find the new Key?

Please dont refer to the various keys published on Nomad.

Bickimapa has instructions for uise of the new Key but are links are broken.

mtgoat666 - 10-22-2021 at 02:22 PM

Quote: Originally posted by PaulW  
My latest investigation needed to use the INEGI topo maps.
I am using https://www.inegi.org.mx/temas/topografia/ per Davids link to find maps using my Localizacion key. Trouble the key has changed and I cannot find the new key.

Example I wanted to view H11B45 for the canyons on the east side of the mountains.
My old saved Pdf H11B45 was dated 1993 was called San Rafael, and the 2016 version of H11B45 is now called Mikes Sky Ranch and covers a slightly different area. Sure looks like the topo and place names remain the same, at least not any noticable change in my view?
So, How do I find the new Key?

Please dont refer to the various keys published on Nomad.

Bickimapa has instructions for uise of the new Key but are links are broken.


At the website you linked, click on 50,000 scale and zoom the map. Click on individual rectangles I. Map view to see available 50,000 scale maps for download.

PaulW - 10-22-2021 at 02:43 PM

Correct and the map labels have changed.
Yes I can get the list and pick out the map by the old H11 number. Seems like the old way was much easier by using the key and just getting one not a choice of many.

mtgoat666 - 10-22-2021 at 03:00 PM

Quote: Originally posted by PaulW  
Correct and the map labels have changed.
Yes I can get the list and pick out the map by the old H11 number. Seems like the old way was much easier by using the key and just getting one not a choice of many.


I like the choices. The geopdf (and others) is good for GPS programs. Some non-gaps compatible versions have better graphics for reading. And the multiple date versions can be interesting.

4x4abc - 10-22-2021 at 08:11 PM

I use the "download" section
select state
select scale
and tell them the page I want

works much smoother than it used to

Screen Shot 2021-10-22 at 9.08.21 PM.png - 106kB

geoffff - 10-22-2021 at 09:21 PM

Yes, what 4x4abc says -

Go to https://www.inegi.org.mx/temas/topografia/#Descargas
Paste your map key code into the search box
Then narrow your search by changing the Escala to 1:50 000

It then shows a few maps for various formats and years. These all appear to cover the same expected area for the key.

For my CalTopo work, I downloaded *all* of the available 50k maps for Mexico. Only a few maps here and there turned out to be mislabeled, or otherwise incorrect.



[Edited on 10-23-2021 by geoffff]

4x4abc - 10-22-2021 at 11:57 PM

and go explore the 20k scale
many new maps are posted by INEGI in that category

cool stuff!

David K - 10-23-2021 at 09:59 AM

Great to see all the GeoPDFs are new (2019) from the few I just looked at in Baja Norte. 50k scale. When I looked at a 20k (2020) map, it was just outlines, no detail?? Did I pick a bad one? ;)
Man, I could spend days looking at these.

PaulW - 10-23-2021 at 10:16 AM

Lots of unusable 20k Stuff fron my several tries

PaulW - 10-23-2021 at 10:19 AM

Using the latest link for finding maps. Sure, makes it easier than in the old days.

As noted above one can choose the date on "Edition Todas" and just get one or none on the list. Leave the entry blank and get all versions.

Geofff: On the form where did you enter “all”?
Can you post your merged Baja INEGI Maps?

B45 comments:
The new name for B45 between 2015 and 2016 tripped my question about a new grid key to see what else has changed. Still no luck searching for an up-to-date grid. It appears the grid numbers are the same.

Regarding B45
I noticed that the 1974 version is the same as the 2016 version with regard to Copal and Copalito. That is Copalito is part of Copal instead of a separate canyon. Copalito merges with Copal west of the valley. Need to correct my canyon list. Canyon entrance is 31 6.25, -115 4.2

B25 Comment:
Checkout 2016 B25 to see if the Pole line map has changed from what we were using back in the day. Hard to see and detail changes.

David K - 10-23-2021 at 10:53 AM

Paul, I have Geoffff's CalTop map link on VivaBaja.com at the top of my many map links... it is listed as:
Baja California, Mexico 'Zoom-In' Topo & Satellite Map

The link is: https://caltopo.com/map.html
(on the menu you can switch between several types of maps, including satellite)

PaulW - 10-23-2021 at 01:44 PM

Interesting map that I have used before. Maybe I do not know how to use it? From my use it bears no resemblance to the INEGI topos

David K - 10-23-2021 at 02:04 PM

That is an INEGI topo map at that link. Zoom in. Use the layers option to see other maps.

[Edited on 10-23-2021 by David K]

PaulW - 10-23-2021 at 02:30 PM

To hard. I focused on the mine N of SF and many roads on INEGI are missing on cal topo.

Any way to get the cal topo settings to show the real INEGI maps?

David K - 10-23-2021 at 03:46 PM

Quote: Originally posted by PaulW  
To hard. I focused on the mine N of SF and many roads on INEGI are missing on cal topo.

Any way to get the cal topo settings to show the real INEGI maps?


I will await Geoffff to reply, because I am seeing the same map on Caltopo as on the INEGI pages. The layers allow you to change the map... On a PC, it's over on the side menu. On a phone, in the upper right corner.

4x4abc - 10-24-2021 at 12:58 AM

the 2019 G12C59 SAN LUIS GONZAGA topo download on INEGI is dead
your browser will show the image
but your dedicated pdf app will not

almost every new sheet from INEGI has some edits on it

geoffff - 10-24-2021 at 09:25 AM

Paul, here is a direct link to the Caltopo map website with the INEGI 50k showing. It is called "Scanned Topos" in their menu (though most of the INEGI 50Ks used are not actually "scanned"). Yes, that website is complicated. But this direct link should make it easy-ish:

https://caltopo.com/map.html#ll=27,-113&z=8&b=t

The link automatically switches you to Scanned Topos mode, and centers you on Baja.



[Edited on 10-24-2021 by geoffff]

geoffff - 10-24-2021 at 09:31 AM

Quote: Originally posted by PaulW  
Lots of unusable 20k Stuff fron my several tries

That is what I found as well. That's why I stuck with 50k maps for the CalTopo project.
Quote: Originally posted by PaulW  
Geofff: On the form where did you enter “all”?

Hah! No, it's is not on the form anywhere. I had to made myself some tools to automate the process.

geoffff - 10-24-2021 at 09:53 AM

Quote: Originally posted by 4x4abc  
the 2019 G12C59 SAN LUIS GONZAGA topo download on INEGI is dead
your browser will show the image
but your dedicated pdf app will not


Yes, that GeoPdf image is corrupted. The start of the file is fine, but about ⅓ the way through the data bytes become all zeros. I ended up using the 2003 version of G12C59 for CalTopo.

[Edited on 10-24-2021 by geoffff]

PaulW - 10-25-2021 at 08:52 AM

Geoffff,
Thanks, Got it and it works great.
I thought I could view it by using one of the settings but no luck
Quote: Originally posted by geoffff  
Paul, here is a direct link to the Caltopo map website with the INEGI 50k showing. It is called "Scanned Topos" in their menu (though most of the INEGI 50Ks used are not actually "scanned"). Yes, that website is complicated. But this direct link should make it easy-ish:

https://caltopo.com/map.html#ll=27,-113&z=8&b=t

The link automatically switches you to Scanned Topos mode, and centers you on Baja.



[Edited on 10-24-2021 by geoffff]