Thread: Google Earth

NZTopo does the same Pengy

It does to a degree Rusky, but NZtopo doesnt have the same zoom capabilities , and the ariel pics are dont look anything like as clear to my old eyes.
Can you do the DOC boundary overlay on Topo ? I cant see it

I cant find a way to mark tracks on NZ topo either, or save a screenshot, and even marking a spot seems longwinded. Nah, I will stick with WAMS

Ok you win Pengy. Ill have to try use WAMS. DoC boundary line is something id love to know ho to do.

Goggle Earth uses WGS-84 or UTM (Universal Tranverse Mercator). NZTM (or the latest Topo map) is quite different, but can be converted (very painfull for hunting etc). I'm not a GIS expert, but do test and provide GPS/GNSS support fro Surveyors and contractors all over the world.

There is many ways to get what you what; set your GPS to WGS-84 and then Goggle Earth positions will work easy. Or, import the Topo maps and Doc boundaries to Goggle Earth. Looks like this:



Are with the Topo layer too:



This data comes from the Koordinates.com site and then exporting the layers as .KML/.KMZ file. These can also be loaded in Apps like Backcountry Navigator (what I use) and the newer Garmin and a few others.

This is the same area with DOC boundaries in Backcountry Navigator (on Android devices only)

Originally Posted by Tussock

Hang on. NZGD1949, the projection for New Zealands old map series, was not WGS 84. But New Zealands new map series, NZTM2000 is a UTM/WGS 84 grid?

If you go to your Google Earth is set to UTM (Tools > Options > 3D view tab > [show lat long box] tick UTM)

Then, in theory, providing what you are using NZTM2000 it should match up. However, there are digital copies of NZGD1949 floating around, and certain organisations have not changed over and will not for some time, both are still in use.

You can't say NZtopo anymore, as it covers both!

But WAMS is better anyway, and it is a website we should support.

Correct, the NZGD1949 was not WGS84, but Google Earth using WGS84. The new system is NZTM200, similar(not the same though) to the UTM system that can be used all over the world. Positions can be converted on the Linz site here Convert coordinates between NZ coordinate systems

Converting NZTM to UTM for Emu Stream in the picture above, not the same coordinates:
NZTM ------------------- UTM zone 58 (south)
Northing Easting --- Northing Easting
5214802.0 1505884.0 -- 5192678.2 1055768.9


WAMS is really good for view that areas, I do use it a lot. However, it does rely on an internet connection. Having the exported .KML files on the GPS is real handy.

Originally Posted by Tussock

Sorry, my mistake. Same grid, different origins.

Should be a scale factory too.

Stuff all that flapping around. I am just going to buy Maptoaster which has ariels as well as DOC boundaries etc.

Originally Posted by Pengy

I am just going to buy Maptoaster

WTF

Originally Posted by Kaweka_Neil

WTF

But only when I can afford it. Freshmap is 2008 version, so a bit out of date now. I will keep the computer based version as I like it for planning trips.

This shit is technical man. Im still Goggling the first post so I can work out what it all means

Originally Posted by Pengy

YEP

Looked at WAMS and that is just what I was after. Found the coordinates of that clearing I spotted at......... Cheers guys.

I wish I had the know how to load this to my gps http://maps.doc.govt.nz/Viewer/Index.html?viewer=rwa
satellite/topo huts tracks and doc plus doc hunting.

Originally Posted by oneipete

I wish I had the know how to load this to my gps http://maps.doc.govt.nz/Viewer/Index.html?viewer=rwa
satellite/topo huts tracks and doc plus doc hunting.

Nothing is impossible. With time and money, you can just about do anything!

What make and model is your GPS?

I was a bit disapointed with that DOC mapping website. It runs slow, and the ariels are poor quality comapared to others. Shame really, as they have had the likes of WAMS as a yard stick.