How to: Aerial map with topo lines

[Jelf]

In case anyone finds it useful, here is how you can display topographic lines on top of an aerial.

The following link starts Gmap4 (I am the developer) and if you zoom in until the scale in the lower left says 500 ft then you will see topo lines on the Google aerial for anywhere in the U.S.

http://www.mappingsupport.com/p/gmap4.php?ll=38.640824,-83.571710&z=5&t=h,Topography_lines&rest=http://services.nationalmap.gov/ArcGIS/rest/services/USGSImageryTopoLarge/MapServer?name=Topography_lines&layers=34,35&transparent=true

To start zooming in to your area of interest, try Menu ==> Search to get close and then zoom/pan.  To manually zoom, use your mouse wheel or the sliding control near the upper left corner of the map.

To turn the topo lines on/off, click the button in the upper right corner of the map then scroll down to the Overlay section and click "topography_lines".

The topo line data comes from a GIS (Geographical Information Service) server run by the feds. That GIS data displays the topo lines on top of any basemap.

The Gmap4 homepage has a FAQ, examples, quick start info (in the Help file) and more to quickly get you up to speed.

Gmap4 default map: http://www.mappingsupport.com/p/gmap4.php (does not include GIS topo line overlay)

Gmap4 homepage: http://www.mappingsupport.com/p/gmap4.html

Joseph, the Gmap4 guy
Redmond, WA

[Suilleabhain]

very nice app

[Hunting3m]

been using gmap4 for a while now, love it. Thanks

[Geno C]

Perfect, was lookin for something like this. Thanks!

[growalot]

Sounds great...but the first link I clicked on I saw the little box that says use at your own risk...hhhmmmmnot too sure I personally.... would click on again...lol

[Jelf]

Thanks for the kind words.

 

@growalot - That "use at your own risk" lingo is on the maps for two reasons.

1.  There is no socially acceptable cure for stupidity.

2.  There are way too many overly aggressive attorneys in the world.

 

Joseph, the Gmap4 guy

[growalot]

Thanks...I'm just a nervous Nelly...lol...for instance...I will never do business at Targets now...

[Geno C]

this mapping has been out for some time? i used a program exactly like it maybe a year or 2 ago. if it has been out i forgot all about this site.

[Jelf]

this mapping has been out for some time? i used a program exactly like it maybe a year or 2 ago. if it has been out i forgot all about this site.

 

I launched Gmap4 in 2009 on http://www.nwhikers.net where I post as Joey.  That is one of the forums that allow Gmap4 to run in an iframe.  This lets people include a 'live' map in the body of their post on the forum.  Since *many* forum posts talk about a place, why not show a map of that place?

 

For example:

http://www.nwhikers.net/forums/viewtopic.php?t=8007725

 

Forums like this one are also welcome to let Gmap4 be used in this manner.  In order to maintain site security typically the admin would create a whitelist of apps that are allowed to run in an iframe in the body of a post.

 

Joseph

[JALA RUT]

Nice app....Good job with it!

[Geno C]

I launched Gmap4 in 2009 on http://www.nwhikers.net where I post as Joey. That is one of the forums that allow Gmap4 to run in an iframe. This lets people include a 'live' map in the body of their post on the forum. Since *many* forum posts talk about a place, why not show a map of that place?

For example:

http://www.nwhikers.net/forums/viewtopic.php?t=8007725

Forums like this one are also welcome to let Gmap4 be used in this manner. In order to maintain site security typically the admin would create a whitelist of apps that are allowed to run in an iframe in the body of a post.

Joseph

Ahh ok... I remember this site. I have used this before and I forgot all about since I didn't really use the topo. I've been lookin for a topo overlay exactly like this the past few weeks since i Moved upstate. It's perfect, thank you

[Jelf]

The ability to see topo lines on aerials got such nice reviews that this feature is now built right into the program.  From now on you do not need any special Gmap4 link to use this feature.

For more info please see the “What’s new” page:
http://www.mappingsupport.com/p/gmap4_whats_new.html

Joseph, the Gmap4 guy

[fasteddie]

Looked at it on the home computer . Pretty neat !