North Arrow With True and Magnetic North

3777
6
11-19-2012 06:27 PM
BradleySmith2
New Contributor III
Does anyone know a simple way to create a compass rose with true and magnetic north?  Just inserting a north arrow doesn't really do justice to map users.
Tags (2)
0 Kudos
6 Replies
JohnSobetzer
Frequent Contributor
I don't think you can easily get what you want in ArcMap yet.

See http://blogs.esri.com/esri/arcgis/2010/03/19/adding-a-declination-diagram-in-arcmap/ but in 10.1 things are a bit easier in that you can manually set the angle through the properties.

As for getting what you want, here's a link to the Ideas: http://ideas.arcgis.com/ideaView?id=087300000008E0a&returnUrl=%2Fapex%2FideaList%3Fc%3D09a300000004x...
0 Kudos
ZacharyHart
Regular Contributor
Does anyone know a simple way to create a compass rose with true and magnetic north?  Just inserting a north arrow doesn't really do justice to map users.


Are you talking about an actual declination compass rose like you'd see for nautical use? Basically this would like a circle within a circle...

If you are talking about an actual north arrow, would something like this work for you?

[ATTACH=CONFIG]19442[/ATTACH]

also:

http://mappingcenter.esri.com/index.cfm?fa=ask.answers&q=550http://
0 Kudos
BradleySmith2
New Contributor III
Are you talking about an actual declination compass rose like you'd see for nautical use? Basically this would like a circle within a circle...

If you are talking about an actual north arrow, would something like this work for you?

[ATTACH=CONFIG]19442[/ATTACH]

also:

http://mappingcenter.esri.com/index.cfm?fa=ask.answers&q=550http://


Yes, your example is what I'd like to be able to create.
0 Kudos
ZacharyHart
Regular Contributor
Yes, your example is what I'd like to be able to create.



Hey there, that was created with simple graphic elements.

ESRI's north arrows could stand to have a bit more variety as well.
0 Kudos
KeithMcKinnon2
New Contributor II
I need a compass rose with magnetic declination to add to data driven pages that are aligned with a strip map.  I am creating trail maps for search and rescue.  The pages all have different orientations based on the trail feature class alignment.  I need a compass rose that includes magnetic declination that will update automatically for each page.  This information is crucial for orienteering in canyons and in situations where GPS is not available.  Why has this request been deferred for over 5 years despite numerous requests in the forums? http://forums.esri.com/Thread.asp?c=93&f=989&t=227449#690245
0 Kudos
JohnSobetzer
Frequent Contributor
No simple answer but perhaps some workarounds:

See http://www.esri.com/esri-news/arcwatch/0313/add-a-true-north-arrow-to-your-arcmap-page-layout.  You may need to use two north arrows to get what you want, one that rotates and one that is true north. 

Another possibility you might look at is to create your own north arrow symbol showing true/grid/magnetic north for an extent and then use that in your project.  See http://gis.stackexchange.com/questions/28056/how-to-make-an-emf-into-a-character-marker-symbol-north...

If the precision of your declination over the extent of your project is such that you might need several different symbols to reflect the changing declination, you could create them as jpg or some other raster, and then use the Data Driven Pages to update the picture for each map as required.  See http://resources.arcgis.com/en/help/main/10.1/index.html#//00s900000022000000.  In addition you could put the actual declination in degrees in a text field in your index layer, add a text box below the arrow and have it dynamically update with each page.
0 Kudos