topic Using projection for visualization in Arcgis.com and Explorer on line with API Flex in ArcGIS API for Flex Questions

Using projection for visualization in Arcgis.com and Explorer on line with API Flex

hervéparmentier — Thu, 30 Jun 2011 19:32:26 GMT

I'm a new user of Arcgis serveur, and i 'm trying a simple map service with vector data.

First i try to publish using API REST service in Arcgis directory with :

- Arcgis explorer on line : i can see my map but without base map, and i don't now what to do for adding it. I can verify the coordinate projection
- ARCGIS.com : i can see my map... but near Lagos in Nigeria, and the map talk about the Drome river, in France.

I try french Lambert 93 projection coming from Arcgis desktop listing and the WGS 84 projection but the same result

Do you have a idea please to help me.....

Thank by avance

HPa

Re: Using projection for visualization in Arcgis.com and Explorer on line with API Fl

BjornSvensson — Wed, 06 Jul 2011 14:11:54 GMT

HP,
I'm not sure I understand 100%, but I think the question you are asking is "why does my map service of France show up in Nigeria?". Here are a few things that might clarify it for people trying to assist you 🙂

Q1. When you published your service, can you go the Service Directory page for that service?
The Service Directory page will usually be:
http://yourserver/ArcGIS/rest (if you are using ArcGIS Server .NET)
For example:
http://maps.esrifrance.fr/ArcGIS/rest/services/demo_FFR/MapServer

Q2. What projection does it say your Map Service is in?
For example, the Map Service above has:
"Spatial Reference: 2154"

Q3. Is the map cached or not?
"Single Fused Map Cache: false" - means that the map is not cached. If it's "true", then the map is cached.

Q4. If you click the "View In ... ArcGIS JavaScript" - does it work? What happens?

Q5. If you click the "View In ... ArcGIS.com Map" - does it work? What happens?

Q6. Is the service available to the public (so that we can see it directly)?
If your ArcGIS Server is on an internal network - is it a secured service?

Re: Using projection for visualization in Arcgis.com and Explorer on line with API Fl

hervéparmentier — Fri, 08 Jul 2011 10:36:59 GMT

Hi Bjorn,

thank you for your answer.

The problem is like you said : "why does my map service of France show up in Nigeria?"

That is my answer of your 5 questions :

Q1. When you published your service, can you go the Service Directory page for that service?
I just use it to pick up the URL of the Rest services

Q2. What projection does it say your Map Service is in?
That's a french projection in Wkt comming from the library projection of arcgis desktop V.10 , but i haven't any Wk ID like EPSG code b : RGF93 / Lambert-93 Code: EPSG::2154 Type: ProjectedCRS Status: Valid Domain: France - onshore and offshore, mainland and Corsica. (source: http://spatialreference.org/ref/) .
May i modify the parameters ?

That's my result of projection :
PROJCS["WGS84",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",700000.0],PARAMETER["False_Northing",6600000.0],PARAMETER["Central_Meridian",3.0],PARAMETER["Standard_Parallel_1",44.0],PARAMETER["Standard_Parallel_2",49.0],PARAMETER["Latitude_Of_Origin",46.5],UNIT["Meter",1.0]]

Q3. There is no map cache it's a feature service in first test.

Q4. If you click the "View In ... ArcGIS JavaScript" - does it work? What happens?

i can see my map will all the layers.

Q5. If you click the "View In ... ArcGIS.com Map" - does it work? What happens?
ArcGIS.com Map", i ses my map service near Lagos.
And for arcgis explorer on line, I see y map without base map.

Q6. Is the service available to the public (so that we can see it directly)?
If your ArcGIS Server is on an internal network - is it a secured service?

Arcgis is developed on internal network, like an intranet network. It is a secure service.

Q5.

Re: Using projection for visualization in Arcgis.com and Explorer on line with API Fl

hervéparmentier — Fri, 08 Jul 2011 10:39:46 GMT