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

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06-30-2011 12:32 PM
hervéparmentier
New Contributor
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
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BjornSvensson
Esri Regular Contributor
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?
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hervéparmentier
New Contributor
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.
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hervéparmentier
New Contributor
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.

For precision i have in Arcgis Explorer on line my map to this WGS 84 coordinates :
7°34'54''N and 3°54'33" E

Thank you by advance,

Hervé Parmentier
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