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Stereographic Polar projection

ZeinaNassar

Any existing js / API to generate polar projection (stereographic) of a map?

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JohnGravois

here is a list of projected coordinate system IDs...

what do you mean "generate" a projection of a map? typically we use the JS API to refer to a map service that already has a predefined coordinate system. ArcGISDynamicMapServiceLayers can reproject on the fly. ArcGISTiledMapServiceLayers cannot.

you can use a geometry service to reproject a feature, if you're trying to do something else it would be helpful if you could provide some more specific details.

ZeinaNassar

Thank you for the prompt reply. What I meant is that I am already using google maps API v3(mercator projection) to map lat/long positions. However this projection does not represent the points at the polar areas (North and South). Therefore, it would be helpful to have a polar projection to represent these polar locations (i.e. http://w4.jcommops.org/website/DBCPS/viewer.htm ) I was wondering of any implementation of such projection using javascript.
Thank you again.

ZeinaNassar

JohnGravois

i couldn't really speak intelligently about the Google Maps API, but using our JavaScript API it would be a pretty simple task to publish a map service with a polar projection and display it in a web application as either a cached or dynamic map service layer.

ZeinaNassar

Thank you again. As I am a newbie to arcGIS map service, can you please advise on references that I can look at in order to implement the polar projection.
Regards .

JohnGravois

no worries! 🙂

specifying the projection for the map is something you do in our desktop software before you even publish a map service, so here are some links to our Desktop and Server help...

once you have a service up and running, you should be able to build a simple javascript app like this sample.

derekswingley1

If you're using an ArcGIS Server service that can be projected on the fly(dynamic map service, feature service, image service) then ArcGIS Server can project your data into any projection. Here's an example of projecting the World Population Service to Arctic Polar Stereographic: http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Population_World/MapServer/export?bbox=-12279634.13210453%2C-3847513.08889383%2C10591278.152258359%2C5481664.75628363&bboxSR=3995&layers=&layerdefs=&size=1189%2C485&imageSR=3995&format=png24&transparent=false&dpi=96&time=&layerTimeOptions=&f=html

And here it is being used in a simple JS API page: http://jsfiddle.net/usst7/

ZeinaNassar

Thank you all for the replies.
Just to confirm, in order to be able to get this projection running, we need to use ArcGIS desktop software, charges apply to get such software, correct?
Thank you.

derekswingley1

Thank you all for the replies.
Just to confirm, in order to be able to get this projection running, we need to use ArcGIS desktop software, charges apply to get such software, correct?
Thank you.

Yes. You would publish an ArcGIS Server service via ArcGIS Desktop. Neither is free.

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