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Mar
16
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Dec
3
comment How to convert NAD 27 to WebMercator in using the ESRI Silverlight API? (C#)
On your first comment, yes, I understood the click event was the one to implement and did that accordingly in my own project. Thanks for clarifying! On the second one, I agree; but that is not a decision for me to make (although I suggested that) we get the data from a vendor in that format and there are other applications in the company that already process the NAD27 data; so it is not a simple change. Can this library re-project the data to WGS84? I assume it can, right?
Dec
3
comment How to convert NAD 27 to WebMercator in using the ESRI Silverlight API? (C#)
Quick question, Is that application on the screen shot created with the ESRI toolkit? Or is it google maps? The reason I ask is because, in reading the ESRi documentation, I found that for 102100 they have a unit of ESRImeters... whatever that is. So, I guess they came up with their own unit for projections?? I may have misunderstood the documentation, so don't trust my statement completely.
Dec
3
comment How to convert NAD 27 to WebMercator in using the ESRI Silverlight API? (C#)
Thanks again. It does project; but south of the actual position. I measured the shift and they are off roughly 14 miles south from where they are supposed to be. So, I guess there is something going on with the 3857 projections that is not projecting the latitude correctly. I need to work on something else; but I will go back to this in a couple of days or so. Thanks for your help! Much appreciated.
Nov
30
comment How to convert NAD 27 to WebMercator in using the ESRI Silverlight API? (C#)
thanks for all your efforts! this is awesome! I will try this and see how it works.
Nov
30
comment How to convert NAD 27 to WebMercator in using the ESRI Silverlight API? (C#)
Thanks for your reply! I tried this solution already and because of the amount of data our application handles dynamically (adds and deletes markers on the fly per user's demand) it is a little slow and (this may be something with our server) it seems to shut the operation after many continuous hits with 3000+ projections. That is why I like this solution doing the projections locally better.
Nov
30
comment How to convert NAD 27 to WebMercator in using the ESRI Silverlight API? (C#)
Also, if I were to add the flattening how would I do that? any ideas? Thanks!
Nov
30
comment How to convert NAD 27 to WebMercator in using the ESRI Silverlight API? (C#)
Thanks for your comment. I know my markers are off because my reference layer has been thoroughly tested. We can also simply add a World Imagery layer to our map and see the physical locations we are referring on our own layer and the markers are off from those points. So, I don't think it gets any better than that to know we are off. How off are the markers, not much. I don't have them in front of me at the moment; but speculating I'd say anything between 200 and 500 meters and if I remember well, they all seem to be shifted in a north-west direction.
Nov
27
awarded  Student
Nov
27
asked How to convert NAD 27 to WebMercator in using the ESRI Silverlight API? (C#)