[OpenLayers-Users] OpenLayers 3 projections

[VictoriaH]

Hello,

I am trying to build a map that uses OSM layers. I know that the default
projection in OL is epsg:900913 or 3857. I have some local mapserver RASTER
layers that are in 4326. I have several questions:

1. Can I reproject the OSM base layer to 4326?
2. Or, do I have to project the local 4326 mapserver raster into 3857?

Depending on the answers to these questions, can someone point me to some
code on how I do one or the other?

I ultimately am going to be building some user interface tools that require
that the user click on the screen. I must return the epsg 4326 coordinates
from the local mapserver wms layer to query the raster itself for pixel
values. Is there anything I should know given my questions above on how I
might do this?

Thanks Much, V



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