[mapserver-users] How to reference ESRI projections that are already in proj.db

Mark Volz MarkVolz at co.lyon.mn.us
Fri Feb 25 09:44:33 PST 2022


Hello,

I am having trouble trying to reference ESRI authority coordinate systems that are within proj.db within MapServer.   I know this should work because I can use the QGIS can use the ESRI authority coordinate systems and QGIS apparently uses the same proj.db database as MapServer.  I tried referencing the projection using init=esri:103749 and init=epsg 103749.  Neither option appears to work.  I can however manually and the projection parameters.

Here is a snippet of my code:
MAP
PROJECTION
"init=epsg:4326"
END  #Map Projection
LAYER
PROJECTION
#WORKS
"+proj=lcc +lat_1=44.25 +lat_2=44.58333333333334 +lat_0=44.19555555555555 +lon_0=-95.85000000000001 +x_0=152400.3048006096 +y_0=30480.06096012192 +a=6378559.758 + b=6357173.65471281 +units=ft +no_defs  <>"
#Does not work
"init=esri:103749"
"init=esri:103749"
                                End  #Layer projection
                END #Layer
END #Map

Please let me know if you have any thoughts regarding how we can use ESRI authority projections.

Thank You

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