[mapserver-users] [MapServer-users] working with ESRI coordinate systems in proj.db

[Mark Volz]

Hello,

I figured it out… well sort of anyways.  Since I could not figure out how to reference the projection number I instead tried to include the underlying parameters within my map file. It works without reporting any errors…  but I presume that this solution is not ideal.

MAP
  PROJECTION
    “init=epsg=3857”
  END #Map Projection
  LAYER
    PROJECTION
     "+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  <>"   #Parameters for ESRI 103749
    END #Layer Projection
  END #Layer
END #Map

Please let me know if someone has a cleaner way of accessing ESRI 103749 directly from the projection database.

Thank You!

Sincerely,
Mark Volz, GISP

From: Basques, Bob (CI-StPaul) <bob.basques at ci.stpaul.mn.us>
Sent: Friday, January 7, 2022 9:14 AM
To: Mark Volz <MarkVolz at co.lyon.mn.us>; Steve Lime <sdlime at gmail.com>
Cc: mapserver-users at lists.osgeo.org
Subject: Re: [mapserver-users] [MapServer-users] working with ESRI coordinate systems in proj.db

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________________________________
Mark, will this work :  https://epsg.io/6505<https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fepsg.io%2f6505&c=E,1,-m19Vo45bheJyLgTY2JCBcd_XUrLWQn6QKZjEMSVR8g0gxz3EkgWDHBmvpjU2mPsidunA_PuuFwgYKOheQ1IZR_iW-_8csMBrX15O5L0rIUvxU7Idi16JkyUeIc,&typo=1> or are you trying to import data from your ESRI service.

We (Jim) went a little different route here, we read the ESRI rest service and stuff everything into a Postgres database as a cache and work against that.  We can set whatever EPSG that we need to this way for interoperability.

Bobb



From: MapServer-users <mapserver-users-bounces at lists.osgeo.org<mailto:mapserver-users-bounces at lists.osgeo.org>> on behalf of Mark Volz <MarkVolz at co.lyon.mn.us<mailto:MarkVolz at co.lyon.mn.us>>
Date: Friday, January 7, 2022 at 8:20 AM
To: Steve Lime <sdlime at gmail.com<mailto:sdlime at gmail.com>>
Cc: "mapserver-users at lists.osgeo.org<mailto:mapserver-users at lists.osgeo.org>" <mapserver-users at lists.osgeo.org<mailto:mapserver-users at lists.osgeo.org>>
Subject: Re: [mapserver-users] [MapServer-users] working with ESRI coordinate systems in proj.db

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Steve,

I am using ms4w version 4.0.5, which I think comes with PROJ 5.20

Thank You


Hi Mark: Not something I've tried to do so hopefully someone else can weigh in. What version of Proj are you using? --Steve

On Thu, Jan 6, 2022 at 11:19 AM Mark Volz <MarkVolz at co.lyon.mn.us<mailto:MarkVolz at co.lyon.mn.us>> wrote:
Hello,

Could someone help me with setting up mapserver to use a non ESRI projection that is already stored in proj.db?  The coordinate system is for Lyon County, MN #103749 and is stored with ESRI as the authority.  I know that we can set up Mapserver to use Web Mercator by setting the adding "init=epsg:4326" to a projection block.  Unfortunately I cannot access my counties coordinate system by setting the projection with “init=esri:103749”.

Thank you for any help!

Sincerely,
Mark Volz, GISP
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