Data Plotted at Wrong Location

Tue Dec 11 10:40:27 EST 2007

Toan,

  Well it's a good first step.  You need to now test Proj
with your epsg file (to confirm Proj can file and load the
epsg file) and your coordinates (to confirm your EXTENT is
set to cover the project coordinates).

PROJ_LIB needs to be set to something like
/usr/local/share/proj/nad  (notice the nad at the end).
This is the directory containing your "epsg" file.

Then you need to test Proj with your EPSG coordinate
definition and valid coordinates using Proj's cs2cs command:

cs2cs +init=epsg:4326 +to +init=epsg:42304
-79 44

and compare the result to your EXTENTS.

Brent Fraser
GeoAnalytic Inc.
Calgary, Alberta

----- Original Message ----- 
From: "Tran, Toan (MCYS)" <Toan.Tran at ONTARIO.CA>
To: <MAPSERVER-USERS at LISTS.UMN.EDU>
Sent: Tuesday, December 11, 2007 7:58 AM
Subject: Re: [UMN_MAPSERVER-USERS] Data Plotted at Wrong
Location

Hi Brent,

Yeah... I was shuffling the X and Y around to see if it make
a
different, but either combination doesn't seem to work.
I check the PROJ_LIB environment variable, it wasn't set.
Setting the
variable in Solaris and Apache to /usr/local/share/proj
doesn't seem to
work.

Executing:
# proj +proj=lcc
79.725 43.715                (input)
5619844.75      7781484.62   (output)
43.715 79.725                (input)
1266934.34      10025427.15  (output)

Does that confirm Proj4 is working correctly?

I been stuck here for awhile...
This going to haunt me if I can't figure out what's wrong...

Thanks a lot
Toan

-----Original Message-----
From: Brent Fraser [mailto:bfraser at geoanalytic.com]
Sent: December 10, 2007 3:26 PM
To: Tran, Toan (MCYS); MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] Data Plotted at Wrong
Location

Toan,
 In your connection string you've got: x='Y' y='X'.  Try
changing it to
x='X' y='Y'.  Although I don't know why it would work on
Windows but not
Solaris.

  You may want to confirm your Proj installation is working
correctly on
Solaris by converting a few coordinates using the proj
command on the
Solaris command line.  I think you may need to ensure the
PROJ_LIB
environment variable is set to the location of the Proj epsg
file.

Brent Fraser
GeoAnalytic Inc.
Calgary, Alberta
----- Original Message ----- 
From: "Tran, Toan (MCYS)" <Toan.Tran at ONTARIO.CA>
To: <MAPSERVER-USERS at LISTS.UMN.EDU>
Sent: Monday, December 10, 2007 12:57 PM
Subject: Re: [UMN_MAPSERVER-USERS] Data Plotted at Wrong
Location

Hi Brent,

I have include the config.map and the .csv file

I have thought if EXTENT could be an issue, but modifying
the minX,
minY, maxX, maxY doesn't seem to have any effect.
Those large number in the .csv file are added because I
wanted to test
the plotted points...

One thing that I find very puzzling is that we have tried
the map-server
using two different platform:
- Windows XP
      - Solaris SPARC / UNIX

Both platform use almost the exact config.map file and .csv
file But for
some reason, we did not have any problem on the Window
Platform... All
the points are plotted with little trouble... but then
again, in Windows
the map-server was package very nicely in a binary form.

Also, I pay very close attention so case-sensitive issues
(i.e. epsg
V.S. EPSG). Could the problem be some other case sensitivity
issue in
Soalris/UNIX?

Thank you so much for your help so far.

Much appreciated
Toan

-----Original Message-----
From: Brent Fraser [mailto:bfraser at geoanalytic.com]
Sent: December 10, 2007 2:26 PM
To: Tran, Toan (MCYS); MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] Data Plotted at Wrong
Location

Toan,

  Looking at the snippet of the csv file you provided below,
you've got
some coordinates in a Geographic (decimal degrees of
latitude and
longitude) and some in a projected system (meters LCC?).
Mapserver
usually allows only one coordinate system definition per
input file, so
this is not valid. They need to be all Geographic
coordinates or all
projected.

  And check your extents in the map file.  Would they cover
the points in the csv file?  It might be helpful if you
included your
map file.

Brent Fraser
GeoAnalytic Inc.
Calgary, Alberta

----- Original Message ----- 
From: "Tran, Toan (MCYS)" <Toan.Tran at ONTARIO.CA>
To: <MAPSERVER-USERS at LISTS.UMN.EDU>
Sent: Monday, December 10, 2007 11:51 AM
Subject: Re: [UMN_MAPSERVER-USERS] Data Plotted at Wrong
Location

Brent,

Thank you for your help. I am new to Map Server...

I have:
PROJECTION
   "init=epsg:42304"
END

inside both my top-level MAP and LAYER definition.

I try Adding/Changing (Is this what your meant?) inside my
Layer
definition... All the points that as plotted before are now
gone.
PROJECTION  "init=epsg:4269" END

The proper location is still not plotted.
Something I am doing incorrectly?

Thank you so much for your help.
Toan

-----Original Message-----
From: Brent Fraser [mailto:bfraser at geoanalytic.com]
Sent: December 10, 2007 1:33 PM
To: Tran, Toan (MCYS); MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] Data Plotted at Wrong
Location

Toan,

  You haven't specified the coordinate system of the input
data so MapServer assumes it's the same as the coordinate
system for the
output map (LCC).

  Add a PROJECTION object to the csv file's LAYER
definition.  For example, if the input data in the csv file
is NAD83:

LAYER csv
PROJECTION
 "init=epsg:4269"
END
:

Brent Fraser
GeoAnalytic Inc.
Calgary, Alberta
----- Original Message ----- 
From: "Tran, Toan (MCYS)" <Toan.Tran at ONTARIO.CA>
To: <MAPSERVER-USERS at LISTS.UMN.EDU>
Sent: Monday, December 10, 2007 11:13 AM
Subject: [UMN_MAPSERVER-USERS] Data Plotted at Wrong
Location

Hi,
I wish to plot several points in Ontario, Canada, but the
problem is
that the points are plotted at the wrong location. My data
are in
decimal degree stored in a CSV file. But when the map was
draw, all the
points are plotted very closed together. I suspect that for
some reason,
the map-server is plotting the data as meter/or any other
unit instead
of degree decimal. I used this PROJECTION in both my
top-level MAP and
proper layer, with UNITS METERS: PROJECTION
"init=epsg:42304" END I
added this for the /usr/local/share/proj/epsg file because
it wasn't
there after I installed the Projection Library: <42304>
+proj=lcc
+lat_1=49 +lat_2=77 +lat_0=49 +lon_0=-95
+x_0=0 +y_0=0
+ellps=GRS80 +datum=NAD83 +units=m +no_defs no_defs <>
Is it enough to simple add the above epsg code???
Changing UNITS METERS to UNITS DD in my map file doesn't
help either.
Here are some sample DATA:
 <<img.GIF>>
Desc,,X,Y
"5",79.725833,43.715361
"6",81.000107,43.368512
"7",-78.347276,44.301459
"8",,81.332038,48.47381
"9",79.68955,43.4662
...
"AAAAAAAAAAAAAAAAAAAAAAaaaaaa19",0,200000
"AAAAAAAAAAAAAAAAAAAAAAaaaaaa20",0,220000
"AAAAAAAAAAAAAAAAAAAAAAaaaaaa21",0,240000
"AAAAAAAAAAAAAAAAAAAAAAaaaaaa30",0,300000
"AAAAAAAAAAAAAAAAAAAAAAaaaaaa31",10000,300000

This is what I see when I type ./mapserv -v
MapServer version 4.10.3 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG
OUTPUT=WBMP
OUTPUT=SVG SUPPORTS=PROJ SUPPORTS=FREETYPE
SUPPORTS=WMS_SERVER
SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT
SUPPORTS=WCS_SERVER SUPPORTS=THREADS INPUT=EPPL7 INPUT=OGR
INPUT=GDAL
INPUT=SHAPEFILE DEBUG=MSDEBUG Any help is much appreciated
Thanks Toan