[Mapserver-users] [mapserver]virtual spatial data

[Chip Hankley]

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Zak, et al,

I've had a chance to play with this some more.

I made a mistake in my earlier posts. The web server I was trying things
off of was a WinNT box, not Windows 2000. However, I have tried it on my
home box (a Windows 2000 machine) with the same results.

So, here's what I've tried.

1) *.ovf against a MS Access 2000 based database (System DSN)
2) *.ovf against a text based table - csv (System DSN)

In both cases, the following commands work:

ogrinfo -ro virtual.ovf
...returns:
INFO: Open of `virtual.ovf'
using driver `VRT' successful.
1: MyLayer (Point)

ogrinfo -ro virtual.ovf mylayer
...returns:
INFO: Open of `virtual.ovf'
using driver `VRT' successful.

Layer name: MyLayer
Geometry: Point
Feature Count: 25
Extent: (390873.700800, 5204448.446000)
Layer SRS WKT:
(unknown)
ID: Integer (10.0)
X: Real (0.0)
Y: Real (0.0)
OGRFeature(MyLayer):0
  ID (Integer) = 1
  X (Real) = 480578.0069
  Y (Real) = 5210762.762
  POINT (480578.007 5210762.762 0.000)
... and so on.

However, when I try to call it from MapServer, I get the following
error:
msDrawMap(): Image handling error. Failed to draw layer named
'MyVirtualLayer'. 
msOGRFileOpen(): OGR error. Open failed for OGR connection
`C:/inetpub/wwwroot/MapServer/PointTest/data/virtual.ovf'. File not
found or unsupported format. 

I'm attaching the following:

ogr.map (the mapfile)
virtual.ovf (virtual data file)
data.txt (the text table I'm trying to hit)

Again, this was tested on a Windows 2000 Professional OS, using an MS4.2
beta build I downloaded off of the MS site last week.

Hope that helps... let me know if there's any other test I can run.

Chip

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ID,X,Y
1,480578.0069,5210762.762
2,406471.8975,5231732.188
3,421949.7605,5309334.259
4,486205.6383,5206175.655
5,418918.5465,5208542.54
6,418517.3127,5215273.744
7,431802.8372,5303975.903
8,457458.8175,5301521.854
9,458852.7883,5235005.156
10,429417.4341,5228201.624
11,457737.4239,5222193.938
12,481929.8764,5280190.575
13,497773.6159,5235507.038
14,430836.9841,5293155.729
15,458001.5022,5221597.725
16,407386.5516,5300599.051
17,390873.7008,5210050.156
18,443150.2801,5204448.446
19,492146.379,5236810.172
20,484023.9341,5209345.238
21,485224.6403,5268335.217
22,455537.428,5268990.1
23,400637.86,5232282.698
24,475053.1434,5303022.021
25,424775.2919,5205557.469

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