Re: [Openev-discuss] Help with S-75 (enc) files from NOAA

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David, Frank,

Maybe just zoom in into the green spot will
do the trick!

Frank, I don't think gvtest is in the openev distro
but I could add, to testmain.c, this code right before
the code that load all layers:

    m_covrLayer = OGR_DS_GetLayerByName(hDS,
"M_COVR");
    if (NULL == m_covrLayer)
        printf("WARNING: no M_COVR layer, cell extend
will have to be guessed ...\n");
    else
        _loadLayer(view, m_covrLayer, drvName,
filename);

I have experiment a bit with this here and it seem to
work.
The problem is that NOAA cells don't have a
CATALOG.031
to pull extend from.

Loading the coverage object first will set the extend 
of this object for OpenEV view.

The problem is that there could be more then one
M_COVR
in a cell. Also I'm not certain its mandatory object.

I checked both US4MN11M.000 and US4MN21M.000
and the M_COVR is there (I can see the western part
of lake Superior at startup.)

Note that this patch work only for gvtest. Could get
a bit ugly to fudge that at the python level. Because
extend are probably allready handled if we have been
loading from the catalog.031 (not sure) also this
would add a per driver loading sequence.

Hope this help,

Sylvain.

--- David Herring <dhe...@mo...> wrote:
> My thanks in advance for any help:
> 
> I'm having problems viewing some s-57 files I've
> downloaded from NOAA
> using the OpenEV_FW package
> (OpenEV_FW_linux_1.7.2.tar.gz). Has anyone
> had success viewing nautical charts from NOAA with
> openev. If so did you
> use any specific setup, and can you offer any
> general advice.
> 
> Here's what I'm doing. After downloading
> s57attributes.csv 
> s57expectedinput.csv  s57objectclasses.csv I set the
> environment
> variable S57_CSV to the directory which includes
> these files and start
> up openev. I then attempt to open US4MN11M.000, a
> nautical chart of a
> portion of lake superior from NOAA. 
> 
> When I open the file I notice stdout (stderr?) gets
> a line saying the
> file is not a supported format. However no such
> complaint appears in the
> application and the file seems to partially load
> since after reading the
> file and complaining to stdout or stderr I see a
> dialog box titled
> vector layer selection. I see stuff like 'achare'
> and 'coalne' in this
> dialog box. I find these keys in
> s57objectclasses.csv (anchor area,
> coastline) so it seems like I might be on the right
> track. 
> 
> At this point I select 'load all' and only see a
> light green region on a
> darker green background. I notice as I move the
> cursor over this area I
> do see latitude and longitude displayed in the
> status line at the bottom
> of the application. The lat. lon. values seem
> correct for the region I'm
> attempting to view, but I see no other details from
> the chart.
> 
> I'm a software engineer and wouldn't mind doing some
> more exotic
> tweaking, and/or debugging to get this going. I'm
> just not sure where to
> start.
> 
> Here are some possibly relevant details:
> 
> [dherring@victoria csv_files]$ uname -a
> Linux victoria 2.6.5-1.358 #1 Sat May 8 09:04:50 EDT
> 2004 i686 i686 i386
> GNU/Linux
> 
> I'm using gnome on fedora core 2.
> 
> Here's the complete console output:
> 
> [dherring@victoria csv_files]$
> ~/downloads/OpenEV_FW/bin/openev 
> Default software rendering mode (use -h if
> accelerated video card
> installed).
> 
> Gdk-WARNING **: Missing charsets in FontSet creation
> 
> 
> Gdk-WARNING **:     JISX0208.1983-0
> 
> 
> Gdk-WARNING **:     KSC5601.1987-0
> 
> 
> Gdk-WARNING **:     GB2312.1980-0
> 
> 
> Gdk-WARNING **:     JISX0201.1976-0
> 
> Loading tools from
>
/home/dherring/downloads/OpenEV_FW/bin/../tools/rendertest.py
> Loading tools from
>
/home/dherring/downloads/OpenEV_FW/bin/../tools/mil_symbols.py
> Loading tools from
>
/home/dherring/downloads/OpenEV_FW/bin/../tools/gvrastertools.py
> Loading tools from
>
/home/dherring/downloads/OpenEV_FW/bin/../tools/open_raw.py
> Loading tools from
>
/home/dherring/downloads/OpenEV_FW/bin/../tools/Tool_Export.py
> Loading tools from
>
/home/dherring/downloads/OpenEV_FW/bin/../tools/Tool_ShapesGrid.py
> Loading tools from
>
/home/dherring/downloads/OpenEV_FW/bin/../tools/compose.py
> Loading tools from
>
/home/dherring/downloads/OpenEV_FW/bin/../tools/calculator.py
> Loading tools from
>
/home/dherring/downloads/OpenEV_FW/bin/../tools/imgproctemplate.py
> ERROR 4:
>
`/home/dherring/projects/boatthing/ENC_ROOT/US4MN11M/US4MN11M.000'
> not
> recognised as a supported file format.
> 
> 
> Traceback (most recent call last):
>   File
>
"/home/dherring/downloads/OpenEV_FW/lib/python2.2/site-packages/gtk.py",
> line 117, in __call__
>     def __call__(self, *args):
> KeyboardInterrupt
> 
> 
> [dherring@victoria csv_files]$ ls $S57_CSV 
> s57attributes.csv  s57expectedinput.csv 
> s57objectclasses.csv
> [dherring@victoria csv_files]$ 
> 
> 
> 
>
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