ncdf plugin for reading NetCDF tidal currents

[Rasbats]

Gilletarom
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Join Date: Mar 2010
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Re: oGrib2 Plugin using the ECMWF grib_api
Quote:
Originally Posted by Rasbats
Further Update ...
.....
A Windows compiled version of ncdf_pi has been left in the Extras folder, with an example tidal current nc file.
https://github.com/Rasbats/ncdf_pi
Mike

I placed ncdf_pi.dll in folder plugins, with the other dll.

Then, I run O (4.2.0, Or 4.2.1)
Then "options" and then "Plugins" but immediatly, Crash.
Today, 14:59 #19 Rasbats
Registered User


Join Date: May 2012
Posts: 208


Re: oGrib2 Plugin using the ECMWF grib_api
Gilletarom,

Strange. I have tested on two other machines and each opened the plugin without a problem.

Do you still have NetCDF 4.4.0 installed?

I have taken this post and started another thread for netcdf.

Mike
Attached Thumbnails

[Gilletarom]

Originally Posted by Rasbats

Gilletarom,

Strange. I have tested on two other machines and each opened the plugin without a problem.

Do you still have NetCDF 4.4.0 installed?

I have taken this post and started another thread for netcdf.

Mike

Yes, NetCDF 4.4.0 is installed. I have just put out the previous "grib2.dll file" But ... I cleaned the PC with CCleaner after put out the previous dll .... ????

[Rasbats]

Just a thought ...

Do you still have "C:\Program Files\netCDF 4.4.0\bin" in your PATH?

Did CCleaner remove it?

Mike

[rgleason]

Mike,
I have tried building the plugin and seem to be able to build it for Debug,
but not Release. Please see the attached.

Then I tried the ncdf_pi.dll and my version of Opencpn would not start any and had some errors. I took then deleted the dll and my version of opencpn 4.2 still would not start, so perhaps something else has changed.... but I am certain I have iconv.dll in the main directorty.

More later. Later: Built and updated Opencpn v4.2 and installed, now no longer have those errors and the program starts.

[rgleason]

The ncdf_pi.dll plugin is installed, and I have the 4 dlls in the main directory.(no thats for survey!)
I wonder what is missing. Have path to the bin for netcdf

ocpencpn.log

9:55:26 PM: PlugInManager searching for PlugIns in location C:\Program Files (x86)\OpenCPN 4.2.0\plugins
9:55:26 PM: PlugInManager: Loading PlugIn: C:\Program Files (x86)\OpenCPN 4.2.0\plugins\ncdf_pi.dll
9:55:26 PM: Error: Failed to load shared library 'C:\Program Files (x86)\OpenCPN 4.2.0\plugins\ncdf_pi.dll' (error 126: the specified module could not be found.)
9:55:26 PM: PlugInManager: Cannot load library: C:\Program Files (x86)\OpenCPN 4.2.0\plugins\ncdf_pi.dll

10:15:38 PM: PlugInManager: Loading PlugIn: C:\Program Files (x86)\OpenCPN 4.2.0\plugins\ncdf_pi.dll
10:15:38 PM: Error: Failed to load shared library 'C:\Program Files (x86)\OpenCPN 4.2.0\plugins\ncdf_pi.dll' (error 126: the specified module could not be found.)
10:15:38 PM: PlugInManager: Cannot load library: C:\Program Files (x86)\OpenCPN 4.2.0\plugins\ncdf_pi.dll
10:15:38 PM: PlugInManager: Loading PlugIn: C:\Program Files (x86)\OpenCPN 4.2.0\plugins\nmeaconverter_pi.dll

[Gilletarom]

Hello Mike,

Originally Posted by Rasbats

Just a thought ...

Do you still have "C:\Program Files\netCDF 4.4.0\bin" in your PATH?

Did CCleaner remove it?

Mike

No problem with the "path". It is always present.

[Rasbats]

Rick,

From your attached doc it looks like the link to opencpn.lib is not working.

Could you try putting both ocpn_plugin.h and opencpn.lib (from O4.2) in your build directory and recompiling. For release you need to make the same changes to 'properties' as you did for debug. The 'properties' in VS2013 do not carry over from 'debug' to 'release'.

Rick, Gilletarom,

I have just downloaded a zip of ncdf_pi from GitHub onto a fairly clean XP machine. Unzipped and installed NetCDF from the Extras folder (add to PATH for all users). Installed OpenCPN 4.2 (only 3.2.2 previously on this pc). Copied ncdf.dll from Extras into the plugins folder. Started O and enabled ncdf. It worked (had to switch OpenGL off).

Rick ... if you could try this route with using the pre-compiled ncdf_pi it could confirm/deny whether I am going totally crazy.

Any Win user ... Would appreciate another test of just using the pre-compiled plugin with OpenCPN 4.2. There is an example of a tidal current netcdf (nc) file in the Extras folder to use with the plugin.

My development pc and tablet are Win 8.1, where the plugin worked. Is Win 10 the problem?

Mike

[rgleason]

Installed the ncdf.dll attached to your email.
Then installed netcdf 4.4.0.exe in the Extras folder.
Checked the Control Panel > System > Advanced and found Path and checked to see if the path shows

C:/Program Files (x86)/netCDF 4.4.0/bin/

Then the plugin dll when installed under the plugins directory of Opencpn 4.2
works fine.

[rgleason]

Mike,
Ok it builds and you can the one I built....
- Now I found the problem!
The plugin window does not open up big enough to expose the Current checkbox!
Also I have not used this plugin enough to know that it is there!
Can you make the Preferences window that pops up be bigger to show the checkboxes?
Or perhaps have both checkboxes checked to begin with, when the plugin is first started?
That would help a lot.

I can display
ibi_example.nc 000m Forecast thru 660 m Forecast
ibi_test.nc 000m Forecast thru 660 m Forecast
ibi,nc 000m Forecast thru 1440 m Forecast

Thanks. I believe the build instructions in ncdf4.txt for setting up VC++ are now correct.
Best
Rick

[Rasbats]

Rick,

Github has been updated. Checkbox for current is ticked by default. Position moved.

I cannot make the display of the area downloaded totally flexible. Following a suggestion by Gilletarom I am now looking at defining areas ... English Channel, Irish Sea, South Brittany etc etc. If you have selected an area from Copernicus that includes that region it will display. I do not want to make the areas too large because of the size of the download.

Must make it work on OpenGL!!! Forward/Back buttons. Anything else?

Mike

[rgleason]

Mike, I think defining areas is a good idea.
I wonder if there is a way of reducing the display of all arrows at larger scales?
Perhaps just an option to display only every other or every 3rd grib arrow, perhaps associated with the scale? This would help with the density of the the display and redraw time. It would also help with when the "force" is checked. Just an idea.

[rgleason]

Mike,
Attached is your most current version of ncdf.dll along with updated notes for creating the dll using VC++. Also attached are some images of the current files, for others to see what this plugin is doing.

Thanks creating this plugin, it will be especially helpful to European Cruisers because the current files are of that area, I guess.

This is beta. Take the pdf off the ncdf.dll and place it in your 4.2.0 or 4.2.1 Opencpn plugin directory. Then point the plugin to some downloaded current files. I'll make a Ncdf gb2 directory in File Thingie for current files for testers to try.

[rgleason]

Mike

Your script motu-client-script.txt shows this:

"C:\Python27/python" "C:\plugins\motu-client/motu-client.py" -u XXXXXXXXXXXX -p XXXXXXXXXX -m http://puertos.cesga.es/mis-gateway-servlet/Motu -s http://purl.org/myocean/ontology/ind..._005_001_b-TDS -d dataset-ibi-analysis-forecast-phys-005-001-hourly -x -4 -X 0 -y 49 -Y 52 -t "2016-03-08 12:00:00" -T "2016-03-09 12:00:00" -v v -v u -o "C:\plugins\cdo" -f "ibi.nc"

I have python27 on the PC and would like to make a script that fits with my setup which I could start with Launcher_pi (adding another operation) as I have done with three VDR_player files.

Can you explain what the paths are ?
First path: goes to python
Second path: location of another script in py ?
Then it looks like you are combining two http: sources into one file
located somewhere "C:\plugins\cdo" with the name ibi.nc

Currently I am putting a single line of python script into Launcher in order to play the VDR files. How would you suggest I set this up?

[Rasbats]

Rick,

If you go to the Copernicus site, login and make a download you will get a screen telling you about the motu client at the end of the process.

There is a link to a site for downloading this motu-client script.

"C:\plugins\cdo" -f "ibi.nc" is where my download is saved and the file name.

"C:\Python27/python" "C:\plugins\motu-client/motu-client.py" is the folder for Python and the folder containing the motu-client script.

Mike

[rgleason]

Ok so I could save motu-client-script.txt as motu-client-script.py straight into my python27 directory, then modify the paths accordingly.

"C:\Python27/python" "C:\Python27\python\motu-client.py" -u XXXXXXXXXXXX -p XXXXXXXXXX -m http://puertos.cesga.es/mis-gateway-servlet/Motu -s http://purl.org/myocean/ontology/ind..._005_001_b-TDS -d dataset-ibi-analysis-forecast-phys-005-001-hourly -x -4 -X 0 -y 49 -Y 52 -t "2016-03-08 12:00:00" -T "2016-03-09 12:00:00" -v v -v u -o "D:\grib\cdo" -f "ibi.nc"

Python Directory: C:\Python27/python
Script Location: C:\Python27\python\motu-client.py
Download Location: D:\grib\cdo
Filename Assigned to the concatenated files: ibi.nc

I'll check the Copernicus site for more details. Thanks