WeatherFax ...

[rgleason]

MSVC++ OUTPUT
for Weatherfax_pi. It does not compile anymore using new code.

FaxDecoder.cpp
        21>..\..\..\plugins\weatherfax_pi\src\FaxDecoder.cpp(454):         error C4430: missing type specifier - int assumed. Note: C++         does not support default-int
        21>..\..\..\plugins\weatherfax_pi\src\FaxDecoder.cpp(454):         error C2143: syntax error : missing ',' before '*'
        21>..\..\..\plugins\weatherfax_pi\src\FaxDecoder.cpp(458):         error C2065: 'userData' : undeclared identifier
        21>..\..\..\plugins\weatherfax_pi\src\FaxDecoder.cpp(459):         error C2065: 'Pa_mutex' : undeclared identifier
        21>..\..\..\plugins\weatherfax_pi\src\FaxDecoder.cpp(459):         error C2228: left of '.TryLock' must have class/struct/union
        21>          type is ''unknown-type''
        21>..\..\..\plugins\weatherfax_pi\src\FaxDecoder.cpp(460):         error C2065: 'Pa_havedata' : undeclared identifier
        21>..\..\..\plugins\weatherfax_pi\src\FaxDecoder.cpp(464):         error C2065: 'Pa_havedata' : undeclared identifier
        21>..\..\..\plugins\weatherfax_pi\src\FaxDecoder.cpp(465):         error C2065: 'Pa_mutex' : undeclared identifier
        21>..\..\..\plugins\weatherfax_pi\src\FaxDecoder.cpp(465):         error C2228: left of '.Unlock' must have class/struct/union
        21>          type is ''unknown-type''
        21>  WeatherFaxImage.cpp ......
        21>..\..\..\plugins\weatherfax_pi\src\WeatherFaxImage.cpp(373):         error C3861: 'isnan': identifier not found
        21>..\..\..\plugins\weatherfax_pi\src\WeatherFaxImage.cpp(373):         error C3861: 'isnan': identifier not found
        21>..\..\..\plugins\weatherfax_pi\src\WeatherFaxImage.cpp(391):         error C3861: 'isnan': identifier not found
        21>..\..\..\plugins\weatherfax_pi\src\WeatherFaxImage.cpp(391):         error C3861: 'isnan': identifier not found
        
        21>  wximgkap.cpp
        21>..\..\..\plugins\weatherfax_pi\src\wximgkap.cpp(272):         error C2668: 'sqrt' : ambiguous call to overloaded function
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(589): could be 'long double sqrt(long         double)'
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(541): or       'float sqrt(float)'
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(127): or       'double sqrt(double)'
        21>          while trying to match the argument list '(int)'
        21>..\..\..\plugins\weatherfax_pi\src\wximgkap.cpp(356):         error C2668: 'sqrt' : ambiguous call to overloaded function
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(589): could be 'long double sqrt(long         double)'
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(541): or       'float sqrt(float)'
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(127): or       'double sqrt(double)'
        21>          while trying to match the argument list         '(int32_t)'
        21>..\..\..\plugins\weatherfax_pi\src\wximgkap.cpp(365):         error C2668: 'sqrt' : ambiguous call to overloaded function
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(589): could be 'long double sqrt(long         double)'
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(541): or       'float sqrt(float)'
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(127): or       'double sqrt(double)'
        21>          while trying to match the argument list         '(int32_t)'
        21>..\..\..\plugins\weatherfax_pi\src\wximgkap.cpp(425):         error C2668: 'sqrt' : ambiguous call to overloaded function
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(589): could be 'long double sqrt(long         double)'
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(541): or       'float sqrt(float)'
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(127): or       'double sqrt(double)'
        21>          while trying to match the argument list '(int)'
        21>..\..\..\plugins\weatherfax_pi\src\wximgkap.cpp(426):         error C2668: 'sqrt' : ambiguous call to overloaded function
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(589): could be 'long double sqrt(long         double)'
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(541): or       'float sqrt(float)'
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(127): or       'double sqrt(double)'
        21>          while trying to match the argument list '(int)'
        21>..\..\..\plugins\weatherfax_pi\src\wximgkap.cpp(427):         error C2668: 'sqrt' : ambiguous call to overloaded function
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(589): could be 'long double sqrt(long         double)'
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(541): or       'float sqrt(float)'
        21>          c:\Program Files (x86)\Microsoft Visual Studio         10.0\VC\include\math.h(127): or       'double sqrt(double)'
        21>          while trying to match the argument list '(int)'
        21>..\..\..\plugins\weatherfax_pi\src\wximgkap.cpp(812):         error C3861: 'log2': identifier not found

[rgleason]

I ran into Opensource Pyton Weather tools called "Scitools Iris" which looked interesting.
A powerful, easy to use, and community-driven Python library for analysing and visualising meteorological and oceanographic data sets.

Iris documentation homepage — Iris 1.6.0-dev documentation
Installing Iris — Iris 1.6.0-dev documentation
https://github.com/SciTools/iris

Perhaps it can be useful for us sometime.

[LeaseOnLife]

Originally Posted by Littlechay

I find the satellite images really useful on ocean passages. At least in the higher latitudes you can see the positions of fronts, and confirm the weather patterns shown on the GRIBS. The height of the cloud tops can be measured (on the IR images by measuring temperature); this along with physical area, barometric pressure etc. can give you a good insight into whether or not the GRIBs are telling the truth. Big thunder storms are also pretty easy to spot.

Yes, agreed. I attach a sample image here, maybe someone can teach me how to use the new 'conical', or any other projection to get this image calibrated via OpenCPN/weatherfax plugin.

I believe, the wav files from wxtoimg have some data encoded into them, so wxtoimg knows which satellite at what time this wav is from. I say this, because one can use wav files fom other people and wxtoimg is able to draw a map over the image by using Keppler data for the satellite.

The audio for a good satellite pass often is 12-14Mbyte, can't upload it here. I uploaded the wav file here:

http://www.filedropper.com/02021005wav

When you open this audio file in wxtoimg, and initiate 'decode', you should get several images, including the one attached to this post.

Dirk

[rgleason]

http://www.cruisersforum.com/forums/...ml#post1468165

[seandepagnier]

Originally Posted by LeaseOnLife

Yes, agreed. I attach a sample image here, maybe someone can teach me how to use the new 'conical', or any other projection to get this image calibrated via OpenCPN/weatherfax plugin.

I believe, the wav files from wxtoimg have some data encoded into them, so wxtoimg knows which satellite at what time this wav is from. I say this, because one can use wav files fom other people and wxtoimg is able to draw a map over the image by using Keppler data for the satellite.

The audio for a good satellite pass often is 12-14Mbyte, can't upload it here. I uploaded the wav file here:

Free File Hosting - Online Storage; Upload Mp3, Videos, Music. Backup Files

When you open this audio file in wxtoimg, and initiate 'decode', you should get several images, including the one attached to this post.

Dirk

How are you receiving the satellite data? What hardware setup?

Perhaps integration with wxtoimg can be possible in the future.. currently I am working on supporting noaa images from http ftp and email, but I won't have much for a few weeks or more.

[LeaseOnLife]

Originally Posted by boat_alexandra

How are you receiving the satellite data? What hardware setup?

Perhaps integration with wxtoimg can be possible in the future.. currently I am working on supporting noaa images from http ftp and email, but I won't have much for a few weeks or more.

I bought a dedicated receiver (WRAASE APT-06) and built a simple crossed dipole per Der "GL-Dipol" This only needs wxtoimg and the receiver.

Results with above setup are good.

I tried to do the same using a simple DVB dongle, with the same antenna as above. So far I have barely heard a satellite with this combination, I am far from receiving a picture. Tool chain I am using for this: Orbitron (satellite tracking) ==> DDE interface to SDR sharp ==> SDR sharp for receiving ==> virtual audio cable ==> wxtoimg. With the satellite overhaed I can barely hear the satellite. The dedicated receiver is so much better and receives clear signals when satellite is just a few degrees over the horizon.

Dirk

[rgleason]

The audio for a good satellite pass often is 12-14Mbyte, can't upload it here. I uploaded the wav file here:

Free File Hosting - Online Storage; Upload Mp3, Videos, Music. Backup Files

This link takes me to the filedropper main page, can't get the file. Any thoughts? Thanks.

[LeaseOnLife]

Originally Posted by rgleason

This link takes me to the filedropper main page, can't get the file. Any thoughts? Thanks.

Rick

not sure what happened, filedropper says they keep a file for min 30 days.

I uploaded another wave file to my google-drive, try this:

https://drive.google.com/file/d/0B1c...it?usp=sharing

wxtoimg should decode this to several pics, one should look like the one attached.

Dirk

[rgleason]

Thanks Dirk, it worked. Big file 13mb. I'm trying to get some files that can be used for testing weatherfax, but it would be much better to be able to do it with the equipment..

[rgleason]

I've uploaded Dirk's file to Opencpn Beta File Thingie, under Wx-sound, it is 13mb. I can play this file with Windows Media and I hear the sound. I tried opening the file using Weatherfax_pi and the attached is what I got. I tried the mercator, polar, conic selections. Am I doing something wrong? There does not appear to be an image, any help would be appreciated. Dirk do you get an image?

Thanks

[rgleason]

Why does it say "Rotate Image" when I use png? Now it is doing the same with Jpeg.
This is screwy!!!!

Anyway the file looks like black and white lines with no image. I hope these png and jpg show properly to others!

[LeaseOnLife]

Originally Posted by rgleason

Why does it say "Rotate Image" when I use png? Now it is doing the same with Jpeg.
This is screwy!!!!
!

Must be a CF thing, I have the same issues...

[LeaseOnLife]

Originally Posted by rgleason

I've uploaded Dirk's file to Opencpn Beta File Thingie, under Wx-sound, it is 13mb. I can play this file with Windows Media and I hear the sound. I tried opening the file using Weatherfax_pi and the attached is what I got. I tried the mercator, polar, conic selections. Am I doing something wrong? There does not appear to be an image, any help would be appreciated. Dirk do you get an image?

Thanks

The satellite wx wav files need a different decoding algorythm than the HF-wx wav files.

For now, try wxtoimg or jvcomm32 to convert wav to bmp/jpg

It would be interesting if you can 'calibrate' the resulting picture to show in opencpn

Dirk

Edit: here is a longer list of programs capable converting sat-wx sound to pics:
http://www.geo-web.org.uk/soft.php

[rgleason]

Too many issues, issues with showing screenshots and issues with loading WAV in Weatherfax.

Dirk do you get white and black lines when you load your 13mb file
02150945.wav? Is this correct? I thought it would be an image? Have tried polar, conic, mercator, etc. (I have uploaded this file to Opencpn Beta File Thingie WX-Sound if anyone wants to test it.)

[rgleason]

The satellite wx wav files need a different decoding algorythm than the HF-wx wav files.
For now, try wxtoimg or jvcomm32 to convert wav to bmp/jpg
It would be interesting if you can 'calibrate' the resulting picture to show in opencpn

Got it! Ok I will try wxtoimg next.