Add Environment Canada weather grabber for Canadian locations

[anonymous]

This is an enhancement to MythWeather in the form of a new grabber script. This script allows MythWeather to report on Canadian cities. Data is retrieved from Environment Canada (​http://www.weatheroffice.gc.ca/).

The enhancement includes the following files:

envcan.pl
ENVCAN-Stations.xml
ENVCANParser.pm
ENVCANLocation.pm
ENVCAN_icons

All files should be copied into the <prefix>/share/mythtv/mythweather/scripts directory.

envcan.pl MUST be marked as executable. It is the script called to actually download the weather data. There are notes for each file included in the PERL comments.

The code is by no means perfect, but it does work. Comments on improving it are welcome.

Thanks!

-- Joe Ripley vitaminjoe@…

[vitaminjoe@…]

Maps Enviroment Canada icons to MythWeather icons

[vitaminjoe@…]

Describes all Enviroment Canada locations and URLs to the data

[vitaminjoe@…]

PERL module used to search the XML document

[vitaminjoe@…]

PERL module used to parse HTML data. Requires HTML::Parser module.

[vitaminjoe@…]

PERL script that downloads Environment Canada data. MUST be marked executable.

[vitaminjoe@…]

Forgot to mention that this grabber provides data for the following screens:

Current Conditions 3 Day Forecast 6 Day Forecast

I'm working on an animated maps script that will use Environment Canada's animated radar and satellite maps as well.

-- Joe Ripley vitaminjoe@…

[vitaminjoe@…]

Environment Canada satellite map XML database (animated and static)

[vitaminjoe@…]

PERL module used to search the ENVCAN-Maps.xml file

[vitaminjoe@…]

PERL script used to grab data for Environment Canada animated satellite images

[vitaminjoe@…]

Just added a few more files that provides access to the animated satellite imagery provided by Environment Canada. The 'envcan_animaps.pl' file MUST be marked as executable.

All files must be copied to the <prefix>/share/mythtv/mythweather/scripts directory. After that, all animated satellite images available at ​http://www.weatheroffice.gc.ca/satellite/ can be used in MythWeather.

The scripts work for me, and I've tested a few different animated images. Please advise if you encounter bugs or have suggestions for improvements.

Thanks!

-- Joe Ripley vitaminjoe@…

[Joe Ripley <vitaminjoe@…>]

New version of envcan.pl. Adds caching support. Must be marked executable.

[Joe Ripley <vitaminjoe@…>]

Added a new version of envcan.pl. This version caches the weather data received from Environment Canada using the same Data::Dumper method that Lucien's scripts use. The data is cached for 15 minutes.

-- Joe Ripley vitaminjoe@…

[Joe Ripley <vitaminjoe@…>]

Add wind gust data from Environment Canada. Fix kph to mph conversion. Apply to envcan.2.pl.

[Joe Ripley <vitaminjoe@…>]

Add wind gust speed parsing.

[Joe Ripley <vitaminjoe@…>]

Ignore envcan.2.pl.patch... bad conversion logic. This is the latest copy of envcan.pl. Adds correct wind gust speed and SI/ENG conversions.

[stuartm]

Could you use "svn add" to add the files to your local checkout, then use "svn diff" to get a single patch containing all the new files and changes? It makes it easier to review and apply.

Looking at the number of files being added here and those for the UK grabber I'm writing, I think I'll make a change to the code so that we can group scripts and their support files into subdirectories e.g. scripts/envcan/, scripts/bbc/, scripts/nws/.

[Joe Ripley <vitaminjoe@…>]

Patch to include Environment Canada grabber as produced by 'svn diff'.

[Joe Ripley <vitaminjoe@…>]

No problem. I've added the files and generated the diff. The patch (envcan.patch) includes the latest versions of the Environment Canada grabber and all its related files. envcan.pl and envcan_animaps.pl must be marked as executable.

I agree that we'll need some form of script organization to prevent the jumble of multiple grabbers.

-- Joe Ripley vitaminjoe@…

[Joe Ripley <vitaminjoe@…>]

Did some checking on the legality of using Environment Canada as a data source. Looks like it should be OK. I'm not a lawyer, but as far as I can tell from the website, MythTV usage should fall into the 'Non-commercial reproduction' of the weather data.

More at: ​http://www.ec.gc.ca/copy_e.html

-- Joe Ripley vitaminjoe@…

[stuartm]

(In [14436]) Adds a mythweather grabber for Canada using the Environment Canada website.

Patch by Joe Ripley

Closes #3811

[stuartm]

(In [14437]) Set the svn:executable property on the two new grabbers.

Refs #3811 and #3722

[Joe Ripley <vitaminjoe@…>]

Patch to include Animated Maps grabber for Environment Canada. This file was missed in the previous envcan.patch.

[Joe Ripley <vitaminjoe@…>]

Stuart,

I missed a file in my previous patch... sorry about that.

I've attached the file as a patch. Please include it with your MythWeather updates as well. It allows users to download animated satellite images from Environment Canada. As with the other grabbers, it must be marked executable.

Thanks!

-- Joe Ripley vitaminjoe@…

[stuartm]

(In [14441]) Adds animated map grabber for the Environment Canada data source.

Closes #3811 and refs #3722