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MythWeather README - 08/2006 Lucien Dunning email@example.com New Features =============== -New Screens: Current Conditions 3 day forecast 6 day forecast 18 hour forecast Severe Weather Alerts Generic animated image screen Generic static image screen -External programs used to grab data. -Which screens are displayed, and in what order, can be configured by the user. -Multiple instances of the same screen can be displayed, showing different locations or units. -Page change intervals now user configurable. -Data can be retrieved as long as frontend is running, there is no longer a wait for the initial data to be retrieved. -Adding your own screen can be as simple as editing an xml file. -Regular expression based location searching. -Screens can include multiple locations. -New configuration screens to make it all work. Requirements =============== Currently builds against version 0.21 of MythTV. nice is required, it is used to reduce the priority of the scripts which are run in the background. The plugin relies on external scripts to retrieve weather data. Currently they are all written in perl so a current version of that is required (I don't know how current, I have 5.8). Below are all of the external modules required, some are included with a default installation, others will need to be installed. Some distros will have them in their package management system, for those that aren't, see http://cpan.org/misc/cpan-faq.html#How_install_Perl_modules XML::Parser XML::SAX Carp SOAP::Lite Data::Dumper Date::Manip Getopt::Std LWP::Simple Exporter Image::Size Currently its all or nothing, if any are missing, ./configure will fail. Installation =============== MythWeather is now included as a part of the mythplugins packages, therefore, installation should be done at that level. If any of the above perl requirements are not met, the configure script will disable mythweather and print an error message, resolve missing dependencies and rerun the script to enable MythWeather. Setup =============== On all screens you press MENU to save changes and exit, or EXIT to cancel changes. Global Setup: This screen is pretty self explanatory. The two time values determine how long to display pages. The first is for normal operation. The second is how long to stay on a page after a manual page change. The checkbox determines whether data should be continually retrieved as long as the frontend is running. This will improve startup time of MythWeather drastically since it will no longer have to wait for the initial data retrieval. Enabling this does slow down the startup of mythfrontend slightly, but I have worked hard to minimize this. Screen Setup: This is probably the most important of the setup screens. The Screen Setup screen is where you decide what screens you want displayed, what units they will use, what location each screen displays, and in what order the screens are displayed. The interface should be pretty intuitive; most options will be found by pressing select on the screen you want to manipulate. Keep in mind that not all screens will ask for units since the nature of some sources doesn't allow them to change the units of the data. Also, a screen can be a single location screen or a multi-location screen. To change the location of a single location screen, you simply SELECT the screen in the active screens list and choose Change Location. To change the locations of a multi-location screen you have to set the location of each individual data item. This may not be ideal, but it does allow for very easy screen and source development, along with very customizable location setups. The location search screen searches the external sources that supply the data for the screen or data item you are configuring. How it searches depends on which sources it is looking at. Most of the sources (all of the ones I've written) use regular expressions to search. If you want to see all possible locations you can search with ".*" or just a blank search term. Once you have selected valid locations for all screens and data items that are active, you can press MENU to save and exit. Source Setup: This screen is where you configure the sources necessary to supply data to the screens chosen in the previous screen. Since it filters out the unused sources, it is wise to make sure you have completed the screen setup prior to entering this screen. This will ensure that you see the sources you want to. This screen is pretty self-explanatory. The first value is the timeout for retrieving data. When a external data retrieval program exceeds this value, it will be terminated. The second value is how long to wait between retrievals. Note that some scripts will cache data to avoid hammering sites that update their data at fixed times. Also, some scripts will report the update time as a value gathered from the server that signifies the time the data was generated or observed. Others will simply use the time they were last run. Therefore, if you see update times that seem further in the past than you think they should be, don't worry, chances are the scripts are running fine and you have the most current data available. Use =============== Once configured, using MythWeather requires little brain-power. When the plugin is started it will begin cycling through the screens. If you wish to pause on a screen press PAUSE (p). If you wish to manually move between pages, use the left and right arrows. If you wish to manually initiate an update, press 'u'. Thats about it, to exit, press EXIT (escape). All questions, ideas, and flamebait can be sent to me at firstname.lastname@example.org, receipt of email is no gurantee of reply (I'll try my best). I am also in #mythtv on freenode from time to time, my nick is lu.