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  1. paddle_master

    Applications with wind estimation

    Yep, it was Samsung text to speech issue. It failed because I uninstalled ChatOn. And ChatOn I needed to uninstall because my online banking app was not able to coexist with that. When software could just work... But after some tricks I set Google TTS as default TTS and your app stopped crashing. Thanks for the reference. I will take a look on it. Thanks for your opinion. It was a pleasure to read it, especially the last paragraph about my marketing skills. For an IT geek like me it is a compliment. Guys, its not about the decision, whether I am going to tackle that challenge or not. I have already agreed. The idea comes from a big company which supports me with huge amount of sailing tracks and polars for a wide range of boat classes. For me as a student it is a great intellectual exercise and exciting topic for my master thesis, probably the most exciting one in the whole university. Thats why you have no chance to stop me from my goal! But you have the option to help me to get through through the most boring topic of my master thesis and become mentioned in my acknowledgments! If you are using apps like RaceQs, TackTastic, TheFastTrack, iRegatta, Sailware, Sailtracker, StartLine or any other app with wind estimation or maneuver classification functionality without wind instruments, I would really appreciate your feedback about that apps regarding the points mentioned in my first post. Best regards, paddle_master
  2. paddle_master

    Applications with wind estimation

    Thanks for the reference. I have downloaded the app. But as soon as I press "Start" or "Race", the app crashes on my Samsung Galaxy Note 4. I will evaluate multiple approaches for wind estimation. Among them neural networks and graph modelling with costs assigned to each edge. There multiple characteristics which may be extracted from GPS and polars. From GPS track it is possible to recognize maneuvers. I am able to analyse maneuvers considering different correlations which I have already collected from data mining. For instance: speed change during jibes is less than during tacks. Polars may give a clue about optimal tacking angles and speed ratio between sailing upwind and downwind. It is not possible to sail against true wind without slowing down. All that information may be aggregated for estimation of true wind angle. With some curve fitting of actual and target polar chart it is possible to guess at least some wind speed just as reference. The solution I am developing is not supposed to replace any wind measurement systems with high accuracy. Instead it should be used for race analysis to produce a default wind information for cases where no wind tracking has been made. Until now Raceqs is the best example for that I got. Best reagards, paddle_master
  3. paddle_master

    Applications with wind estimation

    Dear sailors, The world of computer science needs your help! Within the framework of my master thesis I am developing a solution for wind estimation. The solution will use GPS track and boat’s polars as input in order to determine the direction and speed of the wind. Right now I am conducting a market analysis for existing solutions with similar context. Do you use any application software (smartphone apps, web apps, pc/mac software) with wind estimation functionality? Such software may guess maneuver types like tacks/jibes and give feedback about your sailing performance without the need for wind measurement instruments and manual wind data input. It would already help me if you just right the name of the application you are using. Any additional feedback about the application usage will be much appreciated. I am specifically interested in the following questions: · How accurate is the estimation? · What do you have to do/how do you have to sail to receive a correct estimation? (e.g. perform specific maneuvers or sail in 3-4 different points of sail) · What kind of data is estimated? (e.g. wind speed and direction, sea state, wind gusts, estimation confidence, change of wind direction and wind speed) · How does the application react on wind changes? · What does the application show if it doesn’t have enough data collected to make a confident wind estimation, for example when the application is starting to record your track? · What is the main purpose of the app? Do not hesitate if you want share any further experience and impressions. Feel also free to ignore the questions above and leave a feedback in free style Cheers paddle_master