#osm-ru | Logs for 2014-05-27

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[02:14:00] <putnik> У порталов открытых данных что с лицензией?
[02:14:48] <putnik> ОД или не ОД? Есть какие-то постановления на этот счёт?
[02:26:58] <putnik> Похоже, что всё печально. Лучший текст условий у питерцев: http://data.gov.spb.ru/lic/?
[02:38:33] <putnik> Ёшкин кот! Я правильно понимаю, что ни attribution (как у питерцев), ни CC-BY всё равно не позволяют вносить данные в ОСМ? Что вообще выбивать из людей, чтобы от этого прок был?
[02:45:52] <andrewsh> CC-BY по идее проблемой быть не должно
[02:45:58] <andrewsh> или должно?
[02:46:01] <andrewsh> хотя
[02:46:09] <andrewsh> надо читать текст ODbL
[02:46:19] <andrewsh> вроде оно как раз насчёт attribution заморачивается
[03:05:46] <putnik> Откуда у госструктур вообще мода пошла на требование указывать источник?
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[03:28:59] <Robert> hello
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[03:31:08] <Robert> hello how could I get a CGI for Windows?
[03:33:39] <Robert> anyone know Spanish here?
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[09:30:18] <psha[work]> господа, а кто-нибудь с mapbox дело имел?
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[12:32:09] <Hind> Ну что, котаны?
[12:32:30] <Hind> Слабо написать браузерный векторный рендеринг в реалтайме a la гугл?
[12:33:08] <Hind> котярины векторные тайлы, в принципе, неплохи, но сама рендерилка работала медленно, ибо не акселератед
[12:35:51] <freeExec> а гу.. написал?
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[12:38:01] <Hind> Написал. У него же 3D-домики давно
[12:38:05] <Hind> и векторная карта
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[12:38:21] <Hind> Если машина позволяет, конечно
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[12:57:27] <Runge> Hind: а мне вот гугловская векторая карта вообще не нравится. выбор их понятен, а вот сама реализация картографических задач оставляет желать лучшего
[12:58:22] <Hind> Runge: мне кажется, в реалтайме с дробными зумами считать положение надписей по сложным алгоритмам — дьявольски сложная задача
[12:58:45] <Hind> Общий принцип решения понятен — максимум информации готовить заранее
[13:00:26] <Runge> да я уже про сложную реализацию молчу. у них даже в упрощенном варианте алгоритма не показываются, например, города, которые куда важнее прилегающих к ним деревень, которые выводятся на тех зумах где не должны быть.
[13:00:54] <Runge> но положение надписей с задачей максимизацией вполне себе реализуема на GPU
[13:02:13] <Runge> где то в блоге довольно известного картографа из ESRI читал, что новые гугломапы это вообще большой шаг назад.
[13:03:00] <Runge> одним словом - сделано в Индии ))
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[13:52:30] <Hind> Runge: а есть что-нибудь на русском на эту тему?
[13:52:55] <Runge> на русском не встречал ( все на англ.
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[15:15:35] <Hind> Runge: ну на английском тоже пойдет
[15:15:43] <Hind> Лишь бы не на немецком :3
[15:15:47] <Runge> )))
[15:16:20] <Runge> а конкретнее что нужно? как задача расстановки решается или как ее на GPU расчитать?
[15:16:28] <Runge> я про надписи конечно
[15:37:09] <Mezonin_> Runge: поделись алгоритмом вписывания надписи в закругления
[15:38:01] <Runge> Mezonin_: в какие закругления? не совсем понятно
[15:38:39] <Mezonin_> ну, о веях речь, которые закругляются, название улицы на таких дорогах.
[15:40:11] <Runge> ааа. его довольно сложно будет вырезать из огромного куска кода по расстановке надписей
[15:40:37] <Mezonin_> Runge: а идея сложная вообще? в двух словах нельзя?
[15:42:49] <Runge> простая. имеется массив букв, полилиния и некоторая точка, которая лежит на линии. начинаем двигаться вдоль полилинии от этой точки и ставить буквы, поворачивая их в зависимости от кривизны полилинии.
[15:43:32] <Runge> можно глянуть реализацию в GeoServer или Mapnik
[15:43:53] <Runge> они должны быть похожи
[15:44:46] <Maks|3ssd> в mapnik для надписей на линиях идёт выравнивание линий
[15:46:00] <Hind> Runge: теоретическая часть
[15:46:08] <Hind> Про сам задачу
[15:46:19] <Hind> Ну и вообще общие принципы
[15:46:23] <Hind> Что считается хорошим, а что плохим
[15:46:27] <Hind> и почему
[15:46:44] <Runge> Hind: http://www.eecs.harvard.edu/~shieber/Biblio/Papers/gen-label.pdf - автомат. расстановка
[15:46:53] <Runge> куча литературы вот здесь http://i11www.iti.uni-karlsruhe.de/~awolff/map-labeling/bibliography/maplab_author.html
[15:47:24] <Runge> ну и конечно библия от картографов http://www.mapgraphics.net/downloads/Positioning_Names_on_Maps.pdf
[15:47:50] <Hind> О, вот это то, что надо
[15:47:51] <Hind> Спасибо
[15:47:56] <Runge> последняя ссылка это теория для ручной расстановке надписей, которой руководствуются картографы
[15:48:17] <Hind> Вот её-то я и хотел :3
[15:49:44] <Runge> по картографии я бы еще посоветовал Clifford H. Wood. A descriptive and illustrated guide for type placement on small scale maps. The Cartographic Journal, 37(1):5-18, June 2000.
[15:50:17] <Runge> а вот это первая статья по авт. расстановке Pinhas Yoeli. The logic of automated map lettering. The Cartographic Journal, 9:99-108, 1972.
[15:50:37] <Runge> Hind: пожалуйста
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[18:01:02] <AMDmi3> Maks|3ssd: лол: http://openstreetmap.ru/#map=16/56.3949/38.4619&layer=K номера участков >= 100 не рисуются потому что не влезают
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[18:04:31] <Maks|3ssd> AMDmi3: да, я видел уже. Я поменял шрифт на Паратайповский и немного увеличил его в угоду читаемости, полюс раздяка небольшая
[18:05:41] <Maks|3ssd> конкретно для мапника я выгоняю стиль с масштабом шрифта 120%, для бумаги масштаб шрифтов остаётся 100%
[18:12:26] <freeExec> а почему на том месте при наезде зумом меняется цвет заливки участков
[18:16:54] <Maks|3ssd> в первую очередь по тому, что у жилых зон и у садоводств один уровень отрисовки и иногда срабатывает раунд-робин в порядке отрисовки
[18:17:12] <Maks|3ssd> известный баг, требует переписывания уровней отрисовки во всём стиле
[18:17:30] <Maks|3ssd> в планах
[18:20:55] <Maks|3ssd> пока что главная задача для меня, над которой бьюсь без результатно: разложить полигоны границ (любых: страны, области) на неповторяющиеся и ненакладывающиеся линии
[18:21:35] <Maks|3ssd> в PostGIS
[18:21:55] <Maks|3ssd> так что бы без переборов циклами релейшенов
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[23:17:48] <psha> вот скажите мне
[23:17:54] <psha> кто-нибудь waterway relation понимает?
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