{"sections":["# Welcome to MapComplete Studio\n\nHi!\n\nWelcome to MapComplete Studio.\n\nThese slides will walk you through the most important concepts to use MapComplete Studio effectively\n","# What is OpenStreetMap?\n\n[OpenStreetMap](https://openstreetmap.org) is a worldwide, collaborative project where we map the world together.\n\nPeople worldwide do add data about features around the world, such as streets, shops, toilets, infrastructure, ...\n\nAll type of objects are welcome to be added into OpenStreetMap, as long as:\n\n1. *The object can be verified on the ground and is present*\n2. *The object is permanent*\n\n<img src=\"./assets/svg/osm-logo.svg\" class=\"h-48\"/>\n\nThe following items are thus *not* welcome:\n\n- Do not add events such as a festival\n- Do not add measurements of e.g. air quality, traffic counts, ... [Sensor.Community](https://sensor.community/) is the right place for this\n- Do not add points that are only interesting to you (e.g. the route of your next trip). [UMap](https://umap.openstreetmap.fr) is the right tool for this \n- Do not add privacy-sensitive information, e.g. the names of persons living in a house\n- Do not add data about now demolished items, such as 'there was a battle here 100 years ago' or 'there was a school here, before it was completely demolished and rebuild'. This can be added to [OpenHistoricalMap](https://www.openhistoricalmap.org/) instead.\n","# How can OpenStreetMap data be reused?\n\nOpenStreetMap data can be reused freely, including for commercial purposes. However, you have to:\n\n1. Give attribution\n2. Keep the data open - changes to data based on OpenStreetMap must be published under the same license.\n\nSee the [full copyright notice](https://osm.org/copyright) for details\n\nThis also means that we are *not* allowed to copy data from other maps. Do not enter data based on Google Maps!\n","# How does OpenStreetMap organise the data?\n\nIn OpenStreetMap, the geodata can be one of three types:\n\n- **Points** which have a geocoordinate\n- **Lines** which are a _list_ of points. Closed lines are used to represent polygons\n- **Relations** which are a _list_ of points, lines and/or other relations.\n\nAll of those objects have a set of **attributes**. These are pairs of a **key** and a **value** which tell us what a point or line does represent. For example, `amenity=bench` represents a sitting bench. \n\nYou can find the meaning of all those keys and values on the [OpenStreetMap-wiki](https://wiki.openstreetmap.org/)\n\n\n<img src=\"./assets/docs/NodesAndLines.svg\" class=\"mt-8\">\n","# OpenStreetMap does **not** have layers\n\nMany traditional GIS-applications organise the data into layers.\n\nOpenStreetMap does not do this. Consider this place:\n\n<div class=\"flex\">\n<img class=\"w-1/2 pr-4\" src=\"./assets/docs/SpelOpDeWagen.jpg\">\n\n<div>\n\nThis place has three functions:\n\n- It is a shop, selling boardgames\n- It is a café, where one can drink a tea (while testing one of the board games)\n- It is a social inclusion project for people with a mental disability\n\nIn a traditional system with layers, one would either have to choose the most fitting layer (e.g. the layer `pub`, `shops` or `social facility`? ) losing the multi-facetted aspect of the place. \nAnother approach could be to add it to all three layers, duplicating the data. However, this makes maintaining the data harder.\n</div>\n</div>\n","# What is MapComplete?\n\nMapComplete is a map viewer and editor. A contributor is presented a *thematic map* with features that are relevant to this topic.\n\nThese features are based on OpenStreetMap. If some data is not known, the user will be asked some **questions** and is invited to answer them. These answers are sent back to OpenStreetMap, updating it there.\n\n<img src=\"./assets/docs/UIExample.png\" class=\"w-1/2\"/>\n\nData can also be loaded and visualised from external sources. No changes can be made to this externally loaded data in that case.\n\n\n","#MapComplete_does_havelayers\n\nAlayerinmapcompletedescribesasingletypeof
