October 11, 2010 at 12:55GIS ideas
At the university at the graduation work, I was engaged in the fact that I did a certain analogue of Internet cards. The most interesting thing was the work with cartographic information. When cards on the network became more common, I was glad because You can do very, very interesting things. Having spent some time with the Yandex.Maps API, I realized that there is a tool.
The technical part of the idea.
Yandex.Maps allow you to draw points, lines, polygons on top of maps. PostGis for PostgreSQL will help you figure out where to draw polygons, lines, and points. Mastering PostGis is easy enough. At least for the first result, it is enough to read the manual fluently.
Necessary information.
To carry out any calculations in PostGis, you must have a database of objects with their coordinates. At the thesis, we took demo versions of MapInfo maps, parsed them and filled the base. Yandex.Maps support geocoding (and vice versa, too), but unfortunately it’s impossible to get a database of city objects just like that. In addition, not only information about the coordinates of objects, but also a description of these objects is important. A small nuance, objects are not only buildings, but also roads, fields, forests, etc. Different information is available on different resources. The same Yandex.Maps, Mapia, real estate portals.
A couple of ideas.
1) For real estatethis may be an assessment of the attractiveness of housing. It is necessary to draw up a base of “positive” objects (shops, schools, kindergartens, hospitals, transport interchanges, parks) and “negative objects” (plants, factories, construction sites, busy roads, sedimentation tanks, etc.). Having built polygons of influence of "positive" and "negative" objects, calculating the intersections of these polygons and the degree of their influence, we can derive some estimates of the attractiveness of housing.
2) For businessit will be interesting to conduct an analysis using the Voronoi diagram, as well as its varieties. A few years ago I heard such a case. The client ordered an analysis from one GIS company. The client had several shops around the city. In each store you could buy a certain product. Having built the Voronoi diagram, it is clear where it is better to put another store and where you need to import more products.
3) A social project that suits government structures rather than business. Creating a map with environmental information.
4) Comic idea. Put a point somewhere in the city. Set the magnification factor. Those. point each iteration grows by 1km. This is done by building a buffer. By painting each new iteration, you can get an interesting picture. Then you can indulge in two things: the method of increasing the area and speed.
The technical part of the idea.
Yandex.Maps allow you to draw points, lines, polygons on top of maps. PostGis for PostgreSQL will help you figure out where to draw polygons, lines, and points. Mastering PostGis is easy enough. At least for the first result, it is enough to read the manual fluently.
Necessary information.
To carry out any calculations in PostGis, you must have a database of objects with their coordinates. At the thesis, we took demo versions of MapInfo maps, parsed them and filled the base. Yandex.Maps support geocoding (and vice versa, too), but unfortunately it’s impossible to get a database of city objects just like that. In addition, not only information about the coordinates of objects, but also a description of these objects is important. A small nuance, objects are not only buildings, but also roads, fields, forests, etc. Different information is available on different resources. The same Yandex.Maps, Mapia, real estate portals.
A couple of ideas.
1) For real estatethis may be an assessment of the attractiveness of housing. It is necessary to draw up a base of “positive” objects (shops, schools, kindergartens, hospitals, transport interchanges, parks) and “negative objects” (plants, factories, construction sites, busy roads, sedimentation tanks, etc.). Having built polygons of influence of "positive" and "negative" objects, calculating the intersections of these polygons and the degree of their influence, we can derive some estimates of the attractiveness of housing.
2) For businessit will be interesting to conduct an analysis using the Voronoi diagram, as well as its varieties. A few years ago I heard such a case. The client ordered an analysis from one GIS company. The client had several shops around the city. In each store you could buy a certain product. Having built the Voronoi diagram, it is clear where it is better to put another store and where you need to import more products.
3) A social project that suits government structures rather than business. Creating a map with environmental information.
4) Comic idea. Put a point somewhere in the city. Set the magnification factor. Those. point each iteration grows by 1km. This is done by building a buffer. By painting each new iteration, you can get an interesting picture. Then you can indulge in two things: the method of increasing the area and speed.