2009, Vol.9, No.2

Journal of the Korean Cartographic Association 2023 KCI Impact Factor : 1.34

pISSN : 1598-6160
https://journal.kci.go.kr/jkca

The purpose of this study is to provide visual wind resource information from WRF model and support renewable energy(RE) use. Multi-dimensional WRF model was visualized by wind barb design. Graphics and colors for wind barb are defined and times were serialized. Three WRF model web DB conversion algorithms were compared for system efficiency and finally optimized web DB (KML) was integrated with other geo-spatial DB by mesh-up with Google Earth. Microsoft .NET was used for wind barb design and Google Earth v.4.3 was used for mesh-up and RE application. This study will help not only RE use but also reliable decision making in urban/land activities.

It is inconvenient to obtain geographic coordinate value on a paper map which the space between lines of latitude and longitude is relatively large. Also it is unhandy to find one's location on a paper map by using handheld GPS. Due to these problems, one tend not to use paper map with handheld GPS even if the paper map provides plentiful geographical information. Also it is impossible to use a paper map with handheld GPS if the paper map does not contain several coordinate lines, coordinate value, and geodetic datum. The map based rectangular grid can solve these problems that one can easily use any kind of paper map through the handheld GPS. The map based rectangular grid is a projected coordinate system which the user can arbitrarily plan. It is a coordinate system which increases its value by 1cm along horizontal and vertical grid lines regardless of the map scale. It is easy and fast to attain located points since coordinate value can indicate the value of map based rectangular grid on a paper map. The user can directly input user define coordinate system by setting up coordinate system of handheld GPS. By using map based rectangular grid, it is easier and faster to indicate the specific value of map based rectangular grid, and one can just input the corresponding value to handheld GPS and save as “Waypoint”. However it has drawbacks that it requires to coordinate system set up on the handheld GPS according to paper used. Another problem is that it is not used commonly because the value of map based rectangular grid generates relative coordinate value.

This study considers the life and achievements of Tadataka Ino, who is the representative Japanese geographer and made the first map of Japan by land surveying; Dainihon enkai yochi zenzu. We mainly investigate his life before he began to study regularly in his fifties, the historic and social background of Japan at that time, and also the whole process of making the map by the land surveying of the whole Japan. At first, Tadataka Ino began the land surveying with his individual effort in order to measure the correct distance of latitude 1 degree. But finally, this map was completed as the official work of the Tokugawa Shogunate, because the importance and necessity of the map had come to be more widely acknowledged in the historic and social background of Japan at that time.