Dear grass user Recently, I am feeling sorry for many questions....
I'm looking for how to plot arrows of speed and direction of wind. for example, if station A has 4m/s and Eest (degree 90 )of annual average wind situation, the plot like arrow style; <----xA Other hand, if station B has 2m/s and West (degree 270 ) of annal average wind situation, the plot also like arrow style: Bx--> ...and so on. In this case, data set is as follows; station | lat | lon | w.speed | w.direction | tokyo | 35.2| 25.4| 4.0 | 90 | osaka | 24.5| 33.9| 2.0 | 270 | ... w.speed is single and w.direction is integer. Wind direciotn ranges between 1 (=north), 90 (=east), 180 (=south), 270 (=west) and 360 (=north). I think that this data set can import to vector data by using v.in.ascii... So, I'm looking for command -- d.vect --, but can not find to arrows style of speed and direction of wind...I think that it is difficult to show an arrow st yle by using two properties (=two columns, speed and direction ).... Please teach me if there is profitable information... Yasuo shimada ( japan weather association ) _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user