An isoline generating method based on regular grid data
Shu Zhou · Cehui kexue · 2015
With the means of access to grid data continuing to develop,regular grid data tends to be massive,while some of the existing software can not cope with the contour tracing of large grid data.Aiming at the problem that the traditional method takes up more memory,this paper proposed a method of tracing the isolines line-by-line for regular grid data.Through programming,compared with the traditional method,it was proved that the speed of the method would be better than in dealing with large regular grid data,and the progressive contour tracing method would greatly reduce the memory footprint for computers.Moreover,in order to solve the cross-cutting problem in contours smoothing and streamlining by the traditional method,it proposed using the way of regular grid interpolation and thinning.