GRADS实习作业.doc

1)编写简单的gs文件,分别绘制一个简单的一维图形(曲线)、二维图形(等值线),并生成图形文件(三种格式),。<1>'reinit''opend:\grads\''enableprintd:\grads\homework\''setgxoutline''setx137''sety1''setz1''sett1''du''print''disableprint'*'printimd:\grads\homework\';<2>'reinit''opend:\grads\''enableprintd:\grads\homework\''setgxoutcontour''setx137''sety117''setz1''sett1''du''print''disableprint'*'printimd:\grads\homework\';2)熟悉三类坐标的用法,掌握查询命令Q,特别掌握其坐标转换命令的用法,并在grads命令提示符下运行“Qw2xy12020”,看看其转换结果。实习三1)掌握line\bar\contour\shaded形式的绘图;学会fwrite的用法。注:line与contour参考实习一<1>'reinit''opend:\grads\''enableprintd:\grads\homework\''setgxoutbar''setx137''sety1''setz1''sett1''du''print''disableprint'*'printimd:\grads\homework\';<2>'reinit''opend:\grads\''enableprintd:\grads\homework\''setgxoutshaded''setx137''sety117''setz1''sett1''du''print''disableprint'*'printimd:\grads\homework\';2)掌握阴影图和等值线一起绘图时的顺序;'reinit''opend:\grads\''enableprintd:\grads\homework\''setgxoutshaded''setx137''sety117''setz1''sett1''du''setgxoutcontour''du''print''disableprint'*'printimd:\grads\homework\';3)自定义绘制一张line\bar图(同样资料叠加)。'reinit''opend:\grads\''enableprintd:\grads\homework\''setgxoutbar''setx137''sety1''setz1''sett1''du''setgxoutline''du''print''disableprint'*'printimd:\grads\homework\';自定义绘制一张contour\shaded图(同样资料叠加)注:参考上一问。4)从原始资料中写出20-30N,80-100E范围内资料,并配以数据描述文件,简单绘图验证正确与否。<1>'reinit''opend:\grads\''setfwrited:\grads\homework\''setgxoutfwrite''setlon80100''setlat2030''sett148''du''disablefwrite';<2>相应的ctl文件dsetd:\grads\homework\-+33titleNCEP/(m/s)V299vwind(m/s)H199H500TSFC199TSFCDATAendvars<3>'reinit''opend:\grads\homework\''setgxoutshaded''setlat2030''setlon80100''sett1''du''setgxoutcontour''du''printimd:\grads\ho