用grads画降水站点，怎么用不同颜色画站点

瑾珂

'reinit'
'open e:/djby/rain/rain2018122908-3008.ctl'
'set lon 97 107'
'set lat 21 30'
'set grads off'
'set grid off'
'set mpdset yunn'
'set xlopts 1 10 0.2'
'set ylopts 1 10 0.2'
'set xlpos -10'
'set ylpos -10'

*'set gxout shaded'
*'E:\DJBY\rain\raincolor4.gs'
'set clevs 10 25 50 100 '
'set gxout stnmark'
'set cmark 3'
'set digsiz 0.1'
'set cint 5'
'set font 5'
'd rain'
*'run cbar_interp1 1 1 1 9.5 4.0'
'run axis.gs -type b  -position o  -start 97 -end 107  -interval 2 -lsize 0.2 -suffix `3.'
'run axis.gs -type L  -position o  -start 21 -end 30 -interval 1 -lsize 0.2  -suffix `3. -hoffset -0.2'
'printim E:\DJBY\rain\rain2018122908-3008sta.png white x1000 y800'
'c'
'disable print'
;