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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi Grad Users,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Below is my question and work done so far on my problem, please guide me to solve.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>Question</b> : How to calculate the strength of ocean current data to provide different colors to different levels using Grads ?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>Work Done so far : </b>Ocean current data downloaded from NOAA and below is the ctlinfo from the NetCDF data<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>dset D:\OceanData\2014\05\25\rtofs_glo_2ds_f024_daily_prog.nc<o:p></o:p></b></p><p class=MsoNormal><b>title 2D Sfc Daily Prognostic 00Z21may2014: Forecast, downloaded May 25 15:22 UTC<o:p></o:p></b></p><p class=MsoNormal><b>undef 1.26765e+30<o:p></o:p></b></p><p class=MsoNormal><b>dtype netcdf<o:p></o:p></b></p><p class=MsoNormal><b>xdef 720 linear 74.16 0.49998<o:p></o:p></b></p><p class=MsoNormal><b>ydef 360 linear -90 0.49998<o:p></o:p></b></p><p class=MsoNormal><b>zdef 1 linear 1 1<o:p></o:p></b></p><p class=MsoNormal><b>tdef 1 linear 00Z25MAY2014 1mn<o:p></o:p></b></p><p class=MsoNormal><b>vars 2<o:p></o:p></b></p><p class=MsoNormal><b>u_velocity=>u_velocity 1 t,z,y,x eastward_sea_water_velocity (m/s)<o:p></o:p></b></p><p class=MsoNormal><b>v_velocity=>v_velocity 1 t,z,y,x northward_sea_water_velocity (m/s)<o:p></o:p></b></p><p class=MsoNormal><b>endvars<o:p></o:p></b></p><p class=MsoNormal><b><o:p> </o:p></b></p><p class=MsoNormal>Am using below selected commands to generate vectors, and automatically it gives in strength in terms of length of arrow.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>sdfopen D:/ OceanData /2014/05/25/rtofs_glo_2ds_f024_daily_prog.nc<o:p></o:p></b></p><p class=MsoNormal><b>d u_velocity.1; v_velocity.1<o:p></o:p></b></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>if I make vector’s scaling fixed to 0.015 using ‘<b>set arrscl 0.15</b>‘. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>So how can I calculate strength of vectors to provide them colors according to levels ?<b><o:p></o:p></b></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='color:#215868'>Thanks & Regards<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='color:#215868'>Anil Kumar</span></b><b><span style='color:#00A1DA'><o:p></o:p></span></b></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>