<div dir="ltr">Hi Everyone,<div><br></div><div>I have NetCDF data downloaded for Ocean Current from NOAA website and is attached for reference. Below is the NCDump</div><div><br></div><div><div><b>netcdf rtofs_glo_2ds_f024_daily_prog {</b></div>
<div><b>dimensions:</b></div><div><b> lat = 360 ;</b></div><div><b> lev = 1 ;</b></div><div><b> lon = 720 ;</b></div><div><b> time = 1 ;</b></div><div><b>variables:</b></div><div><b> double lat(lat) ;</b></div>
<div><b> lat:grads_dim = "y" ;</b></div><div><b> lat:grads_mapping = "linear" ;</b></div><div><b> lat:grads_size = "2160" ;</b></div><div><b> lat:units = "degrees_north" ;</b></div>
<div><b> lat:long_name = "latitude" ;</b></div><div><b> lat:minimum = -90. ;</b></div><div><b> lat:maximum = 89.90947 ;</b></div><div><b> lat:resolution = 0.08333f ;</b></div>
<div><b> double lev(lev) ;</b></div><div><b> lev:grads_dim = "z" ;</b></div><div><b> lev:grads_mapping = "levels" ;</b></div><div><b> lev:units = "millibar" ;</b></div>
<div><b> lev:long_name = "altitude" ;</b></div><div><b> lev:minimum = 1. ;</b></div><div><b> lev:maximum = 1. ;</b></div><div><b> double lon(lon) ;</b></div><div>
<b> lon:grads_dim = "x" ;</b></div><div><b> lon:grads_mapping = "linear" ;</b></div><div><b> lon:grads_size = "4320" ;</b></div><div><b> lon:units = "degrees_east" ;</b></div>
<div><b> lon:long_name = "longitude" ;</b></div><div><b> lon:minimum = 74.16 ;</b></div><div><b> lon:maximum = 434.06227 ;</b></div><div><b> lon:resolution = 0.08333f ;</b></div>
<div><b> double time(time) ;</b></div><div><b> time:grads_dim = "t" ;</b></div><div><b> time:grads_mapping = "linear" ;</b></div><div><b> time:grads_size = "9" ;</b></div>
<div><b> time:grads_min = "00z13mar2014" ;</b></div><div><b> time:grads_step = "1dy" ;</b></div><div><b> time:units = "days since 1-1-1 00:00:0.0" ;</b></div>
<div><b> time:long_name = "time" ;</b></div><div><b> time:minimum = "00z13mar2014" ;</b></div><div><b> time:maximum = "00z21mar2014" ;</b></div><div>
<b> time:resolution = 1.f ;</b></div><div><b> float u_velocity(time, lev, lat, lon) ;</b></div><div><b> u_velocity:_FillValue = 1.26765e+030f ;</b></div><div><b> u_velocity:missing_value = 1.26765e+030f ;</b></div>
<div><b> u_velocity:long_name = "eastward_sea_water_velocity (m/s) " ;</b></div><div><b> float v_velocity(time, lev, lat, lon) ;</b></div><div><b> v_velocity:_FillValue = 1.26765e+030f ;</b></div>
<div><b> v_velocity:missing_value = 1.26765e+030f ;</b></div><div><b> v_velocity:long_name = "northward_sea_water_velocity (m/s) " ;</b></div><div><b><br></b></div><div><b>// global attributes:</b></div>
<div><b> :title = "2D Sfc Daily Prognostic 00Z13mar2014: Forecast, downlo</b></div><div><b>aded Mar 13 15:18 UTC" ;</b></div><div><b> :Conventions = "COARDS\n",</b></div>
<div>
<b> "GrADS" ;</b></div><div><b> :dataType = "Grid" ;</b></div><div><b> :history = "Thu Mar 13 11:21:41 EDT 2014 : imported by GrADS Data Server 2.0" ;</b></div>
<div><b> :NCO = "20140314" ;</b></div><div><b>}</b></div></div><div><br></div><div><br></div><div>I need to Plot the current Streams as output, Attached image can be treated as output sample.<br>
currently, I am using below command for displaying u_velocity and v_velocity variables </div>
<div><br></div><div><div><b>d skip(u_velocity*1.95,14,14);skip(v_velocity*1.95,14,14)</b></div></div><div><b><br></b></div><div>with skip function I am only able to plot arrow but no stream (we can say axis of current)</div>
<div><br></div><div>I really don't know how to get this working. Any help on it please</div><div><br></div><div>-- Anil</div><div><br> </div>
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