<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>It sounds like what you really need are two axes -- a time axis with a monthly increment, and another axis for the diurnal cycle at hours 8, 11, 14, and 23 (E with a size of 4 would be useful for that). You can't plot data at 12hourly and monthly increments in the same dimension. You will probably need a full descriptor to get it right. What does the ncdump output look like? </div><div>--Jennifer</div><div><br></div><div><br><div><br><div><div>On May 20, 2014, at 1:32 PM, Stefano Materia wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Dear all,<br>I am facing a very annoying problem which I am not able to get around.<br><br>I have netcdf data for the month of January, in which four temperatures<br>are registered every day: at 8:00am, 11:00am, 2:00pm, 11:00pm. Basically,<br>I have 124 values per month (31*4) specified at those exact times of the<br>day, and this is how I want to graph them.<br><br> RefTime = 1980-01-01 06:00:00 Units = days Calendar = standard<br> YYYY-MM-DD hh:mm:ss YYYY-MM-DD hh:mm:ss YYYY-MM-DD hh:mm:ss YYYY-MM-DD<br>hh:mm:ss<br> 1980-01-01 08:00:00 1980-01-01 11:00:00 1980-01-01 14:00:00 1980-01-01<br>23:00:00<br> 1980-01-02 08:00:00 1980-01-02 11:00:00 1980-01-02 14:00:00 1980-01-02<br>23:00:00<br> 1980-01-03 08:00:00 1980-01-03 11:00:00 1980-01-03 14:00:00 1980-01-03<br>23:00:00<br> 1980-01-04 08:00:00 1980-01-04 11:00:00 1980-01-04 14:00:00 1980-01-04<br>23:00:00<br> ...<br><br>When I try to plot this in Grads though, the time axis becomes<br>disarranged: Grads splits the time steps every three hours<br><br>ga-> q file<br>File 1 :<br> Descriptor: tday_jan_daymean_1981-2010.nc<br> Binary: tday_jan_daymean_1981-2010.nc<br> Type = Gridded<br> Xsize = 464 Ysize = 201 Zsize = 1 Tsize = 124 Esize = 1<br> Number of Variables = 1<br> tn 0 t,y,x temperature<br>ga-> set t 1<br>Time values set: 1980:1:1:8 1980:1:1:8<br>ga-> set t 2<br>Time values set: 1980:1:1:11 1980:1:1:11<br>ga-> set t 3<br>Time values set: 1980:1:1:14 1980:1:1:14<br>ga-> set t 4<br>Time values set: 1980:1:1:17 1980:1:1:17<br>ga-> set t 5<br>Time values set: 1980:1:1:20 1980:1:1:20<br>ga-> set t 6<br>Time values set: 1980:1:1:20 1980:1:1:23<br><br>This is not right, because I need my points to be centered at the time<br>temperature are registered. Attached, a snapshot of the wrong plot coming<br>out (for simplicity, I plotted up to the 16th timestep, which should be<br>Jan 4, but it's not).<br><br>I do not even find a way to specify this into the TDEF of a ctl file.<br><br>Is anyone able to help me?<br>Thanks a lot!<br><br>-- <br>Stefano Materia, PhD<br>Centro Euro-Mediterraneo sui Cambiamenti Climatici<br>Viale Aldo Moro, 44 - 40127 Bologna<br>Tel: +39 051 3782611<br>Fax: +39 051 3782655<br><br><br><span><GradsPlot.png></span>_______________________________________________<br>gradsusr mailing list<br><a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br>http://gradsusr.org/mailman/listinfo/gradsusr<br></div></blockquote></div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><span class="Apple-style-span" style="border-collapse: separate; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; -webkit-text-decorations-in-effect: none; text-indent: 0px; -webkit-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div>--</div><div>Jennifer M. Adams<br>Center for Ocean-Land-Atmosphere Studies (COLA)<br>111 Research Hall, Mail Stop 2B3<br>George Mason University<br>4400 University Drive<br>Fairfax, VA 22030 <br><br></div><div><br class="khtml-block-placeholder"></div><br class="Apple-interchange-newline"></span></span></div></span></span><br class="Apple-interchange-newline">
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