<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-size:small">Soma,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">The spi_2.ncl script shows you how to calculate the yyyymm variable:</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default"><div class="gmail_default"><font face="monospace, monospace"> year = yyyymm/100</font></div><div class="gmail_default"><font face="monospace, monospace"> yrStrt = year(0)</font></div><div class="gmail_default"><font face="monospace, monospace"> yrLast = year(ntim-1)</font></div><div class="gmail_default"><font face="monospace, monospace"> nyear = yrLast-yrStrt+1</font></div><div class="gmail_default"><font face="monospace, monospace"> yyyymm = yyyymm_time(yrStrt, yrLast, "integer") </font></div><div class="gmail_default"><br></div><div class="gmail_default">You don't need the "date" or "yyyymm" arrays, because you already have the year information. Use ispan to generate the "year" array and now you can get your yyyymm and yrfac values as needed:</div><div class="gmail_default"><br></div><div class="gmail_default"><div class="gmail_default"><font face="monospace, monospace"> year = ispan(1970,2010,1)</font></div><div class="gmail_default"><font face="monospace, monospace"> ntim = dimsizes(year)</font></div><div class="gmail_default"><font face="monospace, monospace"> yrStrt = year(0)</font></div><div class="gmail_default"><font face="monospace, monospace"> yrLast = year(ntim-1)</font></div><div class="gmail_default"><font face="monospace, monospace"> nyear = yrLast-yrStrt+1</font></div><div class="gmail_default"><font face="monospace, monospace"> yyyymm = yyyymm_time(yrStrt, yrLast, "integer") </font></div></div><div class="gmail_default"><font face="monospace, monospace"> yrfrac = (/ yyyymm_to_yyyyfrac(yyyymm, 0.0) /)</font></div><div class="gmail_default"><br></div><div class="gmail_default">--Mary</div><div class="gmail_default"><br></div><div class="gmail_default"><br></div></div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><br></div></div></div><br><div class="gmail_quote"><div dir="ltr">On Wed, Nov 28, 2018 at 1:05 PM Soma Roy <<a href="mailto:somaroy892@gmail.com">somaroy892@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div dir="auto">Thank you very much for the hint.</div><div dir="auto">I will check it.</div><div dir="auto"><br></div><div dir="auto">But mannualy we can't set the "date" range in the script without using CDO?</div><div dir="auto"><br></div><div dir="auto">Please kindly inform me.</div><div dir="auto"><br></div><div dir="auto">Thanking you,</div><div dir="auto">Soma</div><div dir="auto"><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Thu, Nov 29, 2018, 01:28 Guilherme Martins <<a href="mailto:jgmsantos@gmail.com" target="_blank">jgmsantos@gmail.com</a> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto">I don't know if you use climate data operators or cdo software.<div dir="auto"><br></div><div dir="auto">You can set the data in your file.</div><div dir="auto"><br></div><div dir="auto">Exemple</div><div dir="auto"><br></div><div dir="auto">cdo settaxis,1970-01-01,00:00:00,1mon <a href="http://input.nc" rel="noreferrer" target="_blank">input.nc</a> <a href="http://output.nc" rel="noreferrer" target="_blank">output.nc</a></div><div dir="auto"><br></div><div dir="auto">Guilherme.</div><div dir="auto"><br></div></div><br><div class="gmail_quote"><div dir="ltr">Em qua, 28 de nov de 2018 16:35, Soma Roy <<a href="mailto:somaroy892@gmail.com" rel="noreferrer" target="_blank">somaroy892@gmail.com</a> escreveu:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div dir="auto">Hello,</div><div dir="auto"><br></div><div dir="auto">I am trying to calculate standadize precipitation index using monthly gridded dataset.</div><div dir="auto"><br></div><div dir="auto">Dimension of data is like below;</div><div dir="auto">Rainfall(12x41) (months x years).</div><div dir="auto"><br></div><div dir="auto">I am using the script from the below link;</div><a href="https://www.ncl.ucar.edu/Applications/Scripts/spi_2.ncl" rel="noreferrer noreferrer" target="_blank">https://www.ncl.ucar.edu/Applications/Scripts/spi_2.ncl</a><div dir="auto"><br></div><div dir="auto">But in my dataset there is no variable as "date".</div><div dir="auto"><br></div><div dir="auto">Can we manually set the date range inside the script?</div><div dir="auto"><br></div><div dir="auto">I am using rainfall dataset for 1970-2010.</div><div dir="auto"><br></div><div dir="auto">Please kindly inform me how we can modify it over the same script.</div><div dir="auto"><br></div><div dir="auto">Thanking you,</div><div dir="auto">Soma </div></div>
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