<div dir="ltr">Did you look at the definition of cross-correlation used by escorc<br><br><pre>cor = SUM [(X(t)-Xave)*(Y(t)-Yave)}]/(Xstd*Ystd) <br>note ... division by standard deviation(s)<br><br>==<br></pre><pre>The message says that one or more grid point series has all constant values.<br></pre><pre>If all are 0.0 or 10 or whatever, the standard deviation is zero.<br></pre><pre>Division by 0 is undefined so ... NCL warns you of this. <br>NCL calculates the cross correlation at all other points.<br>==<br><br><font size="4"><span><span style="white-space:pre-wrap"></span>significance of r: min=7.031559566397816e-07 max=0.9999383172328334</span></font><br><br></pre><pre>The significance of all the grid points span 0 (no correlation) to 0.999 (*100=99.9%)<br></pre><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Mar 8, 2015 at 9:17 AM, Vanúcia Schumacher <span dir="ltr"><<a href="mailto:vanucia-schumacher@hotmail.com" target="_blank">vanucia-schumacher@hotmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div dir="ltr"><font style="font-size:16pt" face="Calibri,sans-serif" color="#000000" size="4">Dear all,</font><div><font style="font-size:16pt" face="Calibri,sans-serif" color="#000000" size="4"><br></font></div><div><span style="font-size:21.3333339691162px">I'm trying cross-correlation and the significance rtest, but I am getting the following error when calculating the weather and anomaly data:</span></div><div><span style="font-size:21.3333339691162px"><br></span></div><div><div><span style="font-size:21.3333339691162px">warning:escorc: Non-fatal conditions encountered in series or xstd equals zero.</span></div><div><span style="font-size:21.3333339691162px">Possibly, all values of a series are constant.</span></div><div><span style="font-size:21.3333339691162px">warning:escorc: Most likely, one or more series consisted of all constant values</span></div><div style="font-size:21.3333339691162px"><br></div></div><div><div style="font-size:21.3333339691162px">Another problem that I see are the values of very strange rtest output!</div><div style="font-size:21.3333339691162px">I do not know if there's something wrong.</div><div style="font-size:21.3333339691162px"><br></div><div><div><span style="font-size:21.3333339691162px">Variable: rsig</span></div><div><span style="font-size:21.3333339691162px">Type: double</span></div><div><span style="font-size:21.3333339691162px">Total Size: 129600 bytes</span></div><div><span style="font-size:21.3333339691162px"> 16200 values</span></div><div><span style="font-size:21.3333339691162px">Number of Dimensions: 2</span></div><div><span style="font-size:21.3333339691162px">Dimensions and sizes:<span style="white-space:pre-wrap"> </span>[lat | 90] x [lon | 180]</span></div><div><span style="font-size:21.3333339691162px">Coordinates: </span></div><div><span style="font-size:21.3333339691162px"> lat: [ -89.. 89]</span></div><div><span style="font-size:21.3333339691162px"> lon: [ 0.. 358]</span></div><div><span style="font-size:21.3333339691162px">Number Of Attributes: 2</span></div><div><span style="font-size:21.3333339691162px"> long_name :<span style="white-space:pre-wrap"> </span>significance of r</span></div><div><span style="font-size:21.3333339691162px"> _FillValue :<span style="white-space:pre-wrap"> </span>1.000000020040877e+20</span></div><div><span style="font-size:21.3333339691162px">(0)<span style="white-space:pre-wrap"> </span>significance of r: min=7.031559566397816e-07 max=0.9999383172328334</span></div><div style="font-size:21.3333339691162px"><br></div></div><div style="font-size:21.3333339691162px">The last part of the script (attached) does not understand that the correct would plot (output > 0.05 or 0.95 to 95%)</div><div><span style="font-size:21.3333339691162px">ShadeGtContour(plot2, 0.95, 17) or ShadeGtContour(plot2, 0.05, 17) </span></div></div><div><span style="font-size:21.3333339691162px"><br></span></div><div><span style="font-size:21.3333339691162px">Thanks,</span></div> </div></div>
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