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<body class='hmmessage'><div dir='ltr'><font face="Calibri,sans-serif" color="#000000"><div><span style="font-size: 21.3333339691162px;">t is a variable of lat and lon (90,180)</span></div><div><span style="font-size: 21.3333339691162px;">t1 is an index created in another grid lat and lon </span></div><div><span style="font-size: 21.3333339691162px;"><br></span></div><div><span style="font-size: 21.3333339691162px;">I want to examine how this index is correlated with the variable in the grid variable (t) and not in t1 grid, </span><span style="font-size: 21.3333339691162px;">and make a significance test, if I could use only DOF1, for this case?</span></div></font><br><br><div><hr id="stopSpelling">From: abrammer@albany.edu<br>Date: Mon, 11 May 2015 14:36:35 -0400<br>Subject: Re: [ncl-talk] Dimension size, for dimension number 0, of operands does not match<br>To: vanucia-schumacher@hotmail.com<br>CC: ncl-talk@ucar.edu<br><br><div dir="ltr"><div class="ecxgmail_default" style="font-family:verdana,sans-serif;">You need to work out/ decide how t and t1 relate to each other. </div><div class="ecxgmail_default" style="font-family:verdana,sans-serif;"><br></div><div class="ecxgmail_default" style="font-family:verdana,sans-serif;">Is t1 a subset of t?</div><div class="ecxgmail_default" style="font-family:verdana,sans-serif;">Is it coarser resolution? </div><div class="ecxgmail_default" style="font-family:verdana,sans-serif;">How does t(25,36,10) actually relate to t1 ? </div><div class="ecxgmail_default" style="font-family:verdana,sans-serif;"><br></div><div class="ecxgmail_default" style="font-family:verdana,sans-serif;">Rhetorical questions for you to answer yourself. Not sure how one would compare two geographical grids with such different dimensions unless it is a subset. In which case you should subset t to be the same area as t1. </div><div class="ecxgmail_default" style="font-family:verdana,sans-serif;"><br></div><div class="ecxgmail_default" style="font-family:verdana,sans-serif;">dof1 and dof2 are created from t & t1 so fixing t & t1 will fix dof1 & dof2 issues. <br></div><div class="ecxgmail_default" style="font-family:verdana,sans-serif;"><br></div><div class="ecxgmail_default" style="font-family:verdana,sans-serif;">Alan. </div><div class="ecxgmail_default" style="font-family:verdana,sans-serif;"><br></div></div><div class="ecxgmail_extra"><br><div class="ecxgmail_quote">On 11 May 2015 at 14:29, Vanúcia Schumacher <span dir="ltr"><<a href="mailto:vanucia-schumacher@hotmail.com" target="_blank">vanucia-schumacher@hotmail.com</a>></span> wrote:<br><blockquote class="ecxgmail_quote" style="border-left:1px #ccc solid;padding-left:1ex;">
<div><div dir="ltr"><div style="font-size:21.3333339691162px;">NCL users,</div><div style="font-size:21.3333339691162px;"><br></div><div style="font-size:21.3333339691162px;"><br></div><div style="font-size:21.3333339691162px;">I need to calculate the correlation between two variables with different lat and lon. But when I try to calculate the significance test this correlation appears this error:</div><div style="font-size:21.3333339691162px;"><br></div><div><div><span style="font-size:21.3333339691162px;"><font color="#ac193d">Dimension size, for dimension number 0, of operands does not match, can't continue</font></span></div></div><div style="font-size:21.3333339691162px;"><br></div><div style="font-size:21.3333339691162px;"><br></div><div style="font-size:21.3333339691162px;">I understand that the error is due to DOF1 and dof2 have different sizes of lat and lon, but how could I solve it in this case?</div><div style="font-size:21.3333339691162px;"><br></div><div style="font-size:21.3333339691162px;">My code:</div><div style="font-size:21.3333339691162px;"><br></div><div style="font-size:21.3333339691162px;">....</div><div style="font-size:21.3333339691162px;"><br></div><div><div><span style="font-size:21.3333339691162px;"> r = escorc( t, t1 ) ; correlation</span></div><div><span style="font-size:21.3333339691162px;">cor= r(:,:,0,0)</span></div><div><span style="font-size:21.3333339691162px;">copy_VarCoords(t,cor)</span></div><div><br></div><div><span style="font-size:21.3333339691162px;">; Calculate degrees of freedom for each time series pair</span></div><div><span style="font-size:21.3333339691162px;">; This estimates the dof in autocorrelated series. </span></div><div><span style="font-size:21.3333339691162px;"> </span></div><div><span style="font-size:21.3333339691162px;"> siglvl = 0.05</span></div><div><span style="font-size:21.3333339691162px;"> dof1 = equiv_sample_size (t, siglvl,0)</span></div><div><span style="font-size:21.3333339691162px;"> dof2 = equiv_sample_size (t1, siglvl,0)</span></div><div><br></div><div><span style="font-size:21.3333339691162px;"> ; For each grid point time series pair, choose the lesser abs value</span></div><div><span style="font-size:21.3333339691162px;"> </span></div><div><span style="font-size:21.3333339691162px;"><font color="#ac193d"> dof = where(abs(dof1).le.abs(dof2), dof1, dof2) error line</font></span></div><div><span style="font-size:21.3333339691162px;"><br></span></div><div><span style="font-size:21.3333339691162px;"> copy_VarCoords(cor,dof)</span></div><div><br></div><div><span style="font-size:21.3333339691162px;"> rsig = rtest( cor, round(dof,3), 0) ; r test NCL</span></div><div><span style="font-size:21.3333339691162px;">...</span></div><div><span style="font-size:21.3333339691162px;"><br></span></div><div><span style="font-size:21.3333339691162px;"><br></span></div><div><div><span style="font-size:21.3333339691162px;">Variable: t</span></div><div><span style="font-size:21.3333339691162px;">Type: float</span></div><div><span style="font-size:21.3333339691162px;">Total Size: 1944000 bytes</span></div><div><span style="font-size:21.3333339691162px;"> 486000 values</span></div><div><span style="font-size:21.3333339691162px;">Number of Dimensions: 3</span></div><div><span style="font-size:21.3333339691162px;">Dimensions and sizes:<span style="white-space:pre-wrap;"> </span>[lat | 90] x [lon | 180] x [time | 30]</span></div><div style="font-size:21.3333339691162px;"><br></div></div><div><div><span style="font-size:21.3333339691162px;">Variable: t1</span></div><div><span style="font-size:21.3333339691162px;">Type: float</span></div><div><span style="font-size:21.3333339691162px;">Total Size: 7920 bytes</span></div><div><span style="font-size:21.3333339691162px;"> 1980 values</span></div><div><span style="font-size:21.3333339691162px;">Number of Dimensions: 3</span></div><div><span style="font-size:21.3333339691162px;">Dimensions and sizes:<span style="white-space:pre-wrap;"> </span>[lat | 6] x [lon | 11] x [time | 30]</span></div><div><span style="font-size:21.3333339691162px;">Coordinates: </span></div><div style="font-size:21.3333339691162px;"><br></div></div><div><span style="font-size:21.3333339691162px;"> Variable: r</span></div><div><span style="font-size:21.3333339691162px;">Type: float</span></div><div><span style="font-size:21.3333339691162px;">Total Size: 4276800 bytes</span></div><div><span style="font-size:21.3333339691162px;"> 1069200 values</span></div><div><span style="font-size:21.3333339691162px;">Number of Dimensions: 4</span></div><div><span style="font-size:21.3333339691162px;">Dimensions and sizes:<span style="white-space:pre-wrap;"> </span>[90] x [180] x [6] x [11]</span></div><div><span style="font-size:21.3333339691162px;">Coordinates: </span></div><div><span style="font-size:21.3333339691162px;">Number Of Attributes: 1</span></div><div><span style="font-size:21.3333339691162px;"><br></span></div><div><div><span style="font-size:21.3333339691162px;">Variable: cor</span></div><div><span style="font-size:21.3333339691162px;">Type: float</span></div><div><span style="font-size:21.3333339691162px;">Total Size: 64800 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 style="font-size:21.3333339691162px;"><br></div></div><div><br></div><div><div>Variable: dof1</div><div>Type: integer</div><div>Total Size: 64800 bytes</div><div> 16200 values</div><div>Number of Dimensions: 2</div><div>Dimensions and sizes:<span style="white-space:pre-wrap;"> </span>[90] x [180]</div><div>Coordinates: </div><div><br></div><div>Variable: dof2</div><div>Type: integer</div><div>Total Size: 264 bytes</div><div> 66 values</div><div>Number of Dimensions: 2</div><div>Dimensions and sizes:<span style="white-space:pre-wrap;"> </span>[6] x [11]</div></div><div><br></div><div style="font-size:21.3333339691162px;"><br></div></div> </div></div>
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