<div dir="ltr">Hi Archana,<div>I do not believe there is a set method to help you come up with nscan and epsx. Just trial and error. Yes, you will want to set is_cyclic to False if your data is not global.</div><div><br></div><div>poisson_grid_fill is a good choice for interpolation as it excels at filling in data both within data boundaries and along the edges. I believe it is the favored interpolation/extrapolation routine around here when infilling is required. </div><div><br></div><div>Hope that helps!</div><div>Adam </div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Nov 18, 2015 at 6:08 PM, Archana Dayalu <span dir="ltr"><<a href="mailto:adayalu@seas.harvard.edu" target="_blank">adayalu@seas.harvard.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello,<div>I am fairly new to methods of interpolation, and am considering using poisson_grid_fill to interpolate missing values after I quality filtered some 500m MODIS reflectance data (MOD09A1 product). Is there a method to determine the optimal values for nscan and epsx? In addition, I am not working with a global data set, so that would indicate is.cyclic = FALSE if I understood that argument correctly?</div><div>Thanks for any help.</div><div>Regards,</div><div>Archana<br clear="all"><div><br></div><div> </div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div><div><span><font color="#888888">Adam Phillips <br></font></span></div><span><font color="#888888">Associate Scientist, </font></span><span><font color="#888888">Climate and Global Dynamics Laboratory, NCAR<br></font></span></div></div><div><span><font color="#888888"><a href="http://www.cgd.ucar.edu/staff/asphilli/" target="_blank">www.cgd.ucar.edu/staff/asphilli/</a> </font></span><span><font color="#888888">303-497-1726 </font></span></div><span><font color="#888888"></font></span><div><div><span><font color="#888888"><br></font></span><div><span><font color="#888888"><a href="http://www.cgd.ucar.edu/staff/asphilli" target="_blank"></a></font></span></div></div></div></div></div></div></div></div></div></div></div>
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