<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:"Calibri Light";
panose-1:2 15 3 2 2 2 4 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-GB" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal">Dear Fieldtrippers,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve been hitting a pretty high memory ceiling, so I’m trying to reduce the use of RAM as much as possible.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am at the point of using (source)statistics, in which I need to (t-)test against zero. Normally, I would just create dummy FT data-structures, in which I replace the parameter that is tested with 0. However, in my case this would result
in an asphyxiating (more than) doubling of data in memory. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Has anyone already created a ft_statfun that simply tests against a scalar (for all data points)? Or, if I would need to write my own, which existing ft_statfun would be most convenient do you think? Or perhaps there is another way around
it?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks!<o:p></o:p></p>
<p class="MsoNormal">Stephen<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;background:white;mso-fareast-language:EN-GB">Stephen Whitmarsh, PhD<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;background:white;mso-fareast-language:EN-GB">PostDoctoral Researcher | NatMEG<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;background:white;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;background:white;mso-fareast-language:EN-GB">Swedish National Facility for
<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;background:white;mso-fareast-language:EN-GB">Magnetoencephalography<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;mso-fareast-language:EN-GB">Office: +46 (0)8 524 833 33<br>
MEG lab: +46 (0)8 524 833 09<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;mso-fareast-language:EN-GB">stephen@NatMEG.se | NatMEG.se<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;mso-fareast-language:EN-GB"><img width="130" height="115" id="Picture_x0020_1" src="cid:image003.png@01D0E967.E8115E20" alt="NatMEG_POS_resized"></span><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;background:white;mso-fareast-language:EN-GB">Karolinska Institutet<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;mso-fareast-language:EN-GB">Department of Clinical Neuroscience<br>
Nobels väg 9, D2:240 | 171 77 Stockholm <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:"Calibri Light",sans-serif;color:#4472C4;mso-fareast-language:EN-GB">Stephen.Whitmarsh@ki.se | ki.se
<br>
<br>
</span><span style="font-family:"Calibri Light",sans-serif;color:#4472C4;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>