<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><font class="Apple-style-span" face="Arial">Hi,</font><div><font class="Apple-style-span" face="Arial"><br></font></div><div><font class="Apple-style-span" face="Arial">NegEscapeVelocity is a field I created that needs a field parameter. Density doesn't need any field parameters and works fine. I have the same problem if I try it with any field that needs a field parameter, for example:</font></div><div><font class="Apple-style-span" face="Arial"><br></font></div><div><font class="Apple-style-span" face="Arial">contours = dd.extract_connected_sets("Radius", 1, 30.0, maxv, log_space=False)</font></div><div><font class="Apple-style-span" face="Arial"><br></font></div><div><font class="Apple-style-span" face="Arial">fails because it needs:</font></div><div><font class="Apple-style-span" face="Arial"><br></font></div><div><pre><span class="n"><font class="Apple-style-span" face="Arial">center</font></span><font class="Apple-style-span" face="Arial"> </font><span class="o"><font class="Apple-style-span" face="Arial">=</font></span><font class="Apple-style-span" face="Arial"> </font><span class="n"><font class="Apple-style-span" face="Arial">data</font></span><span class="o"><font class="Apple-style-span" face="Arial">.</font></span><span class="n"><font class="Apple-style-span" face="Arial">get_field_parameter</font></span><span class="p"><font class="Apple-style-span" face="Arial">(</font></span><span class="s"><font class="Apple-style-span" face="Arial">"center"</font></span><span class="p"><font class="Apple-style-span" face="Arial">)</font></span></pre><pre><span class="p"><font class="Apple-style-span" face="Arial"><br></font></span></pre><pre><span class="p"><font class="Apple-style-span" face="Arial">I can get around this by making the parameters I need global variables, I just wondered if there was a way to pass field variables to this routine?</font></span></pre></div><div><font class="Apple-style-span" face="Arial"><br></font></div><div><font class="Apple-style-span" face="Arial">Elizabeth</font></div><div><br></div><div><br></div><div><br><div><div>On Oct 20, 2011, at 6:05 PM, Geoffrey So wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">I wasn't able to reproduce your error. Is "NegEscapeVelocity" a derived field, and do you have the same problem if you test it out on "Density" ?<div><br></div><div>From</div><div>G.S.</div><div><br>
<div class="gmail_quote">On Thu, Oct 20, 2011 at 1:32 AM, Elizabeth Tasker <span dir="ltr"><<a href="mailto:tasker@astro1.sci.hokudai.ac.jp">tasker@astro1.sci.hokudai.ac.jp</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hi,<br>
<br>
Is there a way of passing field parameters to extract_connected_sets?<br>
<br>
Currently,<br>
<br>
print dd["NegEscapeVelocity"]<br>
<br>
works fine but<br>
<br>
contours = dd.extract_connected_sets("NegEscapeVelocity", 1, 30.0, maxv, log_space=False)<br>
<br>
complains it can't find the set field variables.<br>
<br>
Elizabeth<br>
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