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<div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">
Hey Britton,</div>
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<div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">
Thanks; that works! Too bad it’s for just a container and not the whole dataset, but good enough :-)</div>
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<div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">
—Molly</div>
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<p class="airmail_on">On August 1, 2016 at 11:44:29 AM, Britton Smith (<a href="mailto:brittonsmith@gmail.com">brittonsmith@gmail.com</a>) wrote:</p>
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<div dir="ltr">Hi Molly,
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<div>If you have some data container, like a sphere, I think what you need to do is:</div>
<div>sphere.set_field_parameter("omega_baryon", 0.048)</div>
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<div>Britton</div>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Aug 1, 2016 at 5:42 PM, Molly Peeples <span dir="ltr">
<<a href="mailto:molly@stsci.edu" target="_blank">molly@stsci.edu</a>></span> wrote:<br>
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<div style="word-wrap:break-word">Hi folks,
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<div>I have a dataset I’d like to add omega_baryon to (I want to use the baryon_overdensity derived field, but it seems to only have omega_matter and omega_lambda, but I know what omega_baryon is). It’s not a derived field; it’s just a number (not sure what
the yt-lingo for it is!)…</div>
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<div>I tried doing ds.omega_baryon = 0.048, but I still get</div>
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<p style="margin:0px;font-size:10px;font-family:Monaco;color:rgb(52,189,38);background-color:rgb(0,0,0)">
/Users/molly/anaconda2/envs/astroconda/lib/python2.7/site-packages/yt/fields/derived_field.pyc
<span style="color:#f5f5f5">in</span> <span style="color:#34bbc7">__call__</span><span style="color:#5330e1">(self, data)</span></p>
<p style="margin:0px;font-size:10px;font-family:Monaco;color:rgb(245,245,245);background-color:rgb(0,0,0)">
<span style="color:#2de621"> 277</span> doesnt_have<span style="color:#5330e1">.</span>append<span style="color:#5330e1">(</span>p<span style="color:#5330e1">)</span></p>
<p style="margin:0px;font-size:10px;font-family:Monaco;color:rgb(245,245,245);background-color:rgb(0,0,0)">
<span style="color:#2de621"> 278</span> <span style="color:#34bd26">if</span> len<span style="color:#5330e1">(</span>doesnt_have<span style="color:#5330e1">)</span>
<span style="color:#5330e1">></span> <span style="color:#34bbc7">0</span><span style="color:#5330e1">:</span></p>
<p style="margin:0px;font-size:10px;font-family:Monaco;color:rgb(245,245,245);background-color:rgb(0,0,0)">
<span style="color:#34bd26">--> 279</span> <span style="color:#c33720"> </span>
<span style="color:#34bd26">raise</span> NeedsParameter<span style="color:#5330e1">(</span>doesnt_have<span style="color:#5330e1">)</span></p>
<p style="margin:0px;font-size:10px;font-family:Monaco;color:rgb(245,245,245);background-color:rgb(0,0,0)">
<span style="color:#2de621"> 280</span> <span style="color:#34bd26">return</span> True</p>
<p style="margin:0px;font-size:10px;font-family:Monaco;color:rgb(45,230,33);background-color:rgb(0,0,0)">
281<span style="color:#f5f5f5"> </span></p>
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<p style="margin:0px;font-size:10px;font-family:Monaco;color:rgb(245,245,245);background-color:rgb(0,0,0)">
<span style="color:#c33720">NeedsParameter</span>: (['omega_baryon'])</p>
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<div>when I try to plot using baryon_overdensity. Suggestions?</div>
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<div>Thanks,</div>
<div>—Molly</div>
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