<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div><br></div>Hi Matt,<div><br></div><div> The output looks right. What happens if you run the bfield2root utility? This should</div><div>be built as part of the default sim-recon build. (Source is in $HALLD_HOME/src/programs/Utilities/bfield2root)</div><div><br></div><div>Draw the field map in ROOT using:</div><div><br></div><div><div style="margin: 0px; font-size: 10px; font-family: Monaco;">>bfield2root</div><div style="margin: 0px; font-size: 10px; font-family: Monaco;">>root bfield.root</div><div style="margin: 0px; font-size: 10px; font-family: Monaco;">root [1] Bz_vs_r_vs_z->Draw<span style="color: #72c271">(</span>"colz"<span style="color: #72c271">)</span></div></div><div><br></div><div>Also, how are you checking that the field map is returning zeros?</div><div><br></div><div>Regards,</div><div>-David</div><div><br><div><div>On Jul 17, 2014, at 9:49 PM, Matthew Shepherd <<a href="mailto:mashephe@indiana.edu">mashephe@indiana.edu</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><br>Hi all,<br><br>Paul and I have been trying to understand why I cannot<br>get the example analysis software working and we seem<br>to have traced the problem down to the fact that the <br>magnetic field map is returning a zero field.<br><br>Does anyone know how to debug this? The startup<br>of the job suggests all is OK (I think):<br><br>JANA >>URL: <a href="sqlite:////home/s4/mashephe/gluex/ccdb.sqlite">sqlite:////home/s4/mashephe/gluex/ccdb.sqlite</a><br>JANA >>context: default<br>JANA >>Reading Magnetic field map from Magnets/Solenoid/solenoid_1350_poisson_20<br>130925 ...<br> Nx=251 Ny=1 Nz=43 ) at 0x7f46720a0ce0<br>Fine-mesh evio file does not exist.<br>Constructing the fine-mesh B-field map...<br> rmin: 0 rmax: 88.5 dr: 0.1 zmin: 0 zmax: 600 dz: 0.1vg.: 0.0Hz) <br> Number of points in z = 6000<br> Number of points in r = 885<br>JANA >>10599 entries found (Created Magnetic field map of type DMagneticFieldMap<br><br>I'm using:<br><br>sim-recon-2014-06-30<br>ccdb_1.02<br>hdds-2.1<br>jana_0.7.1p3<br><br>and a ccdb.sqlite file from July 14 (copied from Mark's web page link that day). I've also<br>tried the ccdb.sqlite file from dc2 conditions.<br><br>Matt<br><br><br>---------------------------------------------------------------------<br>Matthew Shepherd, Associate Professor<br>Department of Physics, Indiana University, Swain West 265<br>727 East Third Street, Bloomington, IN 47405<br><br>Office Phone: +1 812 856 5808<br><br><br>_______________________________________________<br>Halld-offline mailing list<br><a href="mailto:Halld-offline@jlab.org">Halld-offline@jlab.org</a><br>https://mailman.jlab.org/mailman/listinfo/halld-offline<br></blockquote></div><br></div></body></html>