(i) add PRINT_LEVEL to the command block (0='nothing' to
3='everything'). This allows to tune the Minuit2 output. (ii) added the possibilty to give the fit range in bins. For details see the docu.
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<dt> xy-data (fit type 8) </dt><dd> Specification of the data from an ASCII or DB file which should be used as <i>x</i> and <i>y</i> data (in this order). For a simple ASCII file the column numbers are used, in the case of a DB file one can either specify the variable numbers or the name of the variables as given in the DB header.
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</dd></dl>
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<p></p> <dl>
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<dt> fit </dt><dd> The range of data that should be considered when the fitting is done. For the μSR fit types <strong>0</strong>, <strong>2</strong>, and <strong>4</strong> here the starting and end times are given in microseconds. For the non-μSR fit type <strong>8</strong> the starting and end points of the fitting range are given in the units of the <i>x</i> data.<br><span class='foswikiRedFG'>In case the fit range specified here is larger than the <a href="#DataRange" class="foswikiCurrentTopicLink">data range</a> (in any direction), eventually the <a href="#DataRange" class="foswikiCurrentTopicLink">data range</a> will be used as fit range.</span>
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<dt> fit </dt><dd> The range of data that should be considered when the fitting is done. For the μSR fit types <strong>0</strong>, <strong>2</strong>, and <strong>4</strong> here the starting and end times are given in microseconds. For the non-μSR fit type <strong>8</strong> the starting and end points of the fitting range are given in the units of the <i>x</i> data.<br><span class='foswikiRedFG'>In case the fit range specified here is larger than the <a href="#DataRange" class="foswikiCurrentTopicLink">data range</a> (in any direction), eventually the <a href="#DataRange" class="foswikiCurrentTopicLink">data range</a> will be used as fit range.</span> An example for a μSR fit:<pre>
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fit 0.2 8.5
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</pre>Which means that the fitting window will span from 0.2 to 8.5 microseconds.<br> Another possibility for the μSR fits is to give the fit range in bins, rather than time. The syntax is then: <pre>fit fgb+<n0> lgb-<n1>,</pre> where <strong>fgb</strong> and <strong>lgb</strong> are label tags which refer to the 'first good bin' and the 'last good bin' defined either in the <code><b>data</b></code> tag of the run block, data file, are estimated based on T0. <n0> and <n1> are offsets (given in bins) allowing to change the fit window compared to the data window. An example: <pre>fit fgb+150 lgb-1332</pre>
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</dd></dl>
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<p></p> <dl>
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<dt> packing </dt><dd> Number of data channels to be binned together. For the non-μSR fit type <strong>8</strong> the binning is supposed to be 1.
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@@ -956,6 +956,8 @@ It is important to understand that before <strong>MINOS</strong> is called, all
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<p></p>
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For even more complex fitting the additional command <strong>FIT_RANGE RESET | <i>t</i><sub>start</sub> <i>t</i><sub>end</sub> | <i>t</i><sub>s1</sub> <i>t</i><sub>e1</sub> <i>t</i><sub>s2</sub> <i>t</i><sub>e2</sub> ... <i>t</i><sub>s<i>n</i></sub> <i>t</i><sub>e<i>n</i></sub></strong> is provided. It allows to change the fit range during different iterations. The command <strong>FIT_RANGE <i>t</i><sub>start</sub> <i>t</i><sub>end</sub></strong> changes the current fit range for <code>all</code> the runs present in the msr file. <strong>FIT_RANGE RESET</strong> will restore to the original fit ranges as provided in the <a href="#TheRunBlock" class="foswikiCurrentTopicLink">RUN block</a>. If for each run of the msr file an individual fit range should be used, the third option applies. Here <strong><i>n</i></strong> has to correspond to the number of runs in the RUN block.
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<p></p>
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As for the run block, there is a 2nd flavor how the <strong>FIT_RANGE</strong> can be changed, namely giving the fit range in bins, i.e. <strong>FIT_RANGE RESET | fgb+<n0> lgb-<n1> | fgb+<n00> lgb-<n01> fgb+<n10> lgb-<n11> ... fgb+<nN0> lgb-<nN1></strong> where <strong>N</strong> is the number of available run blocks. The idea is inline with the above syntax and the syntax describe for the fit range (<strong>fit</strong>) of the <a href="#TheRunBlock" class="foswikiCurrentTopicLink">RUN block</a>.
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<p></p>
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A typical example could look like:<pre>
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COMMANDS
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FIT_RANGE 0.0 0.8
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@@ -964,6 +966,15 @@ A typical example could look like:<pre>
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MINIMIZE
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MINOS
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SAVE
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</pre> or
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<pre>
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COMMANDS
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FIT_RANGE fgb+15 lgb-1332 fgb+17 lgb-1330
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MINIMIZE
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FIT_RANGE RESET
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MINIMIZE
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MINOS
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SAVE
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</pre>
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</div></div><div class="patternInfo"><span class="patternRevInfo">Topic revision: 04 Jul 2012, <a href="https://intranet.psi.ch/Main/AndreasSuter">AndreasSuter</a></span></div>
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</div></div><div class="patternInfo"><span class="patternRevInfo">Topic revision: 25 Oct 2012, <a href="https://intranet.psi.ch/Main/AndreasSuter">AndreasSuter</a></span></div>
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