Stierhof at 18:48, 17 March 2021

2021-03-17T18:48:04Z

Stierhof: Created page with "In case you want to combine several rebinning schemes one can proceed as follows: rebin_data(id, 0); % reset all binning lo = get_data(id).bin_lo;..."

2021-02-12T14:18:50Z

Created page with "In case you want to combine several rebinning schemes one can proceed as follows: <syntaxhighlight lang="c"> rebin_data(id, 0); % reset all binning lo = get_data(id).bin_lo;..."

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In case you want to combine several rebinning schemes one can proceed as follows:

<syntaxhighlight lang="c">
rebin_data(id, 0); % reset all binning
lo = get_data(id).bin_lo; % data grid
w = where(lo>_A(50), &nw); % get where grid is larger than 50keV and complement
rebin_data(id, 10); % rebin to at least 10 counts per bin
min10 = get_data_info(id).rebin; % store the binning
rebin_dataset_optimal(id); % rebin optimal
opt = get_data_info(id).rebin; % store binning
rebin_data(id, [opt[nw],sign(opt[-1]*min10[0])*min10[w]]); % set binning, connection region should have 10 or more counts this way
</syntaxhighlight>

In this case rebin_dataset_optimal is used together with the 'standard' rebinning to at least n counts per bin. It is to say that rebin_dataset_optimal uses a numerically optimized way to reduce data size vs data loss and should *not* be changed for analyses purposes. But, e.g., for plotting the resulting spectrum might not look nice.
Note also that this only works for schemes and data that where not rebinned on a new grid. In that case the original binning can not be restored.

[[Category:Isis / Slang]]

@@ Line 3: / Line 3: @@
 <syntaxhighlight lang="c">
 rebin_data(id, 0); % reset all binning
-lo = get_data(id).bin_lo; % data grid
+lo = get_rmf_data_grid(get_data_info(id).rmfs[0]).bin_lo; % get original data grid
-w = where(lo>_A(50), &nw); % get where grid is larger than 50keV and complement
+w = where(lo>_A(50), &nw); % get where grid is larger than 50keV and complement, ATTENTION: do not apply _A() to 'lo', this will change the order
 rebin_data(id, 10); % rebin to at least 10 counts per bin
 min10 = get_data_info(id).rebin; % store the binning
 rebin_dataset_optimal(id); % rebin optimal
 opt = get_data_info(id).rebin; % store binning
-rebin_data(id, [opt[nw],sign(opt[-1]*min10[0])*min10[w]]); % set binning, connection region should have 10 or more counts this way
+% set combined binning, the array has to be in angstrom grid so pay attention to the ordering
 </syntaxhighlight>

Combine rebinning schemes - Revision history

Stierhof at 18:48, 17 March 2021

Stierhof: Created page with "In case you want to combine several rebinning schemes one can proceed as follows: rebin_data(id, 0); % reset all binning lo = get_data(id).bin_lo;..."