Re: simultaneous fitting

Hey,

Thanks for the reply.

First to make things a little more clear. All the combining is done in one 
script and then a fitting script is run. To that end, this is what I'm curious 
about. From what I understand, once I combine two data sets into one, there is 
only 1 piece of information now and that is what I want to fit. If that is the 
case why would I have to specify wavelength ranges for both sets of data if 
they are already combined?


On a secondary note, I think there is an issue with my script to combine 
datasets. If I run the same script using counts everything is fine and I get 
what I would expect. However, if i run the script with flux, something strange 
is happening. If I plot the plus and minus orders before I combine them, then 
they look fine. But, if I plot the plus and minus orders after I combine, one 
of them is fine and the other is empty (horizontal line at 0). I'm sure this 
is affecting my fit, but honestly I don't know what the problem is. For 
brevity, I'll just write the combining part of the code below:

variable h1_id;
variable heg1,weights;

weights=[0.5,0.5];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


match_dataset_grids (1,2);
h1_id = combine_datasets (1,2,weights);

heg1=get_combined (h1_id, &get_data_flux);

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

xrange(1.0,10.0);
variable yname = latex2pg("Flux [Photons/s/cm^{2}/bin]");
open_plot,3;
hplot(heg1);

If you see any obvious errors here let me know.

Thanks,
Bert


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