Dear all,
I want to output matter power spectrum for latter interpolation.
How to change the number of data points of matter power spectrum to that I want ?
And How can I know the accuracy of the data and how to control it?
Thanks a lot !
camb: number of data points of matter power spectrum and its accuracy
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- Affiliation: NAOC
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Re: camb: number of data points of matter power spectrum an
Set transfer_k_per_logint in the .ini file.
Zero is a default spacing which is quite good, though may not be accurate to better than 0.3%; increase it to get it more accurate.
(and transfer_interp_matterpower =F, as noted in the .ini if you want to interpolate later)
Zero is a default spacing which is quite good, though may not be accurate to better than 0.3%; increase it to get it more accurate.
(and transfer_interp_matterpower =F, as noted in the .ini if you want to interpolate later)
-
- Posts: 9
- Joined: September 06 2013
- Affiliation: NAOC
camb: number of data points of matter power spectrum and it
Thank you very much.
What accuracy is 0.3% ? the accuracy of interpolation or just that of each data point ?
What does is mean if it is the accuracy of interpolation, because the accuracy of interpolation depends on the method of interpolation.
How to increase the accuracy of each data point calculated from camb ,please ?
The accuracy of each data point is very important to me because I need to calculate the derivative of matter power spectrum to cosmological parameters !!
Thanks again !
What accuracy is 0.3% ? the accuracy of interpolation or just that of each data point ?
What does is mean if it is the accuracy of interpolation, because the accuracy of interpolation depends on the method of interpolation.
How to increase the accuracy of each data point calculated from camb ,please ?
The accuracy of each data point is very important to me because I need to calculate the derivative of matter power spectrum to cosmological parameters !!
Thanks again !