SUV Tools

Visit the project homepage https://pranabdas.github.io/suvtools/

Quick start

Install latest stable release:

pip install --upgrade suvtools

Import suvtools into your project:

import suvtools as suv

Modules:

• suv.load("datafile.txt", scan=None): It will return a two dimensional array with columns for various parameters. If the second argument, i.e., the scan number is not specified, the code will read the last scan from the file.

• suv.fit_gauss(x, y, a=None, x0=None, sigma=None, xmin=None, xmax=None, num=1000): returns x, Gaussian fitted y values, and prints out relevant parameters. xmin and xmax determines the range to fit. If xmin and xmax are not provided, whole range is used. num determines the number of points returned in x_fit and y_fit.

• suv.fit_lorentz(x, y, a=None, x0=None, gamma=None, xmin=None, xmax=None, num=1000): returns x, Lorentzian fitted y values, and prints out relevant parameters. xmin and xmax determines the range to fit. If xmin and xmax are not provided, whole range is used. num determines the number of points returned in x_fit and y_fit.

• suv.save_csv("datafile.txt", csvname=None, scan=None): saves scan to a csv file. The file will be saved in the save directory as datafile with name datafile.csv unless csvname is specified. Like the load module, if the scan number is not specified, it will read the last scan from the file.

• suv.norm_bg(energy, intensity, x1, x2, x_norm_loc=None): Removes linear background, and normalizes the data. x1, x2 are energy values that determines the slope of the background. By default the normalization done at the tail point of the spectra. It can be changed to other point, enter the corresponding energy value. The intention is to normalize at an energy value away from the peaks/features of interest.

• suv.lock_peak(data, refdata, x1=None, x2=None, E_col=0, I_col=9, I0_col=4): Locks peak position with respect to the reference data. It locks the maximum of intensity to the same energy; the range of peak search can be specified by input x1 and x2. If no bounds are given, it will find the maximum in the whole data range.

• suv.calc_area(y, x, x_start=None, x_end=None): Calculates area under the curve for given x and y values. x_start and x_end can be specified to set the limit of integration region, if not provided whole range is integrated.

See the notebook and documentation for example usage.

Python tests

python3 -m unittest discover tests