Selected DIPSO tools

readxy, file, x, y

write a simple ASCII file containing pairs of x and y values.

writexy, file, x, y

write a simple ASCII file containing pairs of x and y values.

sp2wr, file, x, y, header

write a file containing pairs of x and y values in Spectrum format 2, including a header.

sp2rd, file, x, y, header

read a file containing pairs of x and y values in Spectrum format 2, including a header.

qqsm ( x, y, sigma )

Apply a Gaussian smoothing function to uniformly spaced data

rxr, x, y, x1, x2

modify a dataset containing pairs of x,y values such that no data fall outside the interval x1 < x < x2.

ryr, x, y, y1, y2

modify a dataset containing pairs of x,y values such that no data fall outside the interval y1 < y < y2.

resample, x, y, x1, x2, dx

Resample a function y(x) onto a uniform grid of stepsize dx between x1 and x2.

xcorr, x1, y1, x2, y2, ccfx, ccfy

Compute cross-correlation function for functions y1(x1) and y2(x2) The result is returned as ccfy(ccfx)

vcorr, w, f, v, mode

Apply a velocity correction to a wavelength array. v is in units of the speed of light.