Update this file with the 'makeindex' command. Do not edit directly. General help topics: ------------------- Functions and commands: ---------------------- abs Returns the absolute value of its argument acos Trig arc cosine - returns radians asin Trig arc sine - returns radians atan Trig arc tangent - returns radians atan2 Returns polar angle in radians correl Return the Pearson correlation coefficient between two arrays cos Trig cosine(x) exp Returns e raised to the power of its argument fit_line Perform a (weighted) least squares line fit fold Fold one array into a given period and arrange other arrays to same order fourier Decompose an array of data into its Fourier series coefficients fsval Return the Fourier series value at a given x-value gauss_rand Returns a random number from a gaussian distribution grid Linearly interpolate an array onto a regular grid hartley Returns the Hartley transform of a 2-D data array int Returns the integer part of a floating point number. ln Natural logarithm log Logarithm in base 10 max Returns the maximum value in the arguments mean Returns the mean of the elements in an array median Return the median value of an array min Returns the minimum value in the arguments minmax Returns the min/max values and positions in an array mod Returns the remainder after division nint Returns the integer nearest to a given floating point number. ramp Returns a 1-D ramp of values real (No help file) rms Returns the standard deviation of the elements in an array seed_rand Re-seed the random number generator sin Trig sine(x) smooth Returns a smoothed version of a 2-D array sort Sort an index array and rearrange other arrays into the same order. sqrt Square root sum Returns the sum of the elements in an array tan Trig tangent(x) transpose Return a transposed version of a data array trap_int Return the integral array of a data array via trapezium integration uniform_rand Returns a random number from a uniform distribution