Documentation for /eve_analysis/ssw/ssw/sdo/eve/idl/

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.pro files

esp_calc_pointing.pro

Calculate ESP pointing in alpha/beta and heliocentric latitude and longitude.

esp_quad_to_ab.pro

Calculate solar angles alpha and beta from EVE ESP quadrant data

eve_affine_matrix.pro

Do an affine transformation on an image, specified by an affine matrix

eve_average_no_fill.pro

Take the average (or averages) of a series of nonzero finite numbers.

eve_download_data.pro

This function downloads all SDO EVE data products of a specified type for the specified 7-digit year and day of year.

eve_get_cross_sections.pro

Read molecular cross section table needed to calculate "Stan bands"

eve_get_data.pro

Get EVE Level 2 or Level 3 data from the EVE website

eve_get_wave_bin.pro

Given a wavelength, find the index of the wave array which is closestto it.

eve_integrate_band.pro

Integrate the the irradiance over a given bandpass.

eve_integrate_line.pro

Integrate an irradiance from wave_min to wave_max, using the MEGS-A, MEGS-B,or Level 2 wavelength scale

eve_integrate_line_wave.pro

Integrate an irradiance from wave_min to wave_max, using an arbitrarywavelength scale

eve_jd_to_yd.pro
eve_merge_evl.pro

Merge EVE Level 2 Lines files into one long EVE record, optionally averagingconsecutive measurements

eve_merge_evs.pro

Merge EVE Level 2 spectrum files into one long EVE record, optionally averagingconsecutive spectra

eve_next_yyyydoy.pro

Find the next year/day of year after the input parameter, properly taking intoaccount leap years, year boundary wraparound, and so forth

eve_ph2watt.pro

NAME: ph2watt PURPOSE: return irradiance in watts/m^2/nm given photons/cm^2/sec CATEGORY: web CALLING SEQUENCE: ph2watt INPUTS: wave - array of wavelengths in nm irr_ph - array of irradiances in photons/cm^2/sec OUTPUTS: irr_w - array of irradiances in watts/m^2/nm COMMON BLOCKS: none MODIFICATION HISTORY: 02-17-03 DLW Original file creation.

eve_physical_constant.pro

Physical constants lookup function.

eve_prev_yyyydoy.pro

Determine previous day in yyyydoy format that correctly accounts for year boundaries including leap years.

eve_process_spectrum.pro

Convenience function to call a user function on a bunch of spectra and gather its results.

eve_quadratic_formula.pro

Finds the real roots of the quadratic equation a*x^2+b*x+c=0

eve_range.pro

Generate Linear array covering a range of values

eve_read_dat.pro

generic file reading routine for general ASCII mode data files

eve_read_l0c_spectra.pro

Reads an ASCII level 0C file and returns an array of structures.

eve_read_l0cs.pro

Reads an ASCII level 0CS file and returns an array of structures

eve_read_whole_fits.pro

Read all of the HDUs in a FITS file, creating a merged set of structures for the data, and string arrays for the keywords.

eve_sam_rotate.pro
eve_sun_almanac.pro

Low precision formulas for the Sun's coordinates and the equation of timeFrom 2002 Astronomical Almanac, p.

eve_watt2ph.pro

NAME: ph2watt PURPOSE: return irradiance in watts/m^2/nm given photons/cm^2/sec CATEGORY: web CALLING SEQUENCE: ph2watt INPUTS: wave - array of wavelengths in nm irr_ph - array of irradiances in photons/cm^2/sec OUTPUTS: irr_w - array of irradiances in watts/m^2/nm COMMON BLOCKS: none MODIFICATION HISTORY: 02-17-03 DLW Original file creation.

eve_wget.pro

Gets a file from the Internet and writes it in a given location on the local machine.

eve_yd_to_jd.pro
megs_wave_defines.pro
sam_ab_to_ll.pro

Given a time, alpha angle, and beta angle from the center of the solar disk,calculate the corresponding heliocentric latitude and longitude.

sam_com.pro

Given a MEGS-A image, find the center of mass of the SAM portion of it:Params: img: in, required A MEGS-A image, in its normal orientation, of size [2048,1024]:Returns::private-file:

sam_ll_to_ab.pro

Given a time, heliocentric latitude and longitude of point on Sun,calculate the corresponding alpha angle, and beta angle from the center of the solar disk.

sam_pix_to_ab.pro
stan_bands.pro

Given a spectrum and wavelength scale, calculate the "Stan bands"

stan_spwx.pro

Generate a text file space weather report in a form similar to that of EVE Level 0CS.

stan_spwx_hhmm.pro

Example routine demonstrating the routines eve_merge_evs(), stan_bands(), and eve_process_spectrum().

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