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Here you can find some of my IDL (Interactive Data Language) programmes.

julian_date.pro
Returns the Julian date for a given calendar date (year, month, day and optionally hour, minute and second).

calendar_date.pro
Returns the calendar date for a given Julian date.

dot_product.pro
Computes the dot product (= scalar product) of two vectors or arrays of vectors.

cross_product.pro
Computes the cross product of two 3-component vectors or arrays of 3-component vectors.

natural_constants.pro
Returns a structure containing the values of some natural constants in SI units.

log_variables.pro
Creates a log of variables (their names and current values).
Hintergrundbild: Io. NASA/JPL/University of Arizona.