contents.txt

basic median filter simulation

PENT() - Return the information entropy S of time-series data for a set of trial periods
POIDEV() - Generate a Poisson random deviate 
POLINT - Polynomial interpolation of an (X,Y) pair 
POLYLEG() - Evaluate a Legendre polynomial with specified coefficients
POLY_SMOOTH() - Apply a least-squares (Savitzky-Golay) polynomial smoothing filter
PRIME - Return the first N primes (in /jhuapl)
PROB_KS - Return the significance of a Kolmogorov-Smirnov statistic
PROB_KUIPER - Return the significance of the Kuiper statistic 
QSIMP - Integrate using Simpson's rule to specified accuracy
QTRAP - Integrate using trapezoidal rule to specified accuracy.  
QUADTERP - Quadratic interpolation of X,Y vectors onto a new X grid
RANDOMCHI - Generate chi-square distributed random variables
RANDOMDIR - Generate Dirichlet-distributed random variables
RANDOMGAM - Generate random numbers from a gamma distribution.
RANDOMP - Create a vector of random numbers distributed as a power-law
RANDOMWISH - Draw random matrices from a Wishart distribution
SIXLIN - Compute linear regression by 6 different methods.
SPLINE_SMOOTH - Compute cubic smoothing spline to (weighted) data
TABINV - Find the effective index of a function value.                          
TRANSFORM_COEFF - Compute new polynomial coefficients under a linear transformation
TRAPZD - Compute Nth iteration of trapezoidal rule.  Called by QSIMP, QTRAP
TSC - Triangular Shaped Cloud interpolation of irregularly gridded data onto a regular grid
TSUM() - Trapezoidal integration of the area under a curve
ZBRENT() - Find the root of a function known to lie between specified limits

----------------------------------------------------------------------------
Plotting Procedures    in pro/plot
------------
------------
CLEANPLOT - Reset all plotting system variables to their default (X) values
LEGEND - Create an annotation legend for a plot
LEGENDTEST - Demo program demonstrating the capabilities of LEGEND
LINEID_PLOT - Annotate the identified lines in a spectrum
MULTIPLOT - Create multiple plots with shared axes
OPLOTERROR - Overplot Y vs. X with optional X and Y error bars
PARTVELVEC - Plot the velocity vectors of a set of particles
PLOTERROR - Plot Y vs. X with optional X and Y error bars
PLOTHIST - Plot the histogram of an array
PLOTSYM - Define useful plotting symbols not in the standard PSYM definition
RDPLOT - Like intrinsic CURSOR procedure but with a full-screen cursor
SUNSYMBOL() - Return the character string to plot a subscripted Sun symbol
VSYM - Create "Mongo"-like plotting symbols, rotationally symmetric polygons

----------------------------------------------------------------------------
Robust Statistics procedures    in pro/robust
___________
-----------
AUTOHIST  - Draw a histogram using automatic bin-sizing.
BIWEIGHT_MEAN()  -  Iterative biweighted determination of mean and standard deviation
HISTOGAUSS  -  Outlier-resistant autoscaled histogram drawing
MEDSMOOTH() - Median smoothing including the points at the ends
RESISTANT_MEAN -  Outlier-resistant determination of  mean and std. deviation.
ROB_CHECKFIT() - Utility to determine quality of a fit and return biweights
ROBUST_LINEFIT() - Robust fit of Y vs X (or bisector of Y vs X and X vs Y)
ROBUST_POLY_FIT() - Robust polynomial fit
ROBUST_SIGMA()  -   Robust analog of the standard deviation
----------------------------------------------------------------------------
IDL Structure procedures    in pro/structure
___________
-----------
COMPARE_STRUCT() - Compare all matching Tag names and return differences
COPY_STRUCT - Copy Fields with matching Tag names from one structure to another
CREATE_STRUCT - Create an IDL structure from a list of tag types and dimensions
MRD_STRUCT() - Like CREATE_STRUCT but tag values can be specified in a string
N_STRUCT() - Return number of elements in a structure array and number of tags
PRINT_STRUCT - Print specified tags from structure (to LUN if given)
TAG_EXIST() - Determine if a tag exists in a given structure
WHERE_TAG() - Like WHERE but works on a structure tag names

----------------------------------------------------------------------------
STSDAS (Binary) Table I/O    in pro/sdas_table
____________
------------
TAB_ADDCOL  - Add a new column to a STSDAS table
TAB_COL - Extract column info from a table control block.  Called by TAB_READ
TAB_CREATE - Create an empty STSDAS table on disk
TAB_DEL  - Delete specified row(s) from an STSDAS table
TAB_EXPAND - Expand the size of an STSDAS table.  Called by TABLE_APPEND
TAB_FORTOSPP - Convert a FORTRAN print format to SPP. Called by TAB_MODCOL
TAB_MODCOL - Modify a column name, format or units in an STSDAS table.
TAB_NULL() - Locate null values in a STSDAS table.  Called by TAB_PUT
TAB_NULLROW - Place null values into a STSDAS table.  Called by TAB_PUT
TAB_PRINT - Print the contents of an STSDAS table in tabular form
TAB_PUT - Put new values into a column of an STSDAS table
TAB_READ - Read table control block and data array from a disk STSDAS table. 
TAB_SIZE - Return the size of a STSDAS table.  Called by TABLE_LIST
TAB_SORT - Sort a STSDAS table according to the specified column
TAB_SPPTOFOR - Convert SPP print format to FORTRAN.  Called by TAB_PRINT
TAB_VAL() - Extract values from a single column of an STSDAS table
TAB_WRITE - Write a STSDAS table to a disk file
TABLE_APPEND - Append a list of STSDAS tables to create a single table.
TABLE_CALC - Add a new table column from an expression using existing columns.
TABLE_DELETE - Delete specified rows from an STSDAS table
TABLE_EXT - Extract column(s) of data from an STSDAS table to IDL variable(s)
TABLE_HELP  - Describe an STSDAS table.
TABLE_LIST  - List the contents of an STSDAS table
TABLE_PRINT - Print a disk STSDAS table in tabular form
TABLE_SORT  - Order the contents of an STSDAS table by the specified column
----------------------------------------------------------------------------
Web Socket Procedures                    in pro/sockets                   
___________
-----------
WEBGET() - Use the IDL SOCKET procedure to get data from http servers
QUERYGSC() - Query the Guide Star Catalog (GSC V2.3.2) at STScI by position  
QUERYDSS - Query the digital sky survey (DSS) online at the ESO or STSCI servers
QUERYSIMBAD - Query the SIMBAD or NED name resolver to obtain J2000 coordinates
QUERYVIZIER() - Positional query of any catalog in the VIZIER database.

----------------------------------------------------------------------------
TV Display Procedures                    in pro/tv                   
___________
-----------
BLINK - Blink two or more windows in an image display
CURS - Change the shape of the (X windows only) cursor
CURVAL - Interactive display of image intensities and astronomical coordinates
PIXCOLOR - Set specified pixel values to a specified color
SIGRANGE() - Find range of pixel values which contain 90% of the image values
TVBOX - Draw a box of specified size on the image display
TVCIRCLE - Draw a circle of specified radius on the image display
TVELLIPSE - Draw an ellipse of specified axes on the image display
TVLASER - Write an image to postscript file with annotation from a FITS header
TVLIST - Display intensity values surrounding the cursor position
UNZOOM_XY - Convert from window coordinates to image coordinates
ZOOM_XY - Convert from image coordinates to window coordinates

-----------------------------------------------------------------------------
Miscellaneous (Non-Astronomy) Procedures         in pro/misc
________
--------
ASTROLIB - Add the non-standard system variables used in the IDL Astronomy User's Library
BLKSHIFT - Shift a block of data to a new (possibly overlapping) position in a 
          file
BOOST_ARRAY - Append one array onto another, adjusting dimensions if necessary
BREAK_PATH() - break up a !PATH-like string into individual directories
BSORT() - Like the IDL SORT function but subscript order is maintained when
        value are equal -- like a bubble sort.
CHECKSUM32 - Compute the 32bit checksum of an array (ones-complement arithmetic)
CIRRANGE - Force an angle to be in the range 0 to 360 (or 0 to 2*!PI).
CONCAT_DIR - concatenate directory and file name for current OS
DELVARX - Delete an IDL variable; like DELVAR but works at any calling level
DETABIFY() - Replace tabs in a character string by equivalent number of spaces
EXPAND_TILDE() - Expand tilde in UNIX directory names
F_FORMAT() - Find the "best" F format to display an array of REAL*4 numbers.
FDECOMP - Decompose a file name (Disk + Directory + Name + Extension + Version)
FINDPRO - Find all occurrences of a procedure in one's !PATH
FIND_ALL_DIR - Find all directories under a specified directory
FIND_WITH_DEF - Search for files with default path and extension
FORPRINT -Print a set of vectors by looping over each index value
GETOPT() -  Parse a user supplied string into numeric value(s).
GETPRO -  Search !PATH directory for a procedure and copy into user's directory
GETTOK() -  Extract a string up to a specified character.
GETWRD() -  Get specified item (word) from a string (in /jhuapl)
HGREP - Find a substring in a FITS header or other string array
HOST_TO_IEEE - Convert IDL variable from host machine bit order to IEEE
HPRINT -  Pretty terminal display of a FITS header (or other string array)
IDL_VALIDNAME - Emulate intrinsic IDL_VALIDNAME() function for V5.6 and earlier
IEEE_TO_HOST - Convert IDL variable from IEEE bit order to host machine
ISARRAY() - Determine if an IDL variable is an array (in /jhuapl)
IS_IEEE_BIG() - Determine if the host machine is IEEE big endian 
LIST_WITH_PATH() - Search for files within specified directory path
MAKE_2D - Change from 1-D indexing to 2-D indexing
MATCH -   Find the subscripts where the values of two vectors match.
MATCH2 -  Find the matches for each element of two arrays.
MRD_SKIP - Skip a number of bytes from current location in a file or a Unix pipe
MINMAX() -  Return the min and max of an array in an 2 element vector
N_BYTES() - Return the number of bytes in an IDL variable
NINT() - Like intrinsic ROUND() function but returns integer instead of long
NULLTRIM() -Delete all characters after, and including, the the first null
          byte(0).  Called by TAB_PUT.
ONE_ARROW - Draw an arrow labeled with a single character
ONE_RAY - Draw a ray by specifying starting point, angle, and length
ORDINAL() - Return the English equivalent of ordinal numbers, i.e. '1st','2nd'
POLREC - Convert from polar to rectangular coordinates (in /jhuapl)
QGET_STRING() - Read a string (eg. password) from the keyboard without echoing it
RDFLOAT - Quickly read an ASCII file with columns of data into IDL vectors
READCOL - Read a file of free-format  ASCII columns into IDL vectors
READFMT - Quickly read a file of fixed-format ASCII columns into IDL vectors
READ_KEY() - Like GET_KBRD but returns a code for escape sequences.
RECPOL - Convert from rectangular to polar coordinates (in /jhuapl)
REMCHAR - Remove all appearances of a character from a string.
REM_DUP() - Remove duplicate values from a vector.
REMOVE -  Contract a vector or up to 8 vectors by removing specified elements
REPCHR() -  Replace all occurrences of one character by another (in /jhuapl)
REPSTR() -  Replace all occurrences of one substring in a string by another.
SELECT_W - Allow user to interactively select from a list of strings
SPEC_DIR() - Complete specification of a file name using default disk & directory
STORE_ARRAY - Insert one array into another, adjusting dimensions if necessary
STRCOMPRESS2() - Remove blanks around specified spaces in a string
STRN() - Convert a number to a string and remove padded blanks.
STRNUMBER()- Determine whether a string is a valid numeric value.
TEXTOPEN - Open a file for text output as specified by TEXTOUT keyword
TEXTCLOSE - Close a file that had been opened by TEXTOPEN.
TO_HEX()    - Translate a decimal integer to a hex string.
VALID_NUM() - Determine if a string is a valid number (cf. STRNUMBER)
VECT() - Display a set of numbers to a string with delimiters
WHERENAN() - Find points equal to big-endian IEEE NaN (not a number) values
XDISPSTR - Widget display of a string array with a simple search facility
ZPARCHECK - Check the type and size of a parameter