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• IDL FITS I/O Link to information about FITS I/O with IDL
• IUE Data Analysis Page Link to IDL software for the International Ultraviolet Explorer (IUE)
• FUSE Data Analysis Page Link to IDL software for the Far Ultraviolet Explorer (FUSE)
• GHRS Data Analysis Page Link to IDL software for the Goddard High-Resolution Spectrograph (GHRS)
• ISO Data Analysis Page Link to IDL software for the Infrared Space Observatory (ISO)
• WMAP Data Analysis Page Link to IDL software for the Wilkinson Microwave Anisotropy Probe (WMAP)
• COBE Data Analysis Software Link to IDL software for the COsmic Background Explorer (COBE)
• STARFINDER Software Link to STARFINDER software for PSF photometry of AO images
• HIIPhot Software Link to HIIPhot software for extended source (HII region) photometry
• BVLS Perform bound constrained linear least-squares minimization
• IDLWAVE GNU Emacs Link to IDLWAVE - The GNU Emacs mode for IDL
• QUARTERNION IDL Library of functions to manipulate quarternions(Markwardt Library)
• IMDISP Advanced replacement for TV and TVSCL (Gumley Library)
• ISMTAU Compute Xray/EUV optical depth for a given column density
• A_b() Compute B band interstellar extinction as a function of Galactic coords.(obsolete)
• ADSTRING() Format RA and DEC as a character string
• ASTDISP Display formatter for pixel + astronomical coordinates
• DATE_CONV() Function to perform various date format conversions
• EULER Transform between ecliptic, Galactic, and celestial coordinates
• GAL_FLAT() Correct a galaxy image for inclination effects.
• GALAGE() Derive a galaxy age as a function of redshift for a cosmological model
• GET_COORDS Read in angular input in decimal or sexigesimal format
• GET_DATE Get the current date in CCYY-MM-DD format (FITS standard)
• IMF() Return values for a multi-component power law initial mass function
• LUMDIST Return luminosity distance for a given redshift & cosmological model
• MAG2FLUX() Convert from magnitudes to flux units
• MPHASE Compute illuminated fraction of the Moon's disk for given Julian dates
• NUTATE Compute the nutation in longitude and latitude for given Julian date(s)
• PLANCK() Returns a blackbody flux for a given effective temperature
• RADEC Format RA, Dec as Hours,Min,Sec,Deg,Min,Sec
• TICPOS Specify distance between tic marks for astronomical coordinates
• TICLABELS Create labels for astronomical coordinate tick marks
• TICS Compute the optimum distance between tic marks for astronomical labeling
• WCSSPH2XY Convert between longitude,latitude to X,Y angular coordinates for 25 different map projection types
• WCS_DEMO Demo program for WCSSPH2XY and WCSXY2SPH
• WCS_GETPOLE Compute the coordinates of native pole for a non-polar projection
• ZANG() Compute angular size as a function of redshift in a Friedman cosmology
• DAO_VALUE Obtain the value of a daophot PSF function at a given set of points
• T_APER Driver procedure for APER with I/O to a disk FITS ASCII table
• T_FIND Driver procedure for FIND with I/O to a disk FITS ASCII table
• T_GROUP Driver procedure for GROUP with I/O to a disk FITS ASCII table
• T_GETPSF Driver procedure for GETPSF with I/O to a disk FITS ASCII table
• T_NSTAR Driver procedure for NSTAR with I/O to a disk FITS ASCII table
• T_SUBSTAR Driver procedure for SUBSTAR with I/O to a disk FITS ASCII table
• DBCREATE Create a new database data, index and/or format file.
• DB_INFO() Lower level routine to obtain information on an opened database
• DB_ITEM_INFO() Lower level routine to obtain information on specified item(s)
• DB_ITEM Lower level routine to return item number and other information
• DBPUT Lower level routine to place new value for specified item into an entry
• GSSSADXY Convert RA, Dec to pixel coordinates for an STScI survey image
• GSSSXYAD Convert pixel coordinates to RA, Dec for an STScI survey image
• HROTATE Apply IDL ROTATE function and update astrometry in a FITS header
• CONV_STSDAS Convert internal format of .hhd file to that of the host machine.
• IMGREAD Like STRD but supports group format and tailored to WF/PC, FOC files
• SXOPEN Open an STSDAS disk file for subsequent I/O
• SXWRITE Write an image to STSDAS format
• FTINFO Return an informational structure from a FITS ASCII table header
• TBINFO Return an informational structure from a FITS Binary table header
• FXBCLOSE Close a FITS binary table extension opened for read.
• FXBDIMEN() Returns the dimensions for a column in a FITS binary table.
• FXBFINISH Close a FITS binary table extension file opened for write.
• FXBOPEN Open binary table extension in a disk FITS file for reading
• FXBTFORM Returns information about FITS binary table columns.
• FITSRGB_to_TIFF Combine separate red, green, blue FITS files into TIFF format
• MKHDR Make a minimal FITS header for an image array.
• CONVOLVE() Convolve an image with a PSF using the product of Fourier Transforms
• CORREL_OPTIMIZE Compute the optimal pixel offset of one image relative to another by maximizing the correlation function.
• CORRMAT_ANALYZE Analyze the correlation function made by CORREL_IMAGE
• CR_REJECT General iterative cosmic ray rejection for 2 or more images
• DIST_CIRCLE Create a mask array useful for circular aperture photometry.
• DIST_ELLIPSE Create a mask array useful for elliptical aperture photometry.
• MEDARR Median filter across a set of images (e.g. for cosmic ray removal)
• SIGMA_FILTER() Replaces pixels deviant by more than a specified sigma from its neighbors. Useful for cosmic ray removal.
• XMEDSKY Compute the median sky as a 1-d function of X (for slitless spectra)
• HERMITE() Interpolate a tabulated function using a Hermite spline
• MINF_BRACKET Find 3 points which bracket the minimum of a function
• MINF_PARABOLIC Minimize a function using Brent's method with parabolic interpolation
• MINF_PARABOL_D Minimize a function using a modified Brent's method with derivatives
• MINF_CONJ_GRAD Find local minimum of a scalar valued function of several variables using conjugate gradient method
• PCA Perform a principal component analysis (Karhunen-Loeve expansion)
• PENT() Return the information entropy S of time-series data for a set of trial periods
• TABINV Find the effective index of a function value.
• TRANSFORM_COEFF Compute new polynomial coefficients under a linear transformation.
• ZBRENT() Find the root of a function known to lie between specified limits
• LEGEND Create an annotation legend for a plot
• TABLE_PRINT Print a disk STSDAS table in tabular form
• 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_PRINT Print the contents of an STSDAS table in tabular form
• TAB_SPPTOFOR Convert SPP print format to FORTRAN. Called by TAB_PRINT
• BSORT() Like the IDL SORT function but subscript order is maintained when values are equal -- like a bubble sort.
• 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
• F_FORMAT() Find the "best" F format to display an array of REAL*4 numbers.
• FIND_WITH_DEF Search for files with default path and extension
• FORPRINT Print a set of vectors by looping over each index value
• FSTRING Wrapper to STRING function to get around pre-V5.4 1024 element formatted limit (obsolete)
• GETLOG() Format the input name as a logical directory in the host OS (obsolete)
• GETPRO Search !PATH directory for a procedure and copy into user's directory
• LIST_WITH_PATH() Search for files within specified directory path
• NINT() Like intrinsic ROUND() function but returns integer instead of long
• OSFCNVRT() Format the input as a logical name in the host operating system
• READCOL Read a file of free-format ASCII data into IDL vectors
• READFMT Quickly read a file of fixed-format ASCII data into IDL vectors
• READ_KEY() Like GET_KBRD but returns a code for escape sequences.
• TEXTOPEN Open a file for text output as specified by TEXTOUT keyword
• BBOOTSTRAP() 1-parameter bootstrap calculation of function FUNCT
• PERMUTEST() Apply Fisher's Permutation Test for the equality of the means of two samples
• ROBUST_BIN2D Bins data in a 2-dimensional array suitable for surface or contour
• IDLV4_TO_V5 Convert subscripts of V4.0 procedures to square brackets for IDL V5.0
• ISFUNCTION Determine whether IDL programs in a file are procedures or functions
• XCTV2 Object-oriented widget display procedure for two images
• XCTVN Object-oriented widget display procedure for multiple images
• CHEBYSHFIT Interpolate a bad pixel mask with a 2-d Chebyshev function(Maskinterp Library)
• SPLINTERP Interpolate a bad pixel mask with a 2-d natural spline function (Maskinterp Library)
• CSPLINTERP Interpolate across a 2-d bad pixel mask using the SPLINE function (Maskinterp Library)
• MASKINTERP Interpolate 2-d Chebyshef function given a bad pixel mask (Maskinterp Library)
• GAUSFIT Interpolate a bad pixel mask with a 2-d Gaussian function (Maskinterp Library)
• TCTOOL Widget tool for creating true-color images
• PVOIGT Compute the Voigt function with partial derivatives (Solar Library)
• ANYTIM2CAL() Convert (almost) any time format to calendar format.(Solar Library)
• ANYTIM2UTC() Convert (almost) any time format to CDS UTC format. (Solar Library)
• CHECK_EXT_TIME Check CDS external time values for logical consistency. (Solar Library)
• CHECK_INT_TIME Check CDS internal time values for logical consistency. (Solar Library)
• DOY2UTC() Convert day of year to internal CDS time format. (Solar Library)
• INT2UTC() Convert CDS internal time to calendar format. (Solar Library)
• SEC2UTC() Convert seconds since MJD=0 to CDS UTC time format. (Solar Library)
• UTC2INT() Convert CCSDS calendar time to internal format.(Solar Library)
• UTC2SEC() Convert CDS UTC time format to seconds since MJD=0. (Solar Library)
• UTC2STR() Convert CDS external time in UTC to string format. (Solar Library)
• A_CORRELATE Compute the autocorrelation Px(L) or autocovariance Rx(L) of a sample population X as a function of the lag (L). (ITTVIS Library)
• ADAPT_HIST_EQUAL Perform Adaptive Histogram Equalization (AHE) for contrast enhancement. (ITTVIS Library)
• AMOEBA Multidimensional minimization of a function FUNC(X) using the downhill simplex method (ITTVIS Library)
• ASCII_TEMPLATE Generate a template that defines an ASCII file format. (ITTVIS Library)
• BANDPASS_FILTER Perform a bandpass filtering on a one-channel image. (ITTVIS Library)
• BANDREJECT_FILTER Perform a bandreject filtering on a one-channel image. (ITTVIS Library)
• BETA Return the Beta function of (possibly complex) Z(ITTVIS Library)
• BIN_DATE Converts a standard form ascii date/time string to a binary string. (ITTVIS Library)
• BINOMIAL Computes the probability (bp) such that: Probability(X => v) = bp for the binomial distribution (ITTVIS Library)
• C_CORRELATE Computes the cross correlation Pxy(L) of two sample populations X and Y as a function of the lag (L). (ITTVIS Library)
• CALENDAR Display a calendar for a month or an entire year using IDL's plotting subsystem. (ITTVIS Library)
• CDF_EXISTS Test for the existence of the CDF library (ITTVIS Library)
• CHEBYSHEV Implements forward and reverse Chebyshev polynomial expansion of a set of data. (ITTVIS Library)
• CLUSTER_TREE omputes the hierarchical clustering for a set of (Intrinsic)
• CURVEFIT Non-linear least squares fit to a function of an arbitrary number of parameters. (ITTVIS Library)
• CW_CLR_INDEX Compound widget for the selection of a color index (ITTVIS Library)
• CW_FIELD Widget cluster function to manages a data entry field widget. (ITTVIS Library)
• CW_FILESEL Compound widget for file selection (ITTVIS Library)
• CW_FORM Compound widget that creates small forms which contain text, numeric fields, buttons, lists and droplists (ITTVIS Library)
• CW_ORIENT A compound widget to provide a means to interactively adjust the three dimensional drawing transformation (!P.T). (ITTVIS Library)
• CW_PALETTE_EDITOR Compound widget for the modification of color palette editors (ITTVIS Library)
• CW_RGBSLIDER Compound widget that provides three sliders for adjusting color values (ITTVIS Library)
• CW_TREESTRUCTURE compound widget for the treeview of an IDL structure with nested substructures. (ITTVIS Library)
• DERIV Perform numerical differentiation using 3-point, Lagrangian interpolation. (ITTVIS Library)
• DERIVSIG Compute the standard deviation of a derivative as found by the DERIV function (ITTVIS Library)
• DISSOLVEA digital "dissolve" effect for images. (ITTVIS Library)
• DOC_LIBRARY Extract the documentation template of one or more IDL modules (procedures or functions). (ITTVIS Library)
• FILE_WHICH Look in the directories given by a file search path for a specific file (ITTVIS Library)
• FILEPATH Return the fully qualified path for a file in the IDL distribution, (ITTVIS Library)
• FUNCT Evaluate the sum of a Gaussian and a 2nd-order polynomial and optionally return the value of its partial derivatives. (ITTVIS Library)
• FX_ROOT Compute real and complex roots (zeros) of a univariate nonlinear function. (ITTVIS Library)
• GAUSS2DFIT Evaluate function for gauss2fit. (ITTVIS Library)
• GET_SCREEN_SIZE Retrieve the screen size for the current (or specified) display. (ITTVIS Library)
• H_EQ_CT Histogram-equalize the color tables for an image or a region of the display. (ITTVIS Library)
• HANNING Window function for Fourier Transform filtering. (ITTVIS Library)
• HDF_EXISTS Test for the existence of the HDF library (ITTVIS Library)
• HIST_2D Return the density function (histogram) of two variables. (ITTVIS Library)
• IBETA Compute the incomplete beta function, Ix(a, b). (ITTVIS Library)
• IGAMMA Compute the incomplete gamma function (ITTVIS Library)
• INT_2D Compute the double integral of a bivariate function F(x,y) using either a dy-dx or dx-dy order of integration. (ITTVIS Library)
• INT_3D Compute the triple integral of a trivariate function F(x,y,z) (ITTVIS Library)
• JULDAY Calculate the Julian Day Number for a given month, day, and year. (ITTVIS Library)
• LEEFILT Perform the Lee filter algorithm on an image array using a box of size 2N+1. (ITTVIS Library)
• LMFIT Non-linear least squares fit to a function of an arbitrary number of parameters (from Numerical Recipes) (ITTVIS Library)
• MK_HTML_HELP Generate an HTML file containing the documentation for User procedures (ITTVIS Library)
• MPEG_CLOSE Free all information associated with a given MPEG sequence (ITTVIS Library)
• NCDF_EXISTS() Test for the existence of the NetCDF library (ITTVIS Library)
• POLY Evaluate a polynomial function of a variable. (ITTVIS Library)
• POLY_FIT Perform a least-square polynomial fit with optional error estimates. (ITTVIS Library)
• POLYWARP Perform polynomial spatial warping. (ITTVIS Library)
• PSAFM Given an Adobe Font metric file, generate an AFM file in the format that IDL likes. (ITTVIS Library)
• QUERY_BMP Return a structure contain information about a BMP format image. (ITTVIS Library)
• QUERY_CSV Test a file for compatibility with READ_CSV and return informational structure (ITTVIS Library)
• QUERY_DICOM Determine if a file can be read as a DICOM format file. (ITTVIS Library)
• QUERY_GIF Return a structure containing information about a GIF format image. (ITTVIS Library)
• QUERY_JPEG2000 Return a structure containing information about a JPEG 2000 format image. (ITTVIS Library)
• QUERY_PICT Return a structure containing information about a PICT format image. (ITTVIS Library)
• QUERY_PPM Return a structure containing information about a PPM format image. (ITTVIS Library)
• QUERY_SRF Return a structure containing information about a SRF format image. (ITTVIS Library)
• QUERY_WAV Return a structure containing information about a Microsoft .WAV (RIFF) file (ITTVIS Library)
• READ_GIF Read the contents of a GIF format image file and return the image and color table vectors (ITTVIS Library)
• READ_PICT Read limited types of image files written in the PICT Version 2 (Macintosh) Format. (ITTVIS Library)
• READ_PPM Read the contents of a PGM (gray scale) or PPM (portable pixmap for color) format image file (ITTVIS Library)
• READ_SYLK Read the contents of a sylk (Symbolic Link) format spreadsheet data file and returns a cell data range (ITTVIS Library)
• READ_X11_BITMAP Read bitmaps stored in the X11 format. (ITTVIS Library)
• REGRESS Perform a multiple linear regression fit. (ITTVIS Library)
• RESOLVE_ALL Resolve (by compiling) all procedures and functions. (ITTVIS Library)
• SCALE3 Set up transformation and scaling for basic 3D viewing. (ITTVIS Library)
• SETUP_KEYS Set up function keys for use with IDL. (ITTVIS Library)
• SLIDE_IMAGE Create a scrolling graphics window for examining large images. By default, 2 draw widgets are used. (ITTVIS Library)
• SPLINE Perform cubi c spline interpolation. (ITTVIS Library)
• SPLINE_P Perform parametric cubic spline interpolation. (ITTVIS Library)
• SURFR Set up 3D transformations. (ITTVIS Library)
• SVDFIT Perform a general least squares fit with optional error estimates. (ITTVIS Library)
• T3D Implement three-dimensional transforms. (ITTVIS Library)
• T_CVF Compute the cutoff value (v) such that: Probability(X > v) = p where X is a random variable from the Student's t distribution with (df) degrees of freedom. (ITTVIS Library)
• T_PDF Compute the probabilty (p) such that: Probability(X <= v) = p where X is a random variable from the Student's t distribution with (df) degrees of freedom. (ITTVIS Library)
• TEST_LJ Exercise and demonstrate various aspects of the IDL driver for the Digital Equipment Corporation LJ-250 color printer. (ITTVIS Library)
• TIME_TEST General purpose IDL benchmark program that performs approximately 20 common operations and prints the time required. (ITTVIS Library)
• TRACKBALL Object to translate widget events into transformations that emulate a virtual trackball (ITTVIS Library)
• TS_COEF Compute the coefficients used in a Pth order autoregressive time-series forecasting/backcasting model. (ITTVIS Library)
• TS_DIFF Recursively compute the forward differences, of an N-element time-series, K times. (ITTVIS Library)
• TS_SMOOTH Compute central, backward or forward moving-averages of an n-element time-series (X). (ITTVIS Library)
• VERT_T3D Transform 3-D points by a 4x4 transformation matrix. (ITTVIS Library)
• WRITE_PICT Write image files with the current color palette in the PICT Version 2 (Macintosh) Format. (ITTVIS Library)
• WRITE_SYLK Write the contents of an IDL variable to a sylk (Symbolic Link) format spreadsheet data file. (ITTVIS Library)
• WRITE_WAVE Write a three dimensional IDL array to a .wave or .bwave file for use with the Wavefront Visualizer. (ITTVIS Library)
• WV_CWT Return the 1-dimensional continuous wavelet transform of the input array (ITTVIS Library)
• WV_DENOISE Use the wavelet transform to filter (or denoise) a multidimensional array (ITTVIS Library)
• WV_FN_GAUSSIAN Construct wavelet coefficients for the Gaussian wavelet function (ITTVIS Library)
• WV_FN_MORLET Construct wavelet coefficients for the Morlet wavelet function (ITTVIS Library)
• XBM_EDIT Let users create and edit bitmaps for use with IDL widgets as icons. (ITTVIS Library)
• XFONT Modal widget for selecting and viewing an X windows font (ITTVIS Library)
• XMANAGER Provide management for widgets client applications created using IDL. (ITTVIS Library)
• XMNG_TMPL Provide a template for widgets that use the XManager. (ITTVIS Library)
• XMTOOL Provide a tool for viewing Widgets currently being managed by the (ITTVIS Library)
• XVAREDIT Provides an editor for any IDL variable. (ITTVIS Library)
• BESELI Returns the I Bessel function of order N for the argument X (Intrinsic)
• BESELJ Returns the J Bessel function of order N for the argument X (Intrinsic)
• BESELK Return the K Bessel function of order N for the argument X (Intrinsic)
• BESELY Returns the Y Bessel function of order N for the argument X (Intrinsic)
• BREAKPOINT Allows you to insert and remove breakpoints in programs for debugging (Intrinsic)
• BYTEORDER Swap bytes within numbers or convert between host and XDR(IEEE) format (Intrinsic)
• CALL_EXTERNAL Call a function in an external sharable object and return a scalar value (Intrinsic)
• CALL_FUNCTION Call the IDL function specified by the string *Name*, passing any additional parameters as its arguments (Intrinsic)
• CATCH Establish an handler for the current procedure to intercept errors (Intrinsic)
• COLOR_QUAN Quantize a true-color image and return a pseudo-color image and palette for a pseudo-color display (Intrinsic)
• COMPILE_OPT Change the default rules for compiling a function or procedure (Intrinsic)
• COMPUTE_MESH_NORMALS Compute normal vectors for a set of polygons (Intrinsic)
• DEFINE_KEY Program a keyboard function key with the command line interface (Intrinsic)
• DFPMIN Minimize a user-written function using the Davidson-Fletcher-Powell method (Intrinsic)
• DIALOG_MESSAGE Create a model (blocking) dialog box to display information (Intrinsic)
• DIALOG_PRINTJOB Open a native dialog that allows one to set parameters for a print job (Intrinsic)
• DIALOG_PRINTERSETUP Open a native dialog for setting the applicable properties for a particular printer. (Intrinsic)
• DIALOG_READ_IMAGE Graphical Interface for reading image files (Intrinsic)
• DIALOG_WRITE_IMAGE Graphical Interface for writing image files (Intrinsic)
• ELMHES Reduce a real, nonsymmetric n by n array to upper Hessenberg form (Intrinsic)
• EMPTY Causes all buffered output for the current graphics device to be written (Intrinsic)
• EOF Test the specified file unit for end of file condition (Intrinsic)
• ERF Return the value of the error function (Intrinsic)
• ERFC Return the value of the complementary error function (Intrinsic)
• ERFCX Return the value of the scaled complementary error function (Intrinsic)
• EXP Natural exponential function (Intrinsic)
• FFT Return the complex, discrete Fourier transform of an array (Intrinsic)
• FILE_INFO Return status information about a specified file (Intrinsic)
• FILE_TEST Check for the existence and other attributes of a file (Intrinsic)
• FORMAT_AXIS_VALUES() Convert a vector of numeric values into a vector of string values (Intrinsic)
• FORWARD_FUNCTION Cause arguments to be interpreted as functions rather than variables (Intrinsic)
• FREE_LUN Deallocate previously-allocated file units (Intrinsic)
• GAMMA Return the gamma function (Intrinsic)
• GAUSSINT Return the integral of the Gaussian probability function (Intrinsic)
• GET_DRIVE_LIST Return valid drive or volume names for the file system (Intrinsic)
• GET_LUN Allocate a file unit from a pool of free units (Intrinsic)
• GRID3 Fit a smooth function to a set of 3d scattered nodes with associated data values (Intrinsic)
• HDF_BROWSWER GUI to view contents of an Hierarchical Data Format (HDF) file (Intrinsic)
• HDF_READ Extract Hierarchical Data Format (HDF) file into an output structure (Intrinsic)
• HEAP_FREE Recursively free all heap variables (Intrinsic)
• HEAP_GC Perform garbage collection on heap variables (Intrinsic)
• HELP Give the user information on various aspects of the IDL session (Intrinsic)
• HISTOGRAM Return a longword function equal to density function of the input array (Intrinsic)
• HOUGH Implement the Hough transform, used to detect straight lines in a 2-d image(Intrinsic)
• IMAGE_STATISTICS Compute sample statistics for a given array of values (Intrinsic)
• ISHFT Perform a bit shift operation on bytes, integers, and longwords (Intrinsic)
• LA_ELMHES() LAPACK Reduce a real nonsymmetric array to upper Hessenberg form (Intrinsic)
• LA_TRIRED LAPACK Reduce a real symmetric array to tridiagonal form (Intrinsic)
• LNGAMMA Return the logarithm of the gamma function of X (Intrinsic)
• MAP_PROJ_FORWARD Transform coordinates for a given projection from latitude & longitude to Cartesian (Intrinsic)
• MAP_PROJ_INFO Return information about the current map and/or the available projections (Intrinsic)
• MAP_PROJ_INVERSE Transform coordinates for a given projection from Cartesion to latitude & longitude (Intrinsic)
• MAP_SET Establish the axis type and coordinate conversion mechanism for map projections (Intrinsic)
• MEMORY Return information on the amount of dynamic memory currently in use (Intrinsic)
• MESH_DECIMATE Thin out a polygonal mess to use fewer polyons while preserving the mesh form(Intrinsic)
• MESH_SMOOTH Perform spatial smoothing on a polygonal mesh (Intrinsic)
• MESH_VALIDATE Check for NaN values, remove unused vertices and combine close vertices (Intrinsic)
• MESSAGE Issue error and informational messages in same way as built-in IDL routines (Intrinsic)
• OPENR Open an existing file for input only (Intrinsic)
• OPENU Open an existing file for input and output (Intrinsic)
• OPENW Open a new file for input and output (Intrinsic)
• PATH_SEP() Returns the character used to separate entries in a search path for a given OS (Intrinsic)
• POLY_2D Perform polynomial warping (geometrical transformation) of images (Intrinsic)
• POWELL Minimize a user-written function of 2 or more variables using the Powell method (Intrinsic)
• PRINT Perform formatted output (Intrinsic)
• PRINTF Perform formatted output to a file unit (Intrinsic)
• PROFILER Analyze code performance by the calling frequency and execution time (Intrinsic)
• PTR_FREE Destroy the heap variables pointed at by its pointer arguments (Intrinsic)
• QROMB Evaluate the integral of a function over a closed interval (Intrinsic)
• QROMO Perform numerical integration over an open interval using a modified Romberg's method (Intrinsic)
• QSIMP Perform numerical integration using Simpson's rule (Intrinsic)
• QUERY_BMP Obtain information about a BMP image file (Intrinsic)
• QUERY_GIF Obtain information about a GIF image file (Intrinsic)
• QUERY_JPEG Obtain information about a JPEG image file (Intrinsic)
• QUERY_JPEG2000 Obtain information about a JPEG2000 image file (Intrinsic)
• QUERY_MRSID Obtain information about a MrSID image file (Intrinsic)
• QUERY_PNG Obtain information about a PNG image file (Intrinsic)
• QUERY_TIFF Obtain information about a TIFF image file (Intrinsic)
• RADON Implement the Radon transform used to detect features in a 2-d image (Intrinsic)
• RANDOMN Return random numbers with a normal, uniform, Poisson, gamma or binomial distribution (Intrinsic)
• RANDOMU Return random numbers with a normal, uniform, Poisson, gamma or binomial distribution (Intrinsic)
• READ Perform formatted input into variables (Intrinsic)
• READF Perform formatted input from a file unit into variables (Intrinsic)
• READS Perform formatted input from a string variable into output variables (Intrinsic)
• READU Read unformatted binary data from a file into IDL variables (Intrinsic)
• READ_TIFF Read TIFF format images (Intrinsic)
• REFORM Change the dimensions of an array without changing number of elements (Intrinsic)
• REGISTER_CURSOR Associate the given name with the given cursor information (Intrinsic)
• RESOLVE_ROUTINE Compile procedures or functions given their names (Intrinsic)
• ROUTINE_INFO Provide info about currently-compiled procedures and functions (Intrinsic)
• SCOPE_LEVEL Return the scope level of the currently running procedure or function (Intrinsic)
• SCOPE_VARNAME Return the names of variables outside the local scope of the currently running procedure or function(Intrinsic)
• SHMVAR Create an IDL variable that uses mapped memory form the SHMMAP procedure (Intrinsic)
• SIZE Return a vector that contains size and dimension information for its argument (Intrinsic)
• SPL_INIT Establish the type of interpolating spline for a tabulated set of functional values (Intrinsic)
• SPRSAB Perform matrix multiplication on two row-indexed sparse arrays created by SPRSIN (Intrinsic)
• STRCMP Perform a string comparison between two string arguments (Intrinsic)
• STREGEX Perform regular expression matching on strings (Intrinsic)
• STRUCT_ASSIGN Perform a "relaxed" IDL structure assignment (Intrinsic)
• SWITCH Select one statement for execution from multiple choices (Intrinsic)
• TRIGRID Returns a regular grid of interpolated Z values for a given triangulation (Intrinsic)
• TRIRED Use Householder's method to reduce a real, symmetric array to tridiagonal form. (Intrinsic)
• WAIT Suspend execution of an IDL program for a specified period (Intrinsic)
• WIDGET_BASE Create a base widget (a container for other widgets) (Intrinsic)
• WIDGET_EVENT Returns events for the widget hierarchy rooted at the specified Widget_ID (Intrinsic)
• WIDGET_INFO Obtain information about the widget subsystem and individual widgets. (Intrinsic)
• WINDOW Create a window for the display of graphics or text. (Intrinsic)
• WRITEU Writes unformatted binary data from an expression into a file. (Intrinsic)
• WTN Return a multi-dimensional discrete wavelet transform of the input array (Intrinsic)
• XROI Utility for interactively defining regions of interest (ROIs) (ITTVIS Library)
• XPLOT3d Utility for creating and interactively manipulating 3d plots (ITTVIS Library)
• XVOLUME Utility for viewing and interactively manipulating volumes and isosurfaces(ITTVIS Library)
• CDF Documentation Documentation for the IDL interface routines for Common Data Format (CDF) files
• EOS Documentation Documentation for the IDL interface routines for HDF-EOS files
• HDF Documentation Documentation for the IDL interface routines for Hierarchical Data Format (HDF) files
• NetCDF Documentation Documentation for the IDL interface routines for Network Common Data Format (NCDF) files
• CMAPPLY Apply a generic function to an array (Markwardt Library)
• CMSET_OP performs three binary operations -- intersect, union and exclusive or -- on sets.(Markwardt Library)
• FILE_COMPILE Compile a file containing an IDL procedure or function (Markwardt Library)
• FILE_COMPILE Compile a file containing an IDL procedure or function (Markwardt Library)
• MFITPEAK MINPACK minimization of a 1-D Gaussian, Lorentzian or Moffat function (Markwardt Library)
• MFIT2DPEAK MINPACK minimization of a 2-D Gaussian, Lorentzian or Moffat function(Markwardt Library)
• MPFIT MINPACK Levenberg-Marquardt least-squares minimization of a nonlinear function (Markwardt Library)
• MPFITFUN Perform Levenberg-Marquardt least-squares fitting to an IDL function (Markwardt Library)
• MPFITEXPR Perform Levenberg-Marquardt least-squares fit to an arbitrary expression (Markwardt Library)
• TNMIN General non-linear function minimizer, truncated-Newton method (Markwardt Library)
• HELPFORM Generate a descriptive string in IDL HELP format(Markwardt Library)
• INPUTFORM Convert a value to an input expression (Markwardt Library)
• QPINT1D One dimensional numerical adaptive integration of IDL function or expression (Markwardt Library)
• CHEBFIT Fit Chebyshev polynomial coefficients to a tabulated function (Markwardt Library)
• CHEBGRID Estimate Chebyshev polynomial coefficients of a function on a grid (Markwardt Library)
• CHEBCOEF Estimate Chebyshev polynomial coefficients of a function on an interval (Markwardt Library)
• CMPS_FORM Widget program to figure a postscript device driver (Markwardt Library)
• XFWINDOW Intelligent Unix window for IDL that remembers graphics commands (Markwardt Library)
• CROSSPN A version of CROSSP for efficient vector cross products (Markwardt Library)
• DDEABM Integrate Ordinary Differential Equation by the Adams-Bashford-Moulton method (Markwardt Library)
• LINFITEX Model function for fitting a line with errors in both X and Y (Markwardt Library)
• LITMSOL Solve the light time equation for two moving bodies in the solar system (Markwardt Library)
• MPCHILIM Compute confidence limits of the chi-square statistic for a desired probability level. (Markwardt Library)
• MPNORMLIM Compute confidence limits for normally distributed variable (Markwardt Library)
• MPFIT2DFUN Perform Levenberg-Marquardt least-squares fit to a 2-D IDL function (Markwardt Library)
• QRFAC Perform QR decomposition of a rectangular matrix (Markwardt Library)
• QRSOLV Solve a linear equation after performing QR factorization (Markwardt Library)
• ASINHSCL Perform an inverse hyperbolic sine intensity transformation on an image (Fanning Library)
• THEMONTHS() Obtain the months of the year if various string formats (Fanning Library)
• CTLOAD Drop-in replacement for LOADCT with /CLIP and /REVERSE keywords (Fanning Library)
• DRAW_COLORS Object tool for drawing colors (Fanning Library)
• ERROR_MESSAGE A device-independent error messaging function (Fanning Library)
• FSC_COLOR Widget for selecting one of 88 colors by name (Fanning Library)
• FSC_DROPLIST replacement for WIDGET_DROPLIST with easy Get/Set Value capability (Fanning Library)
• FSC_INPUTFIELD A object replacement compound widget for CW_FIELD (Fanning Library)
• FSC_PLOTWINDOW A good-for-nothing object compound widget program (Fanning Library)
• FSC_PSCONFIG A full-featured program for configuring the PostScript device. (Fanning Library)
• GETIMAGE Widget for reading unformatted 2d and 3d arrays (Fanning Library)
• HISTOMATCH Perform Histogram matching (Fanning Library)
• JD2TIME Convert a Julian day number into a string of form "16 Mar 2009" (Fanning Library)
• JN2TIME Convert a Julian date number into a string of form "16 Mar 2009 15:34:26 " (Fanning Library)
• NUMBER_FORMATTER() format a number into a string (for a text widget) (Fanning Library)
• PICKCOLORNAME A blocking or modal dialog widget for selecting one of 88 color names.(Fanning Library)
• PRINTPATH Print the current IDL !PATH in a simple format for browsing (Fanning Library)
• PSCONFIG A function wrapper for graphically configuring the PostScript device (Fanning Library)
• NAME_SELECTOR A pop-up dialog widget for the purpose of selecting names (Fanning Library)
• SAVETOMAIN Save a variable to the main IDL level for later inspection (Fanning Library)
• SELECTIMAGE selection/browser widget for reading known format (e.g. TIFF, JPEG, etc.) images. (Fanning Library)
• SETDEFAULTVALUE Set default values for positional and keyword arguments (Fanning Library)
• SHOWPROGRESS Object for creating a show progress bar(Fanning Library)
• SORT_ND perform an N-dimensional sort along any dimension (Fanning Library)
• TRANSFORM_VOLUME transform (e.g., rotate, scale, and translate) a 3D array or volume. (Fanning Library)
• TVREAD Device-independent replacement for TVRD (Fanning Library)
• TVSCALE Device-independent replacement for TVSCL, works with !P.multi (Fanning Library)
• LOGLEVELS Compute default values for logarithmic axis labelling (Fanning Library)
• MG_LOCAL_MOMENT Find the local moments for a given window size for an array (Galloy Library)
• READPHA Read a spectrum from a OGIP-conformant PHA (FITS) file (Tuebingen Library)
• WRITEPHA Write a photon spectrum to a OGIP-conformant PHA (FITS) file (Tuebingen Library)
• ACF Compute the autocorrelation function of an evenly sampled lightcurve (Tuebingen Library)
• SF Compute the structure function of a light curve (Tuebingen Library)
• NICMOS IDL Page Link to IDL software for the Near-Infrared Camera Multi-Object Spectrograph (NICMOS)
• LUCY interactive tool for image restoration with the Richardson-Lucy algorithm. (NICMOS Library)
• FITSTOOL Interactive program for viewing and editing FITS image files with extensions. (NICMOS Library)
• TRUCOLOR interactive program for overlaying three images, one in each primary color. (NICMOS Library)
• IDP3 Image Display Paradigm #3 widget for manipulating images (NICMOS Library)
• MATCH_2D Perform a match between two sets of 2D coordinates (JD Smith Library)
• HIST_ND Perform an N-dimensional histogram (joint density function of N variables) (JD Smith Library)
• NINTERPOLATE Perform an N-dimensional linear interpolation on arrays of arbitary dimension (JD Smith Library)
• SORT_ND Efficiently perform an N-dimensional sort along any dimension of an array (JD Smith Library)
• STR_REPLACE() Perform search and replace actions on strings including regular expresions (ITTVIS Contrib Library)
• EVENTACTION Signal mechanism for IDL objects (ITTVIS Contrib Library)
• GREP2 Searche the current directory and !PATH for .pro files that contain a supplied search string(ITTVIS Contrib Library)
• DROP_FILE_IDL Basic "drag and drop" event support for an IDL draw widget.(ITTVIS Contrib Library)
• STRUCT_EQUAL() Function to compare two structures variables (ITTVIS Contrib Library)
• ZSCALE_RANGE Computes the best levels cuts for displaying astronomical images using IRAF zscale algorithm (Rome Library)