- i2f -- Read two-dimensional IRAF image file and write FITS image file
- i2gaussfit -- Iterative 2-d Gaussian fit to noisy images (script).
- identify -- Identify features in spectrum for dispersion solution
- igi -- Interactive Graphics Interpreter.
- ihead -- Print FITS or IRAF header
- illumination -- Determine illumination calibration
- ils -- Iterative Least Squares image restoration.
- im2gki -- Send an image to a IRAF GIO graphics device.
- im3dtran -- Transpose a list of 3-D images
- imagfe -- Register using common features of image data.
- imagree -- Change header keywords to agree with the image name.
- imalign -- Align and register 2-D images using a reference pixel list
- imarith -- Simple image arithmetic
- imcalc -- Perform general arithmetic operations on images.
- imcat -- List catalog sources in the area of the sky covered image with WCS imextract- Extract single FITS or IRAF images from a compound FITS or IRAF image
- imcctran -- Transform image header from one celestial wcs to another
- imcentroid -- Compute and print relative shifts for a list of 2-D images
- imcntr -- Locate the center of a stellar image
- imcnts -- count photons (with bkgd subtraction) in regions
- imcombine -- Combine images pixel-by-pixel using various algorithms
- imcompress -- Compress an IRAF image by pixel summation
- imcontour -- display a contour map of an image using wcs
- imcopy -- Copy an image
- imcreate -- Create an image from a binary file or a constant value
- imdelete -- Delete a list of images
- imdetect -- determine rough positions of sources in the field
- imdisp -- display pixel values in regions
- imdisp_pos -- Determine image location in image display.
- imdivide -- Image division with zero checking and rescaling
- imdkern -- Image display device (IMD) graphics kernel
- imedit -- Examine and edit pixels in images
- imexamine -- Examine images using image display, graphics, and text
- imexpr -- Evaluate a general image expression
- imextensions -- Make a list of image extensions
- imextreme -- Locates the maximum and minimum pixels in an image.
- imfill -- Set fill value in image according to a mask.
- imfunction -- Apply a single argument function to a list of images
- imgets -- Return the value of an image header parameter as a string
- imgsc -- List HST Guide Star Catalog sources in sky covered by image with WCS
- imgsc2 -- List GSC II sources in sky covered by image with WCS
- imgscale -- Calibrate aperture plate scale (location phase II).
- imheader -- Print an image header
- imhistogram -- Compute and plot or print an image histogram
- iminfo -- Print an instrument-specific header for a list of GEIS images or a general header for a list of IRAF images.
- iminsert -- Insert an image into another by either adding, replacing, or multiplying pixel values.
- imjoin -- Join images along a given dimension
- imkeyname -- Rename an image using a name from a header keyword.
- imlintran -- Linearly transform a list of 2-D images
- immean -- Compute mean of an image and save value as task parameter.
- immodel -- create a model array from a source list
- imnode -- Remove node information from a IRAF image pixfile pathname
- implot -- Plot lines and columns of images using cursors
- import -- Convert some other format to an IRAF image
- imppm -- List PPM catalog sources in sky covered by image with WCS *
- improj -- perform rectangular projections on an image
- improject -- Project image along one axis decreasing the number of dimensions by one.
- imrename -- Rename one or more images
- imreplace -- Replace a range of pixel values with a constant
- imreplicate -- Expand an IRAF image by pixel replication
- imrot -- Rotate and/or reflect FITS or IRAF image files
- imscale -- Scale an image to a specified (windowed) mean
- imshift -- Shift a list of 1-D or 2-D images
- imsize -- Print center and size of image using WCS keywords in header
- imslice -- Slice images into images of lower dimension
- imsmooth -- smooth an image
- imspec -- Convert an image to a synphot spectrum or vice versa.
- imstack -- Stack images into a single image of higher dimension
- imstar -- Find and list stars in an IRAF or FITS image
- imstatistics -- Compute and print statistics for a list of images
- imsum -- Compute the sum, average, or median of a set of images
- imsurfit -- Fit a surface to a 2-D image
- imtab -- Copy an image to a table column.
- imtile -- Tile same sized 2D images into a 2D mosaic
- imtitle -- Change the title of an image (noao.proto V2.9)
- imtmc -- List 2MASS Point Sources in sky covered by image with WCS
- imtranspose -- Transpose a list of 2-D images
- imua2 -- List USNO A2.0 catalog sources in sky covered by image with WCS
- imucac2 -- List USNO UCAC2 catalog sources in sky covered by image with WCS
- imusa2 -- List USNO SA2.0 catalog sources in sky covered by image with WCS
- imverify -- Verify that an image was copied correctly.
- imwcs -- Fit a world coordinate system to a FITS or IRAF image
- incidence -- Calibrate incidence angle.
- infostis -- Print information about STIS FITS files.
- instruments -- Instrument specific data files
- interp -- Interpolate for a value in a table of X,Y pairs
- intrep -- Find coordinates at the cursor.
- intrinsicspecplot -- Plot the emitted and observed spectrum
- intro -- A brief introduction to IRAF
- inttag -- Convert an events table of TIMETAG into an integrated ACCUM image.
- inverse -- Compute inverse Fourier transform of an image.
- invertfit -- Compute the standard indices by inverting the fit
- invmetric -- Translate RA & Dec to WF/PC pixel coordinates with geometric corrections.
- ionic -- Determine ionic abundance relative to H+
- irafil -- Create an IRAF image from a binary data file
- iralign -- Align the image produced by irmosaic
- irlincor -- Correct IR imager frames for non-linearity
- irmatch1d -- Align and intensity match the image produced by irmosaic (1D)
- irmatch2d -- Align and intensity match the image produced by irmosaic (2D)
- irmosaic -- Mosaic an ordered list of images onto a grid
- isoexam -- Plot ellipses on the image display (interactive).
- isoimap -- Plot ellipses superposed over the gray-scale image display.
- isomap -- Plot ellipses superposed over image contours.
- isopall -- Plot summary of all results from isophotal analysis.
- isoplot -- Plot results of isophotal analysis.
- isoreg -- create region mask by applying intensity levels to image data
- istable -- Is a file a table or text database file ?
- iterstat -- Iteratively compute and print image statistics