Encyclopedia of Graphics File Formats Companion

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Text File | 1994-05-18 | 17.6 KB | 415 lines

.HELP The following commands are available : BATch . . . . to execute a batch command file BRIghten . . . . add n to each DN value BROwse . . . . to display multiple files CD . . . . MSDOS change directory command COPy . . . . copy image to an internal buffer CURsor . . . . to move the cursor around DARken . . . . subtract n to each DN value DIR . . . . MSDOS directory command DISplay . . . . to display the image ENHance name . . . . filter the image ERAse . . . . to erase the display EXIt or QUIt . . . . to exit from the program FILe . . . . to specify the name of the image HIStogram . . . . to display the histogram of the image LABel . . . . to show image label LOG . . . . to save commands to a text file MASk . . . . to mask off pixels in the image MENu . . . . to invoke menu list MERge . . . . to combine internal buffers NEGative . . . . to photo negative the image OVErlay . . . . to draw grid lines on image PALette . . . . to adjust the palette for the display PERspective . . . . to display a pseudo-3D plot of the image PLOt . . . . to display and plot spectral data PROfile . . . . to plot a profile of the image REFresh . . . . to refresh the image plane ROTate . . . . to rotate a piece of the image SAVe . . . . to save the image display to a file SET . . . . to set display options SLAnt . . . . displays the image slanted left/right STRetch . . . . to do a linear gray scale stretch SYStem . . . . to execute MSDOS commands TEXt . . . . to place text on screen TYPe . . . . MSDOS type command WINdow . . . . to mark of a subimage on the display Only the capitalized letters are required for the command. The commands take optional keywords and values. The syntax is: COMMAND KEY1=VAL1 KEY2 VAL2 . . . Type 'HELP command' for help on a particular command. .FILE FILE takes a required string value, i.e. the file name FILE without filename enters file prompt mode FILE with a filename mask enters file prompt mode with only the matching filenames FILE also takes the following keyword: NOMemory forces FILE to read the image from disk, even if the image is already in XMS memory If the file does not have a recognizable (PDS, FITS, VICAR or GIF) header, the user is prompted for the number of lines, samples and bits per pixel and the number of initial bytes to skip. If a pixel requires more than 1 byte of storage, the user is also asked whether the bytes need to be swapped (e.g., 16-bit integers written by a VAX will need to be swapped). If the bytes need to be swapped, the displayed image or plot will look like random noise. .DISPLAY DISPlay takes the following keywords: SUBsample a positive integral subsampling factor ZOOm a positive integral zoom factor CENter to display area around cursor AUToset to automatically set dnlow and dnhigh to some percent n (def. 5 percent), based on histogram NL NS number of lines and samples to display in image SL SS starting line and sample in image LEFT RIGHT move starting sample left or right from previous UP DOWN move starting line up or down from previous DSL DSS starting line and sample on display FLIp flips the image top-to-bottom SOUrce displays the source file, if given in the label for Mars MDIM and Magellan F-MIDR only NOPrompt command line prompt is not displayed .ERASE ERAse takes no parameters .SET SET takes the following keywords : DNLOw DNHIgh the DN range to compress into display pixel Use no parameters to see the current values BROwse fname sets the default filename for use with BROWSE SELect fname sets default filename for use with BROWSE SELECT PALette dir sets default palette directory name for use with PAL LOAD command NS = n sets the number of samples/line for display SWAP swaps bytes when reading the image (>8 bits) UNSWAP resets SWAP, so bytes aren't swapped REFRESH ON turns on the refresh buffer REFRESH OFF turns off the refresh buffer DELay ON for batch files - pauses before executing a line DELay OFF for batch files - no pause before executing a line PROmpt ON for batch files - enables display of each command PROmpt OFF for batch files - disables display of each command DISplay vname changes the display type to the one specified. Standard graphics modes supported: CGA (640x200x2) EGA (640x350x16) EGA480 (640x480x16) VGA320 (320x200x256) VGA (640x480x16) Super VGA supported for the following: ATI640 (640x480x256) - ATI VGA Wonder Board ATI800 (800x600x256) - ATI VGA Wonder Board ATI1024 (1024x768x16) - ATI VGA Wonder Board EVGA512 (512x480x256) - Everex Board EVGA640 (640x480x256) - Everex Board ORCHID (640x480x256) - Orchid Board ORCHID800 (800x600x256) - Orchid Board ORCHID1024 (1024x768x256) - Orchid Board PARADISE (640x400x256) - Paradise Board 256K (640x480x256) - Paradise Board 512K TRIDENT (800x600x256) - Trident SVGA Boards PGA (640x480x256) - PGA Board Use the DOS SET command before starting IMDISP to set the default display type. EG: SET IMDISP=VGA will start up in VGA mode. .HISTOGRAM HISTogram takes the following keywords : SUBsample a integral subsample factor for speed NL NS number of lines and samples from image SL SS starting line and sample in image CENter do histogram on displayed portion of image VOY Use histogram from standard PDS Voyager image VIK Use histogram from standard PDS Viking image COL draw histogram using current color settings .PALETTE PALette takes the following keywords : EDIt = n to interactively adjust n color palette using the arrow keys on numeric keypad: left(4) and right(6) move to different palette color, ^left and ^right move to colors in larger steps, HOME and END move to the beginning/end colors, up(2), down(8) to increment/decrement all colors, letters R, r, G, g, B, b to incr/decr the color, invert the palette with x or X, scroll with S or s, and . or carriage return to end. PSeudo color PS = 0 for default palette PS = 1 for gray scale palette PS = 2 IBM EGA palette PS = 3 Redorange PS = 4 Prism PS = 5 Topo PS = 6 Contour PS = 7 BGRY PS = 8 Glasses1 PS = 9 Glasses2 PS =10 Perspective SAVe = file saves palette in text file LOAd = file loads palette from file, if no file is blank, then prompt mode is entered DISplay displays the current palette on the screen ERAse erases the current palette from the screen CYCle number Cycle color palette, S or s saves the palette CYC = 0 Blink CYC = 1 Blink 4 times CYC = 2 Rotate left CYC = 3 Rotate right CYC = 4 Rotate+random CYC = 5 Random CYC = 6 Double rotate CYC = 7 Random swap FAST delay .1 seconds between cycles instead of the default .3 seconds TIME n to cycle for n seconds .STRETCH STREtch takes the following keywords : LOw, HIgh the low and high DN values of the stretch e.g. STRET HI=128 for a stretch between 0 and 128 .CURSOR CURSor takes the following keywords: DSL, DSS place the cursor at the specified display line and sample location Use the mouse or numeric keypad to move the cursor around, '-' and '+' to change the cursor step size, and '.' or carriage return to end. .PROFILE PROFile takes no parameters Use the mouse or numeric keypad to move the cursor around, '-' and '+' to change the cursor step size, '.' or carriage return to select the first and second points .REFRESH REFResh takes no parameters Redisplays the images from the refresh buffer and erases any graphics currently on the screen. .BATCH BATch takes the following keywords : filename filename of batch command file .SAVE SAVe takes the following keywords : filename filename of image to save. If the filename has the extension GIF, the file will be saved in GIF format. Be patient - GIF takes time. REFRESH saves the screen to the refresh buffer NL NS number of lines and samples to save SL SS starting line and sample to save BP number of bits per pixel in output image .DOS The following MSDOS commands are supported: drive letter: Change default drive to specified letter CD path MSDOS change directory command DIR mask MSDOS directory command TYPe filename MSDOS type command SYStem or > Spawns an MSDOS process SYStem name executes program name .MENU MENu takes the following keywords : filename filename of menu list file .LABEL LABel prints the label for the current PDS or FITS format image. .TEXT TEXt takes the following format : LINe line number to position text at SAMple sample number to position text at TEXT 'text to type out on screen' <cr> .OVERLAY OVErlay takes the following keywords : MAXLAT the upper left latitude of the current image MAXLON the upper left longitude of the current image LEGend draw a legend with the current color assignments DN the dn value to use for drawing grid lines .BROWSE BROwse takes the following keywords : mask a wildcard (ie. *.IMG) to select files to browse SIZE the size to use for displaying multiple images SUB a subsampling factor to use to display images ie. 'SUB 2' scales the image to half size AUToset to automatically set dnlow and dnhigh to some percent n (def. 5 percent), based on histogram NOLabel do not put the filename label on displayed images DNLow DNHigh sets the DN range for all images (see SET) PAUse n pauses display for n seconds when the screen gets full ALL searches all subdirectories in addition to the current directory SELect interactively selects files as they are being displayed and writes the filenames out to a select file FILe fname select files to browse from a file instead of using a mask .PLOT PLOt takes the following keywords : LIN n plot line n of the image (2-D file only) SYMbol x draw the plot using character x instead of a line ZOOm prompt user to zoom the plot OVErlay overplot - do not erase the current plot CENter plot the image line containing the cursor MAX n set the maximum value in the plot MIN n set the minimum value in the plot COLor n use DN value n to plot the data SPEctral analyze the plot of a spectrum .SERIAL SERial takes the following keywords : INIt initialize the serial port COM n set COMn as the serial port to use BAUd n set the baud rate to n COMmand 'string' write 'string' out the serial port .PRINT PRInt takes the following keyword : TEK4693 use the Tektronix 4693DX driver .NEGATIVE NEGative takes no parameters .BRIGHTEN BRIghten n adds n to every pixel in the image The default is 10% of the total range, i.e., 2 for a 16 color display, 26 for a 256 color .DARKEN DARken n subtracts n from every pixel in the image The default is 10% of the total range, i.e., 2 for a 16 color display, 26 for a 256 color .ENHANCE ENHance takes the following keywords: BAAlke applies a custom filter developed by Ron Baalke CONvolution n applies one of 2 weighted 3x3 filter to the image EDGe n applies one of 4 3x3 edge enhancement filters LOG n applies a logarithmic filter to the image MEAn n applies one of 3 mean filters to the image MEDian applies a 3x3 median filter to the image POWer n applies an exponential filter to the image STAir n applies a stairstep smoothing to the image SMEar applies a smearing filter to the image UNSharp applies an unsharp mask filter to the image SCReen applies the filter only to the image on the screen, instead of the entire image .SLANT SLAnt takes the following keywords: LEFt displays the image slanted to the left RIGht displays the image slanted to the right (default) SCReen slants the image currently on the screen .LOG LOG takes the following keywords: ON saves entered commands to the file IMDISP.LOG FILe name saves entered commands to the file named OFF closes the log file (same as CLOse) CLOse closes the log file (same as OFF) .PERSPECTIVE PERspective takes the following keywords: SL n starting line of the image SCR reads image from the screen buffer .COPY COPy uses buffers named A through Z. COPy has these forms: COPy buffer [FILE] copies last displayed image to the buffer specified (may be a disk file COPy source TO buffer [FILE] where source can be SCREEN or another buffer .MERGE MERge combines buffers or images. MERge has these forms: MERGE buffer Merge last displayed image with the buffer named and display the result MERge source1 [scale1] WITH source2 [scale2] [TO buffer] [FILE] to perform image arithmetic .MASK MASk substitutes a value for all pixels above or below a specified value. MASk takes the following keywords: LO n sets all pixels with a DN less than n to 0 HI n sets all pixels with a DN greater than n to 255 WITh n sets the pixels to value n instead of the default .WINDOW WINdow sets the limits of a subimage by marking out a box on the screen. WINdow takes the following keywords: CANcel sets the default back to the entire screen L1 sets the first line of the window L2 sets the last line of the window S1 sets the first sample of the window S2 sets the last sample of the window .ROTATE ROTate n rotates the image or subimage through the specified angle. ROTate takes the following keywords: SCReen rotates the screen, rather than the entire image CLIp trims off pieces of the image off the screen NOFill don't blank out the empty parts of the result .OPTIONS Within this command summary listing, brackets ([]) indicate optional parameters or keywords. Filename is the name of a file in the current directory or a fully qualified filename which can include drive letter and pathname. Directory name is an MS-DOS directory path specification, a valid directory mask a specification containing wild card characters (*, ?) per MS-DOS rules for wildcard use in the DIRECTORY command. The symbol "n" is used to indicate an integer value. BATCH [filename] BRIGHTEN [n] BROWSE [directory mask] [SIZe n] [SUB n] [NOLabel] [DNLOw n] [DNHIgh n] [PAUse n] [ALL] [SELect] [FILe] [BUFFERS] [AUToset n] CD [directory name] [..] CHDIR [directory name] [..] COPY [buffer [TO buffer]] [FILE] CURSOR [DSL n] [DSS n] DARKEN [n] DIRECTORY [directory mask] [/w] DISPLAY [SUB n] [SL n] [SS n] [NL n] [NS n] [BP n] [CENTer] [DSL n] [DSS n] [ZOOm] [FLIP] [NOPrompt] [NOMemory] [AUToset] [SOUrce] [CURsor] [buffer] ENHANCE [BAAlke] [CONvolution n] [EDGe n] [HIGh n] [HIStogram] [LOG n] [MEAn n] [MEDian] [POWer n] [STAir n] [SMEar] [SCReen] [UNSharp] ERASE [REFRESH] [buffer] EXIT [NOClear] FILE [filename[.GIF]] ["CD:mm:ss:bb"] [NOMemory] HELP [command name] HISTOGRAM [SUB n] [SL n] [SS n] [NL n] [NS n] [BP n] [CENter] [VOYager] [VIKing] [buffer] LABEL LOG [ON] [FILe filename] [CLOse] [OFF] MASK [LO n [WITH n]] [HI n [WITH n]] MENU [filename] MERGE [buffer [scale] [WITH buffer [scale] [TO buffer]]] [FILE] NEG OVERLAY [MAXLAT n] [MAXLON n] [MINLAT n] [MINLON n] [LEGend] PALETTE [EDIT n] [PS n] [LOAd filename] [SAVe filename] [DISplay] [ERAse] [CYC n [FAST] [TIME n]] PERSPECTIVE [SL n] [SCR] PLOT [LINE n] [SYMBOL x] [COLOR n] [MAX n] [MIN n] [OVERLAY] [ZOOM] [SPECTRAL] PROFILE QUIT [NOClear] REFRESH ROTATE [n] [SCReen] [NOFill] [CLIp] SAVE filename[.GIF] [FORmat fmt] [SL n] [SS n] [NL n] [NS n] [BP n] [REFRESH] SET [DNLO n] [DNHI n] [BROwse filename] [DIS name] [NS n] [PAL dir] [REFresh ON/OFF] [DELay ON/OFF] [PROmpt ON/OFF] [BUFFERS dir] SLANT [RIGht] [LEFt] STRETCH [LO n] [HI n] SYSTEM [MS-DOS command] TEXT [LINe n] [SAMple n] "text" or 'text' [NOPrompt] TYPE filename WINDOW [CANcel] [S1 n] [L1 n] [S2 n] [L2 n]