STSCI Python Introduction Class 3 Jim Hare Today's Agenda · · · · · · Functions Passing Arguments to Modules File I/O User Defined Objects Variable Scopes System Commands and Controls 1 Functions · Function template · Consists of def statement, parameters and return def test1(x,y,j=`testcase1') j=`testcase1' is the default · Example update_default_db.py isql' % (account,database)) os.system('printf "select db_name()\\ngo" | ...

GPLOT is written for those who want a lot of flexibility in creating plots and are not satisfied with standard plotting facilities in other GIPSY applications. ... GPLOT is command driven and therefore cannot be compared with a program like CPLOT which is controlled by keywords. ... It processes plot commands like frame , move , draw , quit etc. with or without parameters. ... A destination is set with command device . ... In this document such command files are used as recipes for example plots. ...

. To append the standard output from a command to a file use two >> (greater than) symbols followed by the name of the file. If the file does not exist it is created. For example: cat part1 > chapt2 cat part2 >> chapt2 . This creates a file called chapt2 with the same contents as part1 . It then reads the contents of part2 and appends them to the file chapt2 . The file chapt2 now contains the data from part1 followed by the data from part2 .

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

ntptime [ -chr ] [ -e est_error ] [ -f frequency ] [ -m max_error ] [ -o offset ] [ -s status ] [ -t time_constant ] . This program is useful only with special kernels described in the A Kernel Model for Precision Timekeeping page. It reads and displays time-related kernel variables using the ntp_gettime() system call. ... Display the execution time of ntptime itself. -e est_error . Specify estimated error, in microseconds. -f frequency . ... Display times in Unix timeval format. ...

Next: Column FILTCODE_ n Up: Passbands Previous: Passbands . The column named BAND gives the standard name of the band. ... Standard values for the BAND column are: . ... Notice that each distinct type of measurement counts as a separate band entry, including measurements made with different neutral-density filters, red-leak, and dark measurements. ... The column named NBAND contains an integer used for cross-referencing. ... Normally, this is the reference column for the whole table file. ...

OptInt PmWiki : Pm Wiki / Page Text Variables . Page variables | ... Page text variables are string variables automatically made available through natural page markup or explicitly with page directive markup within the wiki text of the page. ... use a definition list - the normal pmwiki markup for a definition list will create a page text variable . ... This creates a new variable that can be accessed by {$:Name} (becomes: "Crisses") in the page. use a simple colon delimiter in normal text . ...

... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

... WIP is an interactive package with a simple to use interface designed to produce high quality graphical output. WIP was developed as part of the Berkeley-Illinois-Maryland Association (BIMA) project and is available via anonymous ftp. ... Included in the WIP distribution is a complete manual which contains several sample figures with associated commands, a frequently asked questions section, and a descriptive listing of all available commands. ... Figure illustrates WIP's ability to handle images. ...

... slconv (slconv-2.1.3) [xmmsas_20060628_1801-7.0.0] . ... slconv srclisttab=srclist.ds radiusexpression='RATE/10.0' . ... slconv srclisttab=srclist.ds radiusexpression='RATE/10.0' expression='(ID_BAND==0)&&(!(isnull(EXT)))&&((ID_INST!= ... slconv srclisttab=srclist.ds radiusexpression='RATE/10.0' expression='!(isnull(EXT))' withncut=yes ncutsortexpression='EXT' ncut=10 . ... slconv srclisttab=srclist.ds radiusexpression='RATE/10.0' outputstyle=gaia extragaiacolumns='RADEC_ERR COUNTS EXT EXT_ML' . ...

The Apache HTTP Server provides a mechanism for storing information in named variables that are called environment variables . ... For additional flexibility, the directives provided by mod_setenvif allow environment variables to be set on a per-request basis, conditional on characteristics of particular requests. ... As discussed above, the environment passed to CGI scripts includes standard meta-information about the request in addition to any variables set within the Apache configuration. ...

... This chapter discusses values that JavaScript recognizes and describes the fundamental building blocks of JavaScript expressions: variables and literals. ... Values . ... Unicode . ... So, for example, you could define a variable as follows: var answer = 42 And later, you could assign the same variable a string value, for example, answer = "Thanks for all the fish.. ... A JavaScript identifier, or name, must start with a letter or underscore ("_"); subsequent characters can also be digits (0-9). ...

nearneighbor - A Nearest neighbor gridding algorithm nearneighbor [ xyzfile ( s ) ] -G out _ grdfile -I x _ inc [ m|c ][/ y _ inc [ m|c ]] -N sectors -R west / east / south / north [ r ] -S search _ radius [ m|c|k|K ] [ -E empty ] [ -F ] [ -H [ nrec ] ] [ -L flag ] [ -V ] [ -W ] [ -: ] [ -bi [ s ][ n ] ] nearneighbor reads arbitrarily located (x,y,z[,w]) triples [quadruplets] from standard ... Default is quadrant search, i.e., sectors = 4]. ... H Input file(s) has Header record(s). ...

Next: Viewing the qpoe file. ... At the current time (1997 Dec), the only AXAF files of general interest are those produced by MARX via the MARX utility 'marx2fits' and 'marx2img'. Although the MARX fits files conform to FITS standards, there are two parameters in the events list fits header which are written as reals whereas fits2qp expects integer format. ... The following description tells how to produce a qpoe file from the MARX fits file (events list format). ... chipx,chipy . ...

... Defining New Data Types . Unions . ... Static Variables . ... struct gun { char name[50]; int magazinesize; float calibre; }; struct gun arnies; . ... struct gun { char name[50]; int magazinesize; float calibre; } arnies; . ... typedef struct gun { char name[50]; int magazinesize; float calibre; } agun; agun arnies={"Uzi",30,7}; . ... stat() { int auto_var = 0; static int static_var = 0; printf( ``auto = %d, static = %d n'', auto_var, static_var); ++auto_var; ++static_var; } . ...

... Executable GOTO statements . ... Input/output statements . ... GOTO statement_number_variable, (snr1, snr2, snr3) - an assigned GOTO statement, jumps to the statement number that equals the statement number variable (an arbitrary number of statement numbers snr are permitted). GOTO statement_number_variable - this is an assigned ordinary GOTO statement, it is a combination of the first one, GOTO snr1, and previous one, GOTO statement_number_variable without a list of permitted alternatives. ...

... Standard Commands . ... TwistedActor.Actor is core code for writing an actor: an instrument control computer (ICC) or hub-based script that does something useful. This manual describes the standard commands and keywords that any actor based on TwistedActor.Actor will support. All actors based on TwistedActor typically support the following standard commands (plus additional device-specific commands documented in that actor's manual). ... Connect one or more devices (if not already connected). ...

Chapter 11. Specifying OpenGL Environment Variable Settings . ... Several antialiasing methods are available and you can select between them by setting the __GL_FSAA_MODE environment variable appropriately. ... To see the available values for __GL_FSAA_MODE along with their descriptions, run: nvidia-settings --query=fsaa --verbose . The __GL_FSAA_MODE environment variable uses the same integer values that are used to configure FSAA through nvidia-settings and the NV-CONTROL X extension. ...

DFS Department . Standard and recommended development tools . ... This tool is available on request from Helpdesk (except for the following machines: dfs3, dfs4 and dfs5, for which you have to contact Carlos ). ... Source Navigator IDE is recommended as a source code analysis and navigator tool for C, C++, Java, Tcl, [incr Tcl], FORTRAN and even COBOL on Linux:. ... webcheck is the DFS standard tool for archiving/retrieving DFS documents, web pages, Release Notes, schedules and ToDo lists. ...

... The choice of which type of electricity is called "positive" and which "negative" was made around 1750 by Ben Franklin, early American scientist and man of many talents (the stamp on the left commemorates his role as first US postmaster--and colonial postmaster before that). ... Franklin knew of two types of electric charge, depending on the material one rubbed. ... Later, when electric batteries were discovered, scientists naturally assigned the direction of the flow of current to be from (+) to (-...