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| author | bnewbold <bnewbold@ziggy.(none)> | 2010-01-18 12:14:37 -0500 |
|---|---|---|
| committer | bnewbold <bnewbold@ziggy.(none)> | 2010-01-18 12:14:37 -0500 |
| commit | 01b39987ec789c21cf368a5a883ac407f9daedd7 (patch) | |
| tree | 95884a915868da76681760b306802b6de6bdd742 /software | |
| parent | 39d44e2d65d40804e28947f4e5cc66b35c5a3b8d (diff) | |
| parent | 57ddf14ce8f4216d59f9983c5b02a021f95615a7 (diff) | |
| download | knowledge-01b39987ec789c21cf368a5a883ac407f9daedd7.tar.gz knowledge-01b39987ec789c21cf368a5a883ac407f9daedd7.zip | |
Merge branch 'master' of daemon.robocracy.org:/srv/git/knowledge
Diffstat (limited to 'software')
| -rw-r--r-- | software/idl.page | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/software/idl.page b/software/idl.page index 00b444a..78e41b3 100644 --- a/software/idl.page +++ b/software/idl.page @@ -1,7 +1,7 @@ --- format: rst categories: software -toc: yes +toc: no ... ================== @@ -24,12 +24,29 @@ Syntax ----------------- Procedures are called with a comma seperated list-like syntax where the first -element is the procedure and the following elements are arguments. +element is the procedure and the following elements are arguments. -Command Interface ------------------ +The ``!`` character as a prefix is used to designate system variables. + +``;`` is used for commenting. + +``.`` can be used to start executive commands, +Indicate constant is floating point +Start executive command + +``&`` separates multiple statements/expressions on a single line (like ``;`` +often does in other languages). + +``*`` can be used for pointer dereferencing, as well as for multiplication +and a wild card in array slicing. -Instead of the ever-standard ``!`` to execute system commands, use ``$``. +``@`` is used to include files, or execute a batch file. + +``?`` brings up the IDL GUI help interface when entered at the +command line. + +Instead of the ever-standard ``!`` to execute system commands, use ``$``. Also, +an ``$`` at the end of a line means continue to the next line, like ``\``. X Windows -------------- @@ -43,3 +60,9 @@ add these lines to your ``~/.Xdefaults``:: and then run ``xrdb -merge ~/.Xdefault``. (This tip from http://star.pst.qub.ac.uk/help/idl.shtml) + +Basic Constructors +-------------------- +BINDGEN, CINDGEN, DCINDGEN, DINDGEN, FINDGEN, L64INDGEN, LINDGEN, UINDGEN, UL64INDGEN, and ULINDGEN create arrays of increasing values, similar to range() in python; the prefix characters indicate the data type (B = byte, C = complex integer, etc). + +The exponent notation ``5.67e3`` creates a floating point number, while ``5.67d3`` creates a double length float.
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