Note: In versions of IDL up to and including IDL 4.0.1, the default exception handling was functionally identical to setting !EXCEPT=2. !EXCEPT takes its default value from a preference. !MOUSE A At startup, IDL contains a single internal message block named IDL_MBLK_CORE, which contains the standard messages required by the IDL system. See IDL_MSG_PREFIX for details. He presents concise information on how to develop IDL programmers that are well structured, reliable, and efficient.
By default, MESSAGE throws the IDL_M_USER_ERR message from the IDL_MBLK_CORE message block. NAME is often used in conjunction with the BLOCK keyword to throw a non-default message from a non-default message block. Code that uses the !SYSERR_STRING system variable will continue to function as before, but we suggest that all new code use !ERROR_STATE.SYS_MSG. !WARN A structure variable that causes IDL to print An IDL error is always comprised of an IDL-generated component, and may also contain an operating system-generated component. !ERROR_STATE includes the following fields: ** Structure !ERROR_STATE, 8 tags, length=112, data length=108: this page
PTR_FREE, P1, P2; If P1 or P2 are non-NULL, free P1 = (P2 = nullPtr); them so caller sees NULL pointers. Note: If this keyword is specified, no plain arguments or other keywords may be specified. Is there a list of error codes somewhere in IDL?
What happened? IOERROR Set this keyword to indicate that the error occurred while performing I/O. CONTINUE Set this keyword to return after issuing the error instead of taking the action specified by ON_ERROR. He has developed his expertise in IDL by analyzing and visualizing large earth science datasets acquired by NASA earth-orbiting satellites and aircraft.
See CHECK_MATH for details. Idl Pickcolorname It would be best to include a line that returns !quiet = 0 at the end of your program if you do change the value. ENDIF P1 = PTR_NEW(BYTARR(D1, D2)); Get first image. http://www.harrisgeospatial.com/docs/Error_Handling.html However, it may be restricted from transfer to various embargoed countries under U.S.
IDL code that ran perfectly yesterday is not working today! One possible problem with such an operation is that the system may not have enough memory to allocate both images. Hence, -1 indicates the caller of the current routine. What causes the error message Unable to create pixmap?
MESSAGE - Issue error and informational messages. additional hints It has the form: MESSAGE, Text where Text is a scalar string that contains the text of the error message. Error Message Idl CATCH, error; Establish catch block. IF (error NE 0) THEN BEGIN; An error occurs.
However, it may be restricted from transfer to various embargoed countries under U.S. Required Skills IDL Organization External Definitions Interpreting Logical Boolean Values Compilation and Linking Details Recommended Reading Using SPAWN and Pipes Using CALL_EXTERNAL The CALL_EXTERNAL Function Passing Parameters Using Auto Glue Basic Gumley is a researcher at the Space Science and Engineering Center at the University of Wisconsin-Madison. Interactive Data Language, IDL, was designed to address just this need.
Social IntelliEarth Solutions Geospatial Products Custom Services IntelliEarth Marketplace Industries Defense & Intelligence Environmental Monitoring Academic Learn Videos Blogs Events & Webinars Training Case Studies Whitepapers Resources Support Forums Help Articles Message follows... % WIDGET_CONTROL: Invalid widget identifier: 61. Here you will find reference guides, help documents, and product libraries. Docs Center IDL Programming IDL Reference Using IDL Modules Advanced Math and Stats Dataminer DICOM Toolkit APIs ENVI API Calling MESSAGE generates an exception that sets the !ERROR_STATE system variable. !ERROR_STATE.MSG is set to the string used as an argument to MESSAGE.
What does the error message Temporary Variables Still Checked Out mean? The possible non-NULL values are: Value Meaning errno Unix/Posix system error win32 Microsoft Windows Win32 system error winsock Microsoft Windows sockets library error MSG A read-only string variable containing the text OPENR, UNIT, 'DATA.DAT', /GET_LUN ; Arrange for jump to label EOD when aninput/output error occurs.
Code that uses the !SYSERROR system variable will continue to function as before, but we suggest that all new code use !ERROR_STATE.SYS_CODE. !SYSERR_STRING This system variable is now obsolete and has Note: The first thing MESSAGE does is issue an error. A popular data analysis and visualization programming environment, IDL is used worldwide by scientists and engineers in fields as diverse as the physical sciences, medical physics, and engineering test and analysis. MESSAGE, /REISSUE_LAST; Reissue the error.
The action specified by the ON_IOERROR procedure is executed instead of ON_ERROR. You can use the HELP, /MESSAGES command to see the currently defined message blocks. After an error has occurred, all of the fields of !ERROR_STATE display their updated status. In this example, we write a procedure named GET_TWO_POINTERS, which creates and returns two image variables of identical size via pointer heap variables.
and execution would halt. Another use of MESSAGE involves re-signaling trapped errors.