Installing on Windows
Installing on UNIX
Installing on Macintosh
Licensing
If You Need Installation Assistance
IDL 7.1 Release Notes

There are two installation packages:
idl711win32_setup.exe for 32-bit Windows systems
idl711win64_setup.exe for 64-bit Windows systems



Note If you have a 64-bit Windows system, use the 64-bit installation package. It includes both 32-bit and 64-bit versions of IDL.



The installation program will un-compress files to a temporary space on your system drive. There must be sufficient space (500 MB) on your system drive before the installation process can begin. After installation, IDL 7.1 requires approximately 380 MB of disk space.
Windows XP and Vista are supported. (On 32-bit Windows XP systems, XP Service Pack 2 is required.)
You need Administrator privileges to install IDL. If you do not have such privileges, the installation process will fail because it cannot modify the system configuration.

Click on the link to download IDL 7.1.
In the Save As dialog, specify a location to save the executable file you are downloading (idl711win32_setup.exe for 32-bit Windows or idl711win64_setup.exe for 64-bit Windows) and click Save.
After the download is complete, go to the location where you saved the idl711win32_setup.exe or idl711win64_setup.exe file and double click on it to begin installing IDL.
Click Next to begin the installation process.
Read and accept the license agreement.
Choose the destination folder. The default installation path is C:\Program Files\ITT
Select the features to install. Typical installation features are pre-selected.
If you selected to install DICOM Network Services, you will be prompted about automatically starting the Network Services.
Begin the installation. Click on Next from the Start Copying Files dialog.
After installation, you are given the opportunity to license IDL. Licensing information for IDL 7.1 is provided here.
Release notes are included along with the IDL 7.1 installation, but see the IDL web site for late-breaking information.

IDL 7.1 requires approximately 675 MB of disk space.
If you plan to install IDL in a public directory, be sure you have root (or similar) permissions before running the installer.

A talented chorus girl (played by Debbie Reynolds) hired to secretly dub the voice of a popular but screechy-toned actress. Lina Lamont:

If you are looking for other notable musical numbers or specific arrangements from the production, here are the highlights: Key Musical Numbers

The film is celebrated for its legendary choreography and songs, many of which were originally written for earlier MGM musicals. THIRTEEN - New York Public Media "Singin' in the Rain":

When Gene Kelly swings from that lamppost, closed umbrella in hand, he isn't just ignoring the storm; he is welcoming it. In a world that often feels overcast, Singin’ in the Rain remains the ultimate cinematic antidote, reminding us that no matter how hard it pours, the sun is always waiting to break through.

Often considered a scene-stealer, O’Connor’s "Make 'Em Laugh" number is a masterclass in slapstick and acrobatic physical comedy.

Desperate, Don’s best friend and piano-man Cosmo Brown suggested a wild idea: dub Lina’s voice. But with whose?

IDL 7.1 requires approximately 400 MB of disk space.
Mac OS 10.5.1 (or later) is supported.
The Apple X11 Window System must be installed from the Mac OS X CD-ROM (it is not installed by default).
If you plan to install IDL in a default directory (/Applications/), be sure you have administrator privileges before running the installer.

Singin- In The Rain Jun 2026

A talented chorus girl (played by Debbie Reynolds) hired to secretly dub the voice of a popular but screechy-toned actress. Lina Lamont:

If you are looking for other notable musical numbers or specific arrangements from the production, here are the highlights: Key Musical Numbers

The film is celebrated for its legendary choreography and songs, many of which were originally written for earlier MGM musicals. THIRTEEN - New York Public Media "Singin' in the Rain":

When Gene Kelly swings from that lamppost, closed umbrella in hand, he isn't just ignoring the storm; he is welcoming it. In a world that often feels overcast, Singin’ in the Rain remains the ultimate cinematic antidote, reminding us that no matter how hard it pours, the sun is always waiting to break through.

Often considered a scene-stealer, O’Connor’s "Make 'Em Laugh" number is a masterclass in slapstick and acrobatic physical comedy.

Desperate, Don’s best friend and piano-man Cosmo Brown suggested a wild idea: dub Lina’s voice. But with whose?

Set up your environment. Before running the licensing wizard, you must define several environment variables used by IDL. You can use predefined setup files included with IDL to define these variables.

For C shell:

source ITT_DIR/idl71/bin/idl_setup  

For Korn shell:

. ITT_DIR/idl71/bin/idl_setup.ksh  

For Bash shell:

. ITT_DIR/idl71/bin/idl_setup.bash  

where ITT_DIR is the main installation directory for IDL.

Start the Licensing Wizard. To start the License Wizard, enter ittlicense at the UNIX prompt.

Select Activate a license using the internet.
Click Next. The licensing wizard will launch a web browser and open the ITT Visual Information Solutions licensing web site.
Enter your username and password and click Submit. Follow the instructions on the web site to generate your license key.
After you generate your license key, your IDL 7.1 license information is displayed in the License Wizard. A copy is sent to your electronic mail address.



Note On some platforms, the license information is not automatically transferred to the License Wizard. If the information is not transferred, copy it from the web browser window and paste it into the License Wizard.



Click Next to write your license into the correct location on your computer.
The licensing wizard will display the location of your license file. Click Exit to close the wizard. Your copy of IDL 7.1 is now licensed and ready to use.