Getting Started - Basic Concepts

McIDAS-X Learning Guide
Version 2020

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Getting Started - Basic Concepts

Configuration GUI

Before you begin using this Learning Guide, McIDAS must be installed on your workstation and the account you are using must be enabled to run McIDAS. The first time you run McIDAS-X, the $HOME/.mcidasrc configuration file is created and the McIDAS-X Configuration Graphical User Interface (GUI) is run. The .mcidasrc file stores flags that configure the McIDAS session to your preferences. As shown below, the configuration GUI contains several tabs with sliders, checkboxes and text fields that are used to select values that override the settings of the corresponding flags in the .mcidasrc file. This configuration GUI makes one-time (for the current session only) configuration changes easier and less error-prone than other methods like changing flag settings in the .mcidasrc file or specifying the flags in the command line. By changing some of the start-up flags in the $HOME/.mcidasrc file, you can:

set the number of frames
allocate additional frame memory
run commands at startup
set the text fonts
set the command and output recall
set the workstation display
set the McIDAS Text and Command Window options
set the McIDAS Image Window options

The Start McIDAS button starts a McIDAS session with the current settings as defined by the Configuration GUI.

The Save Settings button saves the current GUI settings in the .mcidasrc file. To make recovery easier, the option first moves the current .mcidasrc to .mcidasrc.old before creating the new .mcidasrc with the GUI settings.

The Exit button exits the McIDAS configuration window without saving any changes or starting McIDAS.

The Configuration GUI tabs

Introduction
The Introduction tab displays a title page, as well as an option to display the configuration GUI each time McIDAS is started.
Image Window
The Image Window tab contains an option to add, modify, and delete frame specifications. The scrollbars allow the user to change the horizontal and vertical positioning of the image window and to edit the number of image and graphic colors used by McIDAS. There are also options to automatically resize the image window, and use 8-bit PseudoColor visual mode.
Text Window
The Text Window tab contains scrollbars to change the width and height of the text window, as well as the horizontal and vertical position. There are also options to change the number of scroll lines in the text window, and the number of commands to be saved in the command history. The drop down menus allow the user to change the look of the text window with font and color options.
Commands
The Commands tab contains an option to add, modify, and delete start-up commands that will be executed automatically when McIDAS starts. Any McIDAS command may be included in this list.
Miscellaneous
The Miscellaneous tab contains a variety of checkboxes, including options to start the GUI upon McIDAS startup, enable the McIDAS scheduler, enable character case inversion, specify a working directory, and to use the X Windows graphical pixel map to draw the cursor. There is also a scrollbar to change the amount of allocated memory for additional frames, and a memory efficiency optimization option.

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