IDL image dispaly in window

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本文介绍了IDL中的基本图像显示命令，如window、wset、wshow及wdelete等用于窗口操作的指令，以及tv和tvscl用于图像显示的基本命令。此外还详细描述了MOUSSE版本的增强命令如chan、cdel、ctv、ctvscl等，这些命令提供了诸如自动调整窗口大小以匹配图像尺寸等功能。

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Image Display Commands:

The basic IDL direct graphics routines for opening, displaying, and adjusting image display windows are window , which creates a new window and sizes it; wset , which defines the "current" window; and wshow , which reveals (or hides) the current window. wdelete deletes a window. These routines are used in conjunction with the two basic image display routines tv and tvscl .

For instance, to open a 512x512 window with index number 9 at the lower right of your terminal display:
```
          
              window,9,xpos=750,ypos=50,xsize=512,ysize=512,$        
                 title='IDL IMAGE WINDOW'
              wset,9
              wshow
```
(All of the arguments in the window routine are optional.)
The basic tv and tvscl commands do not adjust the size of the current window to the size of the displayed array.

The routines chan,cdel,ctv,ctvscl described below are MOUSSE versions of the intrinsic IDL windowing/display routines. They offer important convenience features that make work with images faster (e.g. rescaling of window sizes to the image size, combination of the window set and show functions, arbitrary min/max values for the display, etc.). These routines use special common blocks, and to initialize those you must run the Mousse Startup File (see Appendix C). The descriptions below are for this set of substitutes for the intrinsic routines.

- Note: ctv and ctvscl are intended for 8-bit pseudo-color or 24-bit emulated pseudo-color displays only. They do not support true-color displays. If you want to display intrinsically true-color images, you must use tv and tvscl.