Crop the ArcGIS file without changing the attribute information

The installation directory of ArcGIS contains the arcglobedata folder, which contains several global data files. We need to crop part of the files as needed without changing the attribute information. The world image. lyr file is opened at the beginning. This file is not easy to convert several software tests, so the conversion of wsiearth. tif file is used to achieve the same effect. You can save a copy of beicai. tif to enhance security. ERDAS image processing software used in conversion.
1) Open the conversion copy beicai. tif in ERDAS and open another file Xinjiang provincial border. SHP to crop the rectangular range from beicai. tif according to Xinjiang provincial border. SHP. Adjust the image size to the following.

Because of the background, you can delete the image in Xinjiang.

This part is the region we are interested in.
2) use the AOI tool to crop the area in the image and save it as a. Aoi file for backup. Check the selected only check box.

You can also leave the image and AOI polygon in the window without exiting the window.
3) Click main | data preparation | subset image in the menu bar of the ERDAS icon to open the subset dialog box ,:

The input file name is beicai. tif, and the output file is 123.tif( you can name it as needed ). Click the AOI button to determine the crop range. Open the choose AOI dialog box. The AOI source is file (or viewer ). Here we select file. We need to further confirm the saved AOI file.
Other options are available by default. Click OK to crop the image.
This completes the task. You can check the effect in ArcInfo.

Compare the effect before cropping.