Basic use of ArcGIS 1

Opening of picture file

Open the picture you want （ Click on “ plus ” add to , Select link to folder , Find the picture location ）

Selection of projection coordinate system

At this time, there is no point coordinate , You need to select the projection coordinate system
Right click “ Layers ”, Click properties . Because our country adopts Gauss Kriging projection , therefore , Click here CGCS2000, Choose another one .

Map registration

The projection coordinates need to be corrected , Select two on the diagram （4) A little bit , These two (4) The best point is at both ends of the graph ( Four corners ）. Select the salient points , For example, the intersection of two rivers . In professional map software , such as 91 Weitu 、bigemap Set the central longitude on , Let the two points above fall in the same picture .

1. Start marking points
   Right click on the space , choice Map registration
   
   Select add control point （ double-click , Turn red )
2. Modify the coordinates . Click on “ Link table ”
   Modify the coordinates （X Map 、Y Map ）【 Pay attention to the same area 】
   
3. Full view . Change complete , Click on “ Full picture ”
   
   ps： Judge the quality of coordinate registration , Pay attention to whether the picture is crooked , Crooked is not well matched

Preservation of documents

** The preservation of pictures ：** Right click the file name , The file saving type is .lyr.

** Preservation of documents ：** Click on the file , Save the file .