shape边界切割raster

直接ARCTOOLBOX下的Spatial Analyst Tools 下的Extraction 下的Extract by Mask命令即可.其中MASK为FEATURES 层

 

1. In ArcMap, choose TOOLS --> EXTENSIONS and enable Spatial Analyst

2. Choose TOOLS --> CUSTOMIZE and make the Spatial Analyst toolbar visible

3. Add the RASTER grid and POLYGON.shp polygon data

To “clip” a grid in ArcGIS, all you need to do is set the appropriate Analysis Options

and then call on the Spatial Analyst Raster Calculator.

4. Choose SPATIAL ANALYST --> OPTIONS

5. Under the GENERAL tab, set the Analysis Mask to "Same as Layer POLYGON"

This sets the "clip" layer because processing is only allowed inside the chosen

vector features.

6. Under the EXTENT tab, select "Same as Layer POLYGON" as the Analysis

Extent

This ensures that the output raster will not be larger in extent than the POLYGON

layer. If you keep this the same as the original grid, you will get a lot of NoData.

7. Also, under the EXTENT tab, select "Same as Layer RASTER" as the Snap to

Raster layer

This ensures that the output raster cells line up with the input cells - you may opt to

ignore this or use a different layer, which may involve resampling.

8. Under the CELL SIZE tab, select "Same as Layer RASTER" as the Analysis Cell

Size

9. Click OK

Now when you perform any operation in Spatial Analyst, the output will be within the

POLYGON mask (so you may need to remember to reset or set it to None when

finished).

Finally, TO CLIP ANY EXISTING RASTER:

10. Choose SPATIAL ANALYST --> RASTER CALCULATOR

11. Double click on the RASTER layer to enter it in the expression box

12. Click EVALUATE

This is essentially the same as multiplying all values by one.

13. Right click on the "Calculation" and MAKE PERMANENT by saving with a new

name; e.g. RASTER_POLY