How do I clip a raster with a polygon in ArcGIS 10?

Question

As per the first image Click image for larger version [ATTACH=CONFIG]14125[/ATTACH], I have a raster in which I created an irregular polygon which I want to cut out, but KEEP the rest of the raster.

Using Extract by Mask, it removed everything except for the polygon Click image for larger version [ATTACH=CONFIG]14126[/ATTACH]; however, what I want is the opposite:

I want to KEEP the raster portion, but remove the polygon-shaped portion .

I'm not sure if I used the wrong tool, or what to do from here (note, everything was projected NAD83 UTM 10, so projections should not be an issue).

First.jpg

Second.jpg

IMG_3965.JPG

mee.jpg

Anonymous User · Answer

Original User: jbswain

Also repeated here.  There are many different ways to accomplish this that have been outlined in the previous forum post and in the blog referenced by Patrick.

PatrickTaurman · Answer

Hi Mark,

Have you looked at the Clipping an image or raster in ArcGIS blog post yet?  This gives a list of ways to remove inside or outside a polygon/graphic.  Your best bet would be draw a graphic of the area you want to remove, and use Data > Export Data, and select Using Selected Graphics and Clip Inside, or use the Image Analysis Window and select Mask (you will need a graphic for this also).

Patrick

Anonymous User · Answer

Original User: MrRobotoHi and thanks for replying.  Okay, I got part of it [ATTACH=CONFIG]14128[/ATTACH],  but after I made the square polygon, I don't quite understand exactly what to do (yes, I do want to remove that irregular polygon from the raster).

Use the "Erase" tool to remove the irregular portion from the square polygon, then do a extract by mask.