Looking for some direction on clipping a tile image to a boundary. I can find references to clipping an image. I remember being able to do that in previous versions with geotiff's, but maybe it is not recognized as an image in 9? In the attached example, I am wanting to clip the "Total DEM" to the HUC12 area. I imported 50 tile images, reprojected them, merged them and want to clip it. "Total DEM" showing as Tile. HUC12 is a showing as Geom.

Attachments:
Merged DEM tile clip question_Manifold9.png

You might be hindered by using the wrong term. You clip vector data, but crop images.

That isn't quite the whole story.

After cropping, an image (any raster) necessary includes (only) whole rectangles of data. There is no format that includes jagged irregular image data. (That would be points, a vector format of course. I don't know of any sparse raster format available to us GIS mortals but I might be wrong on that.)

However, you can set an irregularly shaped group of pixels within an image to be invalid or transparent, so that only the valid or visible pixels are shown. (With underlying data of any kind showing through instead.)

That is what you need here I think.

Thank you.

This video might be helpful to you.

http://www.mppng.nl/manifold/pointlabeler

This is what I use. I put it together ages ago, from memory drawing upon the video that Sloots references. It could probably be improved but it works so I haven't revisited it.

(I fell into the same trap and put 'clipping' in my original project name )

Attachments:
M9 CLIPPING IMAGES MASKS.mxb

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Thank you!