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

I have always used Hawth's tools (I have 3D Analyst not Spatial Analyst), but with the upgrade the tools disappeared.... Can I still get Hawth's tools to work with 10 or is there a function to clip by polygon that I missed?

I have approx. 100 images that I need to clip to field boundaries (polygon layer).

Thank you.

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You can use a toolbox.

Its in Data Management Tools -> Raster -> Raster Processing -> Clip

In here, you can tell it to clip to an irregularly shaped polygon.

After you specify the shapefile to clip to as your Output Extent, then you also need to ensure that you put a checkmark beside the 'Use Input Features for Clipping Geometry' option.

Is that what you needed?

All comments

You can use a toolbox.

Its in Data Management Tools -> Raster -> Raster Processing -> Clip

In here, you can tell it to clip to an irregularly shaped polygon.

After you specify the shapefile to clip to as your Output Extent, then you also need to ensure that you put a checkmark beside the 'Use Input Features for Clipping Geometry' option.

Is that what you needed?

Perfect. Thank you.

For some reason, I thought that would give me extents and not the polygon boundary.

Hi, you can use Spatial Analyst Tool Extract by Mask or Extract by Polygon.
Tomas

Hi everybody,

The tool Extract By Mask seems to work, however, is there a way to get jpg as the output?
Thank you for your thoughts,

Hi everybody,

The tool Extract By Mask seems to work, however, is there a way to get jpg as the output?
Thank you for your thoughts,

You can specify the output type by changing the extension in the output dataset box to Raster.jpg instead of Raster.tif, Raster.img or whatever it currently is.

Phuksouliyapommated

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

You can use a toolbox.

Its in Data Management Tools -> Raster -> Raster Processing -> Clip

In here, you can tell it to clip to an irregularly shaped polygon.

After you specify the shapefile to clip to as your Output Extent, then you also need to ensure that you put a checkmark beside the 'Use Input Features for Clipping Geometry' option.

Is that what you needed?

Don has the correct workflow. Use the clip under Data Management > Raster > Raster Processing. If you do not specify the input geometry, you will receive the bounding extents of the polygon. The output format of the raster is controlled by adding extensions. So .jpg for jpeg, .tif for tiff and so forth. The only limit is the raster to be output must have the band combination/bit depth for the desired format.

Extract by Mask will also perform the clip, but Spatial Analyst is required.

Is there a way to clip a raster with a polygon but keep the outer portion? (ie, to create a donut?)

Thanks

Is there a way to clip a raster with a polygon but keep the outer portion? (ie, to create a donut?)

Thanks

A maybe not so quick solution...

Convert the polygon to a raster with the same extent of your raster.
But make the areas of the polygon equal to NoData and all other areas outside the polygon equal to 0 or some other valid integer.

Then use those as the input in the extract my mask. The polygon area, which has been set to NoData will 'mask out' these portions on the output raster.

I would be interested to know if there was a tool that could automatically do this (I am thinking a checkmark somewhere...)

The above would fit nicely in a small model or python script so it can be ran over and over again in the future if needed.

Is there a way to clip a raster with a polygon but keep the outer portion? (ie, to create a donut?)

Andrea,

You can use the Mask button on the Image Analysis Window in ArcGIS 10.

Image Analysis window: Processing section

Regards,
Eric

FYI. I am experiencing some strange results as the moment using the Clip tool. See attached ...

Clip Problem.jpg

FYI. I am experiencing some strange results as the moment using the Clip tool...

Can you verify what projection your datasets are in?

Check to see that they are using the same projection and coordinate system before running the clip.
I've had suspect results when trying to do analysis on datasets that are in different projections.

If you are still getting problems try some of the other suggestions like Extract by Mask.

Joe,

Its a bug in the software and I put the tracking number in your other post. Extract by Mask will work, or getting 10.1 Beta will work (the fix is in beta for Clip).

Best Regards,
Eric

Please give some thought to allowing a workflow to allow NOT promoting the raster bit depth even when using the "clip to polygon". Why not leave this under the user's control?

For example, we have some ordinary 8-bit BW historical aerials I want to load to SDE. I need to clip off the areas valued "0" around the edge (areas should have been "nodata") of some of the images, in order to get a better color matching result when mosaicing to SDE. (If I just load them directly to SDE using the "ignore background value" option, it works, but the imagery has bad tonal matching between photos, hence the need for the color balance/matching etc.) Note that NONE of the area to be extracted from the image is currently nodata.

If I clip using a poly and do the geometry clipping, it promotes to 16 bit, which DOUBLES the size on disk (even though NONE is currently nodata, so it should NOT need to do this). Then I'd be trying to mosaic 8 and 16 bit imagery into the same SDE dataset, so it would end up doubling the whole set to 16 bit, taking up 2x the disk space needed.

But if I set the 0 to be no data, then any black areas in the photo also get to be nodata, leaving holes.

So the only workflow I have come up with is to clip the images, then reclassify each one twice (once to set the current nodata value to 255 and the existing 255 to 254, then again to set the 255 to nodata) to force it back to 8 bit. So I waste several hours fighting this.

Why does this have to be so hard? Why can't there be an option similar to the "ignore background color" when doing the clip?

DianeMcConnaughey

ArcGIS 10.0 SP3 XP Extract by mask worked for, if the polygon and raster were in the same projection. It produced a corrupt raster when they were in different projections. (then again, my computer promptly froze up, so maybe something was going on with the network) Clip in Data management worked if they were in the same projection, but the output included the entire extent of the polygon, not just the area of the polygon. It froze up when they were in different projections. So, it seems like things haven't really changed except for the location of the tools.

ZacharyHart_0-1653565251421.png

ArcGIS 10.0 SP3 XP Extract by mask worked for, if the polygon and raster were in the same projection. It produced a corrupt raster when they were in different projections. (then again, my computer promptly froze up, so maybe something was going on with the network) Clip in Data management worked if they were in the same projection, but the output included the entire extent of the polygon, not just the area of the polygon. It froze up when they were in different projections. So, it seems like things haven't really changed except for the location of the tools.

Hi Diane,
If �??use input features for clipping geometry�?� option in the Clip (data management) tool is not checked, then the output clips out the minimum bounding rectangle for that feature. To get exact area of the polygon clip feature check the �??use input features for clipping geometry�?� option.
[ATTACH=CONFIG]12735[/ATTACH]

For the Extract by Mask and the Clip (data management) tool, your input raster and clip feature can have different projections. If you encounter any unexpected behavior, please contact Support Services.

Thanks
Pavan

I have a similar issue.

As per the first image [ATTACH=CONFIG]14112[/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 [ATTACH=CONFIG]14113[/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).

If you are trying to create a 'doughnut' effect then you can achieve the results with the Export Data function and select 'Inside.' This should perform the inverse clip that you are trying to create.

Per the Help,

alternatively, you can check the Clip Inside option to remove the data within the graphic and keep the rest of the data.

I want to do this, but the "selected graphics" button is greyed out [ATTACH=CONFIG]14287[/ATTACH]. But I think this won't work because I am using a shapefile, not graphics I just drew in.

If you are trying to create a 'doughnut' effect then you can achieve the results with the Export Data function and select 'Inside.' This should perform the inverse clip that you are trying to create.

Per the Help,

Right click the layer in the table of contents and then convert it to graphics. Then be sure the graphic is selected and then you can use the Export Data workflow.

Yes, that did it! Thank you so much.

Right click the layer in the table of contents and then convert it to graphics. Then be sure the graphic is selected and then you can use the Export Data workflow.

The "convert to graphics" option doesn't seem to be working for me. The "selected graphics" button is still grayed out, and the polygon layer is selected. Any ideas?

Julia,

Did you select the graphic? It doesn't matter if the polygon layer is selected. You can use the Select Elements button to make selections on graphics.

Eric

Hi Julia,
Let me work step-by-step with you, as I think I know the problem, but it's best to just do the whole thing:

1. Right-click on your polygon layer and use the "Convert Features to Graphics"[ATTACH=CONFIG]14997[/ATTACH]

2. After turning off the polygon layer, your graphics should be still showing. Now, select the graphics (when I say select, use the black arrow which will create a rectangular border around graphic) [ATTACH=CONFIG]14998[/ATTACH]

3. Now, right-click on the Raster | Data | Export Data. Now you should be able to choose "Selected Graphics" AND "Clip Inside". Note that you also want to re-select the Location where you want it saved, as I think there's a bug here (otherwise, for me, it just does nothing at all.) [ATTACH=CONFIG]15000[/ATTACH]

4. Since I cannot figure out how to get rid of the graphics I made earlier, I just choose File | New, then add my newly created layer. Let me know if it works for you.

The "convert to graphics" option doesn't seem to be working for me. The "selected graphics" button is still grayed out, and the polygon layer is selected. Any ideas?

Mark,

To get rid of the graphics you created, just select them and hit the Delete key.

Eric

Thanks, Eric. It always gets me when the simplest thing (then I forget to do it). Okay, it's making me giggle.

Mark,

To get rid of the graphics you created, just select them and hit the Delete key.

Eric

No problem Mark. I just didn't want you to keep having to start blank maps. Is there a reason why you're going through this 'convert to graphics' workflow rather than just hitting the Mask button on the Image Analysis Window? I mentioned this method well before Jeff S. replied to you -technically it was even before you posted the question. Maybe you didn't read the whole thread. You can also Clip with the Image Analysis window - all you need to do for both is select a polygon from your feature class. No conversion to graphics required.

Hi Eric,
Yes, the problem is I simply don't understand how to use that feature. I tried it, but I was not able to do it. When I was shown the 'convert to graphics' thing, it was just so easy, that I didn't even bother with the other one.

No problem Mark. I just didn't want you to keep having to start blank maps. Is there a reason why you're going through this 'convert to graphics' workflow rather than just hitting the Mask button on the Image Analysis Window? I mentioned this method well before Jeff S. replied to you -technically it was even before you posted the question. Maybe you didn't read the whole thread. You can also Clip with the Image Analysis window - all you need to do for both is select a polygon from your feature class. No conversion to graphics required.

You select the raster you want to Clip/Mask in the Image Analysis window (IAW), from the list of rasters. You also select a polygon (feature class polygon), and then just hit the Clip or Mask button in the IAW. The layer is temporary by default.

Thank you Mark and Eric, those steps worked for me! I appreciate your assistance.

ArcGIS support tool to clip raster/DEM or image

here for you Clip raster by polygon in ArcGIS - YouTube

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